JP5387563B2 - ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL, ORGANIC ELECTROLUMINESCENT ELEMENT, METHOD FOR PRODUCING ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE - Google Patents
ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL, ORGANIC ELECTROLUMINESCENT ELEMENT, METHOD FOR PRODUCING ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE Download PDFInfo
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- JP5387563B2 JP5387563B2 JP2010500646A JP2010500646A JP5387563B2 JP 5387563 B2 JP5387563 B2 JP 5387563B2 JP 2010500646 A JP2010500646 A JP 2010500646A JP 2010500646 A JP2010500646 A JP 2010500646A JP 5387563 B2 JP5387563 B2 JP 5387563B2
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- LNKHTYQPVMAJSF-UHFFFAOYSA-N pyranthrene Chemical group C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC3=C(C=CC=C4)C4=CC4=CC=C1C2=C34 LNKHTYQPVMAJSF-UHFFFAOYSA-N 0.000 description 1
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- YRGLXIVYESZPLQ-UHFFFAOYSA-I tantalum pentafluoride Chemical compound F[Ta](F)(F)(F)F YRGLXIVYESZPLQ-UHFFFAOYSA-I 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
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- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
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- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F12/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing heteroatoms
- C08F12/26—Nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/32—Monomers containing only one unsaturated aliphatic radical containing two or more rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/34—Monomers containing two or more unsaturated aliphatic radicals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/141—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
-
- H—ELECTRICITY
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Description
本発明は有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、有機エレクトロルミネッセンス素子の製造方法、照明装置及び表示装置に関する。 The present invention relates to an organic electroluminescence element material, an organic electroluminescence element, a method for producing an organic electroluminescence element, an illumination device, and a display device.
有機エレクトロルミネッセンス素子(以下、有機EL素子ともいう)は、電極と電極の間を厚さわずか0.1μm程度の有機材料の膜で構成する全固体素子であり、且つ、その発光が2V〜20V程度の比較的低い電圧で達成できることから、次世代の平面ディスプレイや照明として期待されている技術である。 An organic electroluminescence element (hereinafter also referred to as an organic EL element) is an all-solid-state element composed of an organic material film having a thickness of only about 0.1 μm between electrodes, and emits light of 2V to 20V. Since it can be achieved at a relatively low voltage, it is a technology expected as a next-generation flat display and illumination.
更に、最近発見されたリン光発光を利用する有機EL素子では、以前の蛍光発光を利用するそれに比べ原理的に約4倍の発光効率が実現可能であることから、その材料開発を初めとし、発光素子の層構成や電極の研究開発が世界中で行われている。 Furthermore, the recently discovered organic EL element using phosphorescence emission can realize a light emission efficiency of about 4 times in principle compared with that using the previous fluorescence emission. Research and development of light-emitting element layer configurations and electrodes are performed all over the world.
また、有機EL素子の構成は、透明電極と対抗電極に有機層が挟まれただけの単純なものであり、平面ディスプレイの代表である液晶ディスプレイに比べ、部品点数が圧倒的に少ないため、製造コストも低く抑えられるはずであるが、現状では必ずしもそうではなく、性能的にもコスト的にも液晶ディスプレイに大きく水をあけられている。特にコストに対しては、生産性の悪さがその要因と考えられる。 In addition, the structure of the organic EL element is a simple one in which an organic layer is sandwiched between a transparent electrode and a counter electrode, and the number of parts is overwhelmingly smaller than that of a liquid crystal display, which is a typical flat display. Although the cost should be kept low, this is not always the case at present, and a large amount of water is drained from the liquid crystal display in terms of performance and cost. In particular, in terms of cost, poor productivity is considered as a factor.
現在商品化されている有機ELの殆どが、低分子材料を蒸着して成膜する、いわゆる蒸着法で製造されている。この蒸着法は精製が容易な低分子化合物を有機EL材料を用いることができる(高純度材料が得やすい)こと、更に積層構造を作るのが容易なことから、効率、寿命という面で非常に優れているが、反面、10−4Pa以下という高真空条件下で蒸着を行うため、成膜する装置に制約が加わり、実際には小さい面積の基板にしか適用できず、さらに複数層積層するとなると成膜に時間がかかりスループットが低いことが欠点である。Most of organic EL currently commercialized are manufactured by a so-called vapor deposition method in which a low molecular material is vapor deposited to form a film. In this vapor deposition method, an organic EL material can be used as a low-molecular compound that can be easily purified (a high-purity material can be easily obtained), and a laminated structure can be easily formed. Although it is excellent, on the other hand, since vapor deposition is performed under a high vacuum condition of 10 −4 Pa or less, restrictions are imposed on the film forming apparatus, and in practice it can be applied only to a substrate with a small area, and when a plurality of layers are laminated In this case, the film formation takes time and the throughput is low.
特に照明用途や大面積の電子ディスプレイに適用する場合は問題となり、有機ELがそのようなアプリケーションに実用されていないひとつの原因となっている。 In particular, it becomes a problem when applied to lighting applications and large-area electronic displays, and organic EL is one cause that is not practically used in such applications.
一方、有機化合物層をスピンコート、インクジェット、印刷、スプレーといったプロセスで製造する塗布法は、常圧で薄膜を作製することできさらに大面積に均一な膜を作製するのに適している。 On the other hand, a coating method in which an organic compound layer is manufactured by processes such as spin coating, ink jet, printing, and spraying can be used to produce a thin film at normal pressure and to produce a uniform film over a large area.
塗布法は必要な材料(高分子材料および/または低分子材料)を溶液または分散液として調製して薄膜塗布するため、複数の有機材料を精密に混合できる(例えば、発光ホスト材料に対するドーパント等の調整がしやすい等)ことから、素子を大面積化しても発光ムラができにくいという特徴があり、製造コストの面でも非常に有利である。 In the coating method, a necessary material (polymer material and / or low molecular weight material) is prepared as a solution or dispersion and applied in a thin film, so that a plurality of organic materials can be mixed precisely (for example, dopant for a light emitting host material, etc. For example, it is easy to make adjustments, so that even if the element is enlarged, there is a feature that unevenness in light emission is difficult to occur, which is very advantageous in terms of manufacturing cost.
塗布法に用いられる材料としては大きく高分子系と低分子系があるが、一般的に高分子系材料は精製が難しく、特に有機エレクトロルミネッセンス素子はごくわずかな不純物が素子の発光寿命における大きな低下をまねくため、適用が難しい。 Materials used for coating methods are large and low molecular, but in general, high molecular materials are difficult to purify, especially organic electroluminescence devices, which have very small impurities that greatly reduce the light emission life of the device. This is difficult to apply.
正孔輸送層に使用できる、従来公知の低分子系の正孔輸送材料が開示(例えば、特許文献1参照。)されているものがあるが、これらの材料を用い塗布法にて正孔輸送層を形成し素子性能を評価検討したところ、蒸着によって作製された素子に比較して、稼働電圧の上昇などがあり、更には、上層を塗布法で成膜する場合下層である正孔輸送層が流され、積層できないといった問題があり、そのような問題に対して、例えば、重合性官能基を3つ以上または1つ有するトリアリールアミン誘導体を用いる技術が開示されている(例えば、特許文献2及び特許文献3参照。)。 Conventionally known low molecular weight hole transport materials that can be used for the hole transport layer have been disclosed (for example, see Patent Document 1). When a device was formed and the device performance was evaluated, there was an increase in operating voltage compared to a device produced by vapor deposition. Furthermore, when the upper layer was formed by a coating method, the hole transport layer as the lower layer For example, a technique using a triarylamine derivative having three or more polymerizable functional groups is disclosed (for example, Patent Documents). 2 and Patent Document 3).
しかしながら、本発明者らが詳細に検討したところ、重合性官能基の数が多いと、光や熱で架橋する際のエネルギーが大きくなり、重合性官能基が架橋に関与せずに残存する傾向が高くなり、残存する重合性官能基は活性が高いために素子寿命を劣化させる一因となる。 However, when the present inventors examined in detail, when the number of polymerizable functional groups is large, the energy at the time of crosslinking by light or heat increases, and the polymerizable functional groups tend to remain without participating in crosslinking. And the remaining polymerizable functional group has a high activity, which contributes to deterioration of the device life.
一方で重合性官能基の数が少ないと、膜内での化合物同士の架橋密度が小さくなるために、耐溶剤性が劣り上層を積層できないという問題があり、改善が求められている。
従来の有機EL素子材料に比べてより短時間、低温で十分に架橋し、紫外光や熱によるダメージが少なく耐溶剤性の非常に高く、表面平滑性の高い正孔輸送層を提供し、且つ、本発明の有機EL素子材料を用いて高性能(外部取り出し量子効率が高く、長寿命)の有機EL素子を提供する。 Provided a hole transport layer that is sufficiently crosslinked at a low temperature for a shorter time than conventional organic EL element materials, has little damage due to ultraviolet light and heat, has very high solvent resistance, and high surface smoothness, and An organic EL device having high performance (high external extraction quantum efficiency and long life) using the organic EL device material of the present invention is provided.
本発明の上記目的は下記の構成1〜23により達成され、具体的に、本発明によれば、構成1において、下記一般式(X)で表される化合物を除く有機エレクトロルミネッセンス素子材料が提供される。
1.下記一般式(1)で表される重合性化合物または該重合性化合物から導かれる構造単位を有する高分子化合物を含有することを特徴とする有機エレクトロルミネッセンス素子材料。 1. An organic electroluminescent element material comprising a polymerizable compound represented by the following general formula (1) or a polymer compound having a structural unit derived from the polymerizable compound.
〔式中、Ar1、Ar2は、各々無置換のベンゼン環または無置換のナフタレン環を表し、X1、X2、X3、X4は、各々水素原子または一般式(a−1)〜(a−3)のいずれかで表される重合性官能基を表す。但し、X1、X2の一方及びX3、X4の一方は各々水素原子を表す。〕[Wherein, Ar 1 and Ar 2 each represent an unsubstituted benzene ring or an unsubstituted naphthalene ring, and X 1 , X 2 , X 3 and X 4 each represent a hydrogen atom or a general formula (a-1) A polymerizable functional group represented by any one of (a-3). However, one of X 1 and X 2 and one of X 3 and X 4 each represents a hydrogen atom. ]
〔式中、Rは水素原子またはメチル基を表し、Qは単結合または下記一般式(b)で表される連結基のいずれか、もしくは複数の組み合わせで表される2価の連結基を表し、Q’は下記一般式(b)で表される連結基のいずれか、もしくは複数の組み合わせで表される2価の連結基を表す。〕 [In the formula, R represents a hydrogen atom or a methyl group, and Q represents a single bond, a linking group represented by the following general formula (b), or a divalent linking group represented by a plurality of combinations. , Q ′ represents any one of the linking groups represented by the following general formula (b) or a divalent linking group represented by a plurality of combinations. ]
〔式中、nは1以上の整数を表す。〕
2.前記一般式(1)で表される重合性化合物または該重合性化合物から導かれる構造単位を有する高分子化合物が正孔輸送層形成材料であることを特徴とする前記1に記載の有機エレクトロルミネッセンス素子材料。[Wherein n represents an integer of 1 or more. ]
2. 2. The organic electroluminescence according to 1 above, wherein the polymerizable compound represented by the general formula (1) or a polymer compound having a structural unit derived from the polymerizable compound is a hole transport layer forming material. Element material.
3.前記一般式(1)で表される重合性化合物または該重合性化合物から導かれる構造単位を有する高分子化合物が下記一般式(2)〜(5)のいずれかで表されることを特徴とする前記1または2に記載の有機エレクトロルミネッセンス素子材料。 3. The polymerizable compound represented by the general formula (1) or the polymer compound having a structural unit derived from the polymerizable compound is represented by any one of the following general formulas (2) to (5). 3. The organic electroluminescent element material according to 1 or 2 above.
〔式中、Ar1、Ar2は、各々無置換のベンゼン環または無置換のナフタレン環を表し、X5は一般式(a−1)〜(a−3)のいずれかで表される重合性官能基を表す。〕
4.前記一般式(1)のX1、X2のいずれか一方、X3、X4のいずれか一方及び前記一般式(2)〜(5)のX5が一般式(a−1)で表されることを特徴とする前記1〜3のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。[In the formula, Ar 1 and Ar 2 each represent an unsubstituted benzene ring or an unsubstituted naphthalene ring, and X 5 represents a polymerization represented by any one of the general formulas (a-1) to (a-3) Represents a functional group. ]
4). Table with either one of X 1, X 2, X 3 , one and the general formula X 4 (2) ~ X 5 is the general formula (5) (a-1) of the general formula (1) The organic electroluminescent element material according to any one of the above items 1 to 3, wherein
5.前記一般式(a−1)のQが単結合であることを特徴とする前記1〜4のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。 5. Q of said general formula (a-1) is a single bond, The organic electroluminescent element material of any one of said 1-4 characterized by the above-mentioned.
6.前記一般式(1)〜(5)のいずれかで表される化合物のAr1、Ar2が各々無置換のベンゼン環であることを特徴とする前記1〜5のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。6). 6. The compound according to any one of 1 to 5 above, wherein Ar 1 and Ar 2 of the compound represented by any one of the general formulas (1) to (5) are each an unsubstituted benzene ring. Organic electroluminescence element material.
7.前記一般式(1)で表される重合性化合物が、化合物1または化合物3であることを特徴とする前記1〜6のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。 7). 7. The organic electroluminescence element material according to any one of 1 to 6, wherein the polymerizable compound represented by the general formula (1) is Compound 1 or Compound 3.
8.構成材料としてリン光発光性化合物を含有する有機エレクトロルミネッセンス素子に用いられることを特徴とする前記1〜7のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。 8). 8. The organic electroluminescent element material according to any one of 1 to 7 above, which is used for an organic electroluminescent element containing a phosphorescent compound as a constituent material.
9.陽極と陰極の間に、発光層と正孔輸送層を含む複数の有機化合物層を有する有機エレクトロルミネッセンス素子において、
該正孔輸送層の少なくとも1層が、前記1〜8のいずれか1項に記載の有機エレクトロルミネッセンス素子材料を含有することを特徴とする有機エレクトロルミネッセンス素子。9. In an organic electroluminescence device having a plurality of organic compound layers including a light emitting layer and a hole transport layer between an anode and a cathode,
At least 1 layer of this positive hole transport layer contains the organic electroluminescent element material of any one of said 1-8, The organic electroluminescent element characterized by the above-mentioned.
10.前記発光層の少なくとも1層がリン光発光性化合物を含有することを特徴とする前記9に記載の有機エレクトロルミネッセンス素子。 10. 10. The organic electroluminescence device as described in 9 above, wherein at least one of the light emitting layers contains a phosphorescent compound.
11.前記リン光発光性化合物の少なくとも1つが下記一般式(6)で表される化合物であることを特徴とする前記10に記載の有機エレクトロルミネッセンス素子。 11. 11. The organic electroluminescence device as described in 10 above, wherein at least one of the phosphorescent compounds is a compound represented by the following general formula (6).
〔式中、P及びQは炭素原子または窒素原子を表し、A1はP−Cと共に芳香族炭化水素環または芳香族複素環を形成する原子群を表す。A2はQ−Nと共に芳香族炭化水素環または芳香族複素環を形成する原子群を表す。P1−L1−P2は2座の配位子を表し、P1、P2は各々独立に炭素原子、窒素原子または酸素原子を表す。L1はP1、P2と共に2座の配位子を形成する原子群を表す。j1は1〜3の整数を表し、j2は0〜2の整数を表すが、j1+j2は2または3である。M1は元素周期表における8〜10族の金属元素を表す。〕
12.前記一般式(6)で表される化合物が、下記一般式(7)で表される化合物であることを特徴とする前記11に記載の有機エレクトロルミネッセンス素子。[In formula, P and Q represent a carbon atom or a nitrogen atom, and A1 represents the atomic group which forms an aromatic-hydrocarbon ring or an aromatic heterocyclic ring with PC. A2 represents an atomic group that forms an aromatic hydrocarbon ring or an aromatic heterocyclic ring together with QN. P1-L1-P2 represents a bidentate ligand, and P1 and P2 each independently represent a carbon atom, a nitrogen atom, or an oxygen atom. L1 represents an atomic group that forms a bidentate ligand together with P1 and P2. j1 represents an integer of 1 to 3, j2 represents an integer of 0 to 2, and j1 + j2 is 2 or 3. M1 represents a group 8-10 metal element in the periodic table. ]
12 12. The organic electroluminescence device as described in 11 above, wherein the compound represented by the general formula (6) is a compound represented by the following general formula (7).
〔式中、Zは炭化水素環基、芳香族複素環基または複素環基を表す。P及びQは炭素原子または窒素原子を表し、A1はP−Cと共に芳香族炭化水素環または芳香族複素環を形成する原子群を表す。A3は−C(R01)=C(R02)−、−N=C(R02)−、−C(R01)=N−または−N=N−を表し、R01及びR02は水素原子または置換基を表す。P1−L1−P2は2座の配位子を表し、P1、P2は各々独立に炭素原子、窒素原子または酸素原子を表す。L1はP1、P2と共に2座の配位子を形成する原子群を表す。j1は1〜3の整数を表し、j2は0〜2の整数を表すが、j1+j2は2または3である。M1は元素周期表における8〜10族の金属元素を表す。〕
13.前記リン光発光性化合物がイリジウム錯体であることを特徴とする前記9〜12のいずれか1項に記載の有機エレクトロルミネッセンス素子。[Wherein, Z represents a hydrocarbon ring group, an aromatic heterocyclic group or a heterocyclic group. P and Q represent a carbon atom or a nitrogen atom, and A1 represents an atomic group that forms an aromatic hydrocarbon ring or an aromatic heterocycle together with PC. A3 represents -C ( R01 ) = C ( R02 )-, -N = C ( R02 )-, -C ( R01 ) = N- or -N = N-, and R01 and R02 represent Represents a hydrogen atom or a substituent. P 1 -L 1 -P 2 represents a bidentate ligand, and P 1 and P 2 each independently represent a carbon atom, a nitrogen atom or an oxygen atom. L 1 represents an atomic group that forms a bidentate ligand with P 1 and P 2 . j1 represents an integer of 1 to 3, j2 represents an integer of 0 to 2, and j1 + j2 is 2 or 3. M 1 represents a group 8-10 metal element in the periodic table. ]
13. 13. The organic electroluminescence device according to any one of 9 to 12, wherein the phosphorescent compound is an iridium complex.
14.白色に発光することを特徴とする前記9〜13のいずれか1項に記載の有機エレクトロルミネッセンス素子。 14 14. The organic electroluminescent element according to any one of 9 to 13, which emits white light.
15.構成層として、正孔輸送層及び発光層を有し、該正孔輸送層が湿式法(ウェットプロセス)により成膜、形成される工程を経て製造されたことを特徴とする前記9〜14のいずれか1項に記載の有機エレクトロルミネッセンス素子。 15. The above 9 to 14, wherein the constituent layer has a hole transport layer and a light emitting layer, and the hole transport layer is produced through a process of forming and forming a film by a wet method (wet process). The organic electroluminescent element of any one of Claims.
16.前記発光層が湿式法(ウェットプロセス)により成膜、形成される工程を経て製造されたことを特徴とする前記15に記載の有機エレクトロルミネッセンス素子。 16. 16. The organic electroluminescence device as described in 15 above, wherein the light emitting layer is manufactured through a process in which a film is formed and formed by a wet method (wet process).
17.前記正孔輸送層が、前記一般式(1)で表される重合性化合物を湿式法(ウェットプロセス)にて成膜した後、熱または光の付与により該重合性化合物が重合して形成される工程を経て製造されたことを特徴とする前記15または16に記載の有機エレクトロルミネッセンス素子。 17. The hole transport layer is formed by polymerizing the polymerizable compound represented by the general formula (1) by a wet method (wet process) and then polymerizing the polymerizable compound by applying heat or light. The organic electroluminescence device as described in 15 or 16, wherein the organic electroluminescence device is manufactured through a process.
18.前記9〜17のいずれか1項に記載の有機エレクトロルミネッセンス素子を製造するにあたり、正孔輸送層が湿式法(ウェットプロセス)により成膜、形成される工程を有することを特徴とする有機エレクトロルミネッセンス素子の製造方法。 18. 18. When manufacturing the organic electroluminescent element of any one of said 9-17, it has a process by which a positive hole transport layer is formed into a film and formed by a wet method (wet process), The organic electroluminescent characterized by the above-mentioned. Device manufacturing method.
19.前記9〜17のいずれか1項に記載の有機エレクトロルミネッセンス素子を製造するにあたり、正孔輸送層及び発光層が湿式法(ウェットプロセス)により成膜、形成される工程を有することを特徴とする有機エレクトロルミネッセンス素子の製造方法。 19. When manufacturing the organic electroluminescent element of any one of said 9-17, it has the process in which a positive hole transport layer and a light emitting layer are formed into a film and formed by a wet method (wet process), It is characterized by the above-mentioned. Manufacturing method of organic electroluminescent element.
20.前記正孔輸送層が、前記1〜8のいずれか1項に記載の有機エレクトロルミネッセンス素子材料を湿式法(ウェットプロセス)にて成膜した後、熱または光の付与により前記一般式(1)で表される重合性化合物が重合して形成されることを特徴とする前記18または19に記載の有機エレクトロルミネッセンス素子の製造方法。 20. The hole transport layer is formed by depositing the organic electroluminescent element material according to any one of 1 to 8 above by a wet method (wet process), and then applying the general formula (1) by applying heat or light. 20. The method for producing an organic electroluminescence device as described in 18 or 19 above, wherein the polymerizable compound represented by the formula is polymerized.
21.前記9〜17のいずれか1項に記載の有機エレクトロルミネッセンス素子を備えたことを特徴とする照明装置。 21. 18. An illumination device comprising the organic electroluminescence element according to any one of 9 to 17 above.
22.前記9〜17のいずれか1項に記載の有機エレクトロルミネッセンス素子を有することを特徴とする表示装置。 22. 18. A display device comprising the organic electroluminescence element according to any one of 9 to 17 above.
23.前記1〜8のいずれか1項に記載の一般式(1)で表される重合性化合物または該重合性化合物から導かれる構造単位を有することを特徴とする高分子化合物。 23. The polymeric compound characterized by having the polymeric compound represented by General formula (1) of any one of said 1-8, or the structural unit induced | guided | derived from this polymeric compound.
本発明の有機EL素子材料は、より短時間、低温で十分に架橋するため、紫外光や熱によるダメージが少なく耐溶剤性の非常に高い有機化合物層を形成でき、且つ、形成された有機化合物層は非常に高い表面平滑性を有することが判った。また、本発明の有機EL素子材料を用いることにより塗布法によって積層することが可能となるため、コストパフォーマンスが高く、且つ、高性能(外部取り出し量子効率が高く、長寿命)の有機EL素子を提供することができた。 Since the organic EL device material of the present invention is sufficiently crosslinked at a low temperature for a shorter time, an organic compound layer having a very high solvent resistance with little damage caused by ultraviolet light or heat can be formed. The layer was found to have very high surface smoothness. Moreover, since it becomes possible to laminate | stack by the apply | coating method by using the organic EL element material of this invention, cost performance is high, and the organic EL element of high performance (external extraction quantum efficiency is high and long life) is obtained. Could be provided.
1 ディスプレイ
3 画素
5 走査線
6 データ線
7 電源ライン
10 有機EL素子
11 スイッチングトランジスタ
12 駆動トランジスタ
13 コンデンサ
A 表示部
B 制御部
101 ガラス基板
102 ITO透明電極
103 隔壁
104 正孔注入層
105B、105G、105R 発光層
207 透明電極付きガラス基板
206 有機EL層
205 陰極
202 ガラスカバー
208 窒素ガス
209 捕水剤DESCRIPTION OF SYMBOLS 1 Display 3 Pixel 5 Scan line 6 Data line 7 Power supply line 10 Organic EL element 11 Switching transistor 12 Drive transistor 13 Capacitor A Display part B Control part 101 Glass substrate 102 ITO transparent electrode 103 Partition 104 104 Hole injection layer 105B, 105G, 105R Luminescent layer 207 Glass substrate with transparent electrode 206 Organic EL layer 205 Cathode 202 Glass cover 208 Nitrogen gas 209 Water catching agent
本発明の有機EL素子材料においては、請求の範囲1〜6のいずれか1項に記載の有機エレクトロルミネッセンス素子材料を分子設計することにより、短時間、低温で十分に架橋し、紫外光や熱によるダメージの少ない薄膜形成可能な有機EL素子材料を得ることができた。 In the organic EL element material of the present invention, the organic electroluminescence element material according to any one of claims 1 to 6 is sufficiently designed to be crosslinked at a low temperature for a short time by ultraviolet light or heat. It was possible to obtain an organic EL element material capable of forming a thin film with little damage due to.
また、本発明の有機EL素子材料を用いると外部取り出し量子効率が高く、発光寿命の長い有機EL素子の製造方法を提供することができた。 Moreover, when the organic EL element material of the present invention was used, a method for producing an organic EL element having a high external extraction quantum efficiency and a long emission lifetime could be provided.
併せて、該製造方法により製造された有機EL素子、該素子を具備した表示装置及び照明装置を提供することができた。 In addition, it was possible to provide an organic EL element manufactured by the manufacturing method, a display device including the element, and a lighting device.
以下、本発明に係る各構成要素の詳細について、順次説明する。 Hereinafter, details of each component according to the present invention will be sequentially described.
《一般式(1)で表される重合性化合物、該化合物から導出される高分子化合物》
本発明の有機EL素子材料に係る一般式(1)で表される重合性化合物または該化合物から導出される高分子化合物について説明する。尚、本発明の一般式(1)で表される重合性化合物に、熱または紫外線等を印加することにより、前記重合性化合物から導かれる高分子化合物を生成することができる。<< Polymerizable compound represented by general formula (1), polymer compound derived from the compound >>
The polymerizable compound represented by the general formula (1) relating to the organic EL device material of the present invention or a polymer compound derived from the compound will be described. In addition, the polymeric compound guide | induced from the said polymeric compound can be produced | generated by applying a heat | fever or an ultraviolet-ray etc. to the polymeric compound represented by General formula (1) of this invention.
一般式(1)において、Ar1、Ar2は、各々無置換のベンゼン環または無置換のナフタレン環を表し、X1、X2、X3、X4は、各々水素原子または一般式(a−1)〜(a−3)のいずれかで表される重合性官能基を表す。但し、X1、X2の一方及びX3、X4の一方は各々水素原子を表す。In the general formula (1), Ar 1 and Ar 2 each represent an unsubstituted benzene ring or an unsubstituted naphthalene ring, and X 1 , X 2 , X 3 , and X 4 each represent a hydrogen atom or the general formula (a -1) It represents a polymerizable functional group represented by any one of (a-3). However, one of X 1 and X 2 and one of X 3 and X 4 each represents a hydrogen atom.
また、一般式(1)の一般式(a−1)〜(a−3)のいずれかで表される重合性官能基において、Rは水素原子またはメチル基を表し、Qは単結合または下記一般式(b)で表される連結基のいずれか、もしくは複数の組み合わせで表される2価の連結基を表し、Q’は下記一般式(b)で表される連結基のいずれか、もしくは複数の組み合わせで表される2価の連結基を表す。 In the polymerizable functional group represented by any one of the general formulas (a-1) to (a-3) in the general formula (1), R represents a hydrogen atom or a methyl group, and Q represents a single bond or Any one of the linking groups represented by the general formula (b) or a divalent linking group represented by a plurality of combinations, Q ′ is any of the linking groups represented by the following general formula (b), Alternatively, it represents a divalent linking group represented by a plurality of combinations.
更に、一般式(1)に係る一般式(b)で表される連結基において、nは1以上の整数を表す。 Furthermore, in the linking group represented by the general formula (b) according to the general formula (1), n represents an integer of 1 or more.
本発明の有機EL素子材料に係る、一般式(1)で表される重合性化合物または該化合物から導かれる構造単位を有する高分子化合物は、本発明の有機EL素子の構成層、有機化合物層に用いることができるが、特に正孔輸送層の形成用材料として好ましい。 The polymerizable compound represented by the general formula (1) or the polymer compound having a structural unit derived from the compound according to the organic EL element material of the present invention is a constituent layer or an organic compound layer of the organic EL element of the present invention. However, it is particularly preferable as a material for forming a hole transport layer.
尚、本発明の有機EL素子の構成層、有機化合物層については後に詳細に説明する。 The constituent layers and organic compound layers of the organic EL device of the present invention will be described in detail later.
《一般式(2)〜(5)のいずれかで表される重合性化合物》
上記の一般式(1)で表される重合性化合物または該化合物から導かれる高分子化合物の中でも、好ましく用いられるのは、上記一般式(2)〜(5)のいずれかで表される重合性化合物または該化合物から導かれる高分子化合物である。<< Polymerizable compound represented by any one of formulas (2) to (5) >>
Among the polymerizable compound represented by the general formula (1) or the polymer compound derived from the compound, a polymer represented by any one of the general formulas (2) to (5) is preferably used. Or a high molecular compound derived from the compound.
一般式(2)〜(5)のいずれかで表される各々の重合性化合物または該重合性化合物から導かれる高分子化合物において、X5で表される一般式(a−1)〜(a−3)のいずれかで表される重合性官能基は、一般式(1)における一般式(a−1)〜(a−3)のいずれかで表される重合性官能基と同義である。In each polymerizable compound represented by any one of the general formulas (2) to (5) or a polymer compound derived from the polymerizable compound, the general formulas (a-1) to (a) represented by X 5 -3) is the same as the polymerizable functional group represented by any one of the general formulas (a-1) to (a-3) in the general formula (1). .
また、一般式(1)〜(5)のいずれかで表される重合性化合物において、X5で表される重合性官能基としては、一般式(a−1)で表される重合性官能基が好ましく、更に一般式(a−1)で表される重合性官能基において、Qが単結合であることが好ましい。更に、一般式(1)〜(5)のいずれかで表される重合性化合物において、Ar1、Ar2が各々無置換のベンゼン環であることが好ましい。Further, the polymerizable compound represented by any of formulas (1) to (5), the polymerizable functional group represented by X 5, polymerizable functional represented by the general formula (a-1) In the polymerizable functional group represented by formula (a-1), Q is preferably a single bond. Furthermore, in the polymerizable compound represented by any one of the general formulas (1) to (5), Ar 1 and Ar 2 are each preferably an unsubstituted benzene ring.
本発明に係る一般式(1)〜(5)のいずれかで表される重合性化合物の中でも、特に好ましく用いられるのは、下記の化合物例1、化合物例2である。尚、化合物例1、化合物例2については、後述する、重合性化合物の具体例のところで記載する。 Among the polymerizable compounds represented by any one of the general formulas (1) to (5) according to the present invention, the following Compound Example 1 and Compound Example 2 are particularly preferably used. In addition, about the compound example 1 and the compound example 2, it describes in the place of the specific example of a polymeric compound mentioned later.
以下、一般式(1)〜(5)のいずれかで表される重合性化合物の具体例を示すが、本発明はこれらに限定されない。 Hereinafter, although the specific example of the polymeric compound represented by either of General formula (1)-(5) is shown, this invention is not limited to these.
《有機EL素子の構成層、有機化合物層》
本発明の有機EL素子の構成層、有機化合物層等について説明する。本発明の有機EL素子の層構成の好ましい具体例を以下に示すが、本発明はこれらに限定されない。<< Constitutional layer of organic EL element, organic compound layer >>
The constituent layers and organic compound layers of the organic EL device of the present invention will be described. Although the preferable specific example of the layer structure of the organic EL element of this invention is shown below, this invention is not limited to these.
(i)陽極/正孔輸送層/発光層/電子輸送層/陰極
(ii)陽極/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極
(iii)陽極/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極バッファー層/陰極
(iv)陽極/陽極バッファー層/正孔輸送層/発光層/正孔阻止層/電子輸送層/陰極バッファー層/陰極
《有機化合物層(有機層ともいう)》
本発明に係る有機化合物層について説明する。(I) Anode / hole transport layer / light emitting layer / electron transport layer / cathode (ii) Anode / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode (iii) Anode / hole transport layer / Light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode (iv) anode / anode buffer layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode << Organic compound layer (also called organic layer) >>
The organic compound layer according to the present invention will be described.
本発明の有機EL素子は、構成層として複数の有機化合物層を有することが好ましく、該有機化合物層としては、例えば、上記の層構成の中で、正孔輸送層、発光層、正孔阻止層、電子輸送層等が挙げられるが、その他、正孔注入層、電子注入層等、有機EL素子の構成層に含有される有機化合物が含有されていれば、本発明に係る有機化合物層として定義される。 The organic EL device of the present invention preferably has a plurality of organic compound layers as a constituent layer, and examples of the organic compound layer include a hole transport layer, a light emitting layer, and a hole blocking layer in the above-described layer configuration. As the organic compound layer according to the present invention, an organic compound contained in a constituent layer of the organic EL element, such as a hole injection layer or an electron injection layer, is included. Defined.
更に、陽極バッファー層、陰極バッファー層等に有機化合物が用いられる場合には、陽極バッファー層、陰極バッファー層等も、各々有機化合物層を形成していることになる。 Further, when an organic compound is used for the anode buffer layer, the cathode buffer layer, and the like, the anode buffer layer, the cathode buffer layer, and the like each form an organic compound layer.
尚、前記有機化合物層には、『有機EL素子の構成層に使用可能な有機EL素子材料』等を含有する層も含まれる。 The organic compound layer includes a layer containing “organic EL element material that can be used for a constituent layer of an organic EL element” or the like.
本発明の有機EL素子においては、青色発光層の発光極大波長は430nm〜480nmにあるものが好ましく、緑色発光層は発光極大波長が510nm〜550nm、赤色発光層は発光極大波長が600nm〜640nmの範囲にある単色発光層であることが好ましく、これらを用いた表示装置であることが好ましい。 In the organic EL device of the present invention, the light emitting maximum wavelength of the blue light emitting layer is preferably 430 nm to 480 nm, the green light emitting layer has a light emitting maximum wavelength of 510 nm to 550 nm, and the red light emitting layer has a light emitting maximum wavelength of 600 nm to 640 nm. A monochromatic light emitting layer in the range is preferable, and a display device using these is preferable.
また、これらの少なくとも3層の発光層を積層して白色発光層としたものであってもよい。更に、発光層間には非発光性の中間層を有していてもよい。 Alternatively, a white light emitting layer may be formed by laminating at least three light emitting layers. Further, a non-light emitting intermediate layer may be provided between the light emitting layers.
本発明の有機EL素子としては白色発光層であることが好ましく、これらを用いた照明装置であることが好ましい。 The organic EL element of the present invention is preferably a white light emitting layer, and is preferably a lighting device using these.
本発明の有機EL素子を構成する各層について説明する。 Each layer which comprises the organic EL element of this invention is demonstrated.
《発光層》
本発明に係る発光層は、電極または電子輸送層、正孔輸送層から注入されてくる電子及び正孔が再結合して発光する層であり、発光する部分は発光層の層内であっても発光層と隣接層との界面であってもよい。<Light emitting layer>
The light emitting layer according to the present invention is a layer that emits light by recombination of electrons and holes injected from the electrode, the electron transport layer, or the hole transport layer, and the light emitting portion is in the layer of the light emitting layer. May be the interface between the light emitting layer and the adjacent layer.
発光層の膜厚の総和は特に制限はないが、膜の均質性や、発光時に不必要な高電圧を印加するのを防止し、且つ、駆動電流に対する発光色の安定性向上の観点から、2nm〜5μmの範囲に調整することが好ましく、さらに好ましくは2nm〜200nmの範囲に調整され、特に好ましくは、10nm〜20nmの範囲である。 The total thickness of the light emitting layer is not particularly limited, but from the viewpoint of improving the uniformity of the film, preventing unnecessary application of a high voltage during light emission, and improving the stability of the emission color with respect to the drive current. It is preferable to adjust in the range of 2 nm to 5 μm, more preferably in the range of 2 nm to 200 nm, and particularly preferably in the range of 10 nm to 20 nm.
発光層の作製には、後述する発光ドーパントやホスト化合物を、例えば、真空蒸着法、スピンコート法、キャスト法、LB法、インクジェット法等の公知の薄膜化法により成膜して形成することができる。 For the production of the light-emitting layer, a light-emitting dopant or a host compound, which will be described later, is formed by a known thinning method such as a vacuum deposition method, a spin coating method, a casting method, an LB method, or an ink-jet method. it can.
本発明の有機EL素子の発光層には、発光ホスト化合物と、発光ドーパント(リン光発光性ドーパント(リン光発光性ドーパントともいう)や蛍光ドーパント等)の少なくとも1種類とを含有することが好ましい。 The light emitting layer of the organic EL device of the present invention preferably contains a light emitting host compound and at least one kind of light emitting dopant (phosphorescent dopant (also referred to as phosphorescent dopant) or fluorescent dopant). .
(ホスト化合物(発光ホスト等ともいう))
本発明に用いられるホスト化合物について説明する。(Host compound (also called luminescent host))
The host compound used in the present invention will be described.
ここで、本発明においてホスト化合物とは、発光層に含有される化合物の内でその層中での質量比が20%以上であり、且つ、室温(25℃)においてリン光発光のリン光量子収率が、0.1未満の化合物と定義される。好ましくはリン光量子収率が0.01未満である。また、発光層に含有される化合物の中で、その層中での質量比が20%以上であることが好ましい。 Here, in the present invention, the host compound means a phosphorescent quantum yield of phosphorescence emission at a room temperature (25 ° C.) having a mass ratio of 20% or more in the compound contained in the light emitting layer. A rate is defined as a compound of less than 0.1. The phosphorescence quantum yield is preferably less than 0.01. Moreover, it is preferable that the mass ratio in the layer is 20% or more among the compounds contained in a light emitting layer.
本発明では、上記のカルバゾール環を部分構造として有する化合物、重合性基を有し、且つ、カルバゾール環を部分構造として有する化合物、該化合物の重合体が、ホスト化合物として特に好ましく用いられる。 In the present invention, the compound having the carbazole ring as a partial structure, the compound having a polymerizable group and having the carbazole ring as a partial structure, and a polymer of the compound are particularly preferably used as the host compound.
尚、ホスト化合物としては、公知のホスト化合物を併用で用いてもよく、または複数種併用して用いてもよい。ホスト化合物を複数種用いることで、電荷の移動を調整することが可能であり、有機EL素子を高効率化することができる。また、後述する発光ドーパントを複数種用いることで、異なる発光を混ぜることが可能となり、これにより任意の発光色を得ることができる。 In addition, as a host compound, a well-known host compound may be used together, and may be used in combination of multiple types. By using a plurality of types of host compounds, it is possible to adjust the movement of charges, and the organic EL element can be made highly efficient. Moreover, it becomes possible to mix different light emission by using multiple types of light emission dopants mentioned later, and, thereby, arbitrary luminescent colors can be obtained.
併用してもよい従来公知のホスト化合物としては、正孔輸送能、電子輸送能を有しつつ、且つ、発光の長波長化を防ぎ、なお且つ高Tg(ガラス転移温度)である化合物が好ましい。 A conventionally known host compound that may be used in combination is preferably a compound that has a hole transporting ability and an electron transporting ability, prevents the emission of light from becoming longer, and has a high Tg (glass transition temperature). .
従来公知のホスト化合物の具体例としては、以下の文献に記載されている化合物等が挙げられる。 Specific examples of conventionally known host compounds include compounds described in the following documents.
特開2001−257076号公報、同2002−308855号公報、同2001−313179号公報、同2002−319491号公報、同2001−357977号公報、同2002−334786号公報、同2002−8860号公報、同2002−334787号公報、同2002−15871号公報、同2002−334788号公報、同2002−43056号公報、同2002−334789号公報、同2002−75645号公報、同2002−338579号公報、同2002−105445号公報、同2002−343568号公報、同2002−141173号公報、同2002−352957号公報、同2002−203683号公報、同2002−363227号公報、同2002−231453号公報、同2003−3165号公報、同2002−234888号公報、同2003−27048号公報、同2002−255934号公報、同2002−260861号公報、同2002−280183号公報、同2002−299060号公報、同2002−302516号公報、同2002−305083号公報、同2002−305084号公報、同2002−308837号公報等。 JP-A-2001-257076, 2002-308855, 2001-313179, 2002-319491, 2001-357777, 2002-334786, 2002-8860, 2002-334787, 2002-15871, 2002-334788, 2002-43056, 2002-334789, 2002-75645, 2002-338579, 2002-105445 gazette, 2002-343568 gazette, 2002-141173 gazette, 2002-352957 gazette, 2002-203683 gazette, 2002-363227 gazette, 2002-231453 gazette, No. 003-3165, No. 2002-234888, No. 2003-27048, No. 2002-255934, No. 2002-286061, No. 2002-280183, No. 2002-299060, No. 2002. -302516, 2002-305083, 2002-305084, 2002-308837, and the like.
(発光ドーパント)
本発明に係る発光ドーパントについて説明する。(Luminescent dopant)
The light emitting dopant according to the present invention will be described.
本発明に係る発光ドーパントとしては、蛍光ドーパント(蛍光性化合物ともいう)、リン光発光性ドーパント(リン光発光体、リン光性化合物、リン光発光性化合物等ともいう)を用いることができるが、より発光効率の高い有機EL素子を得る観点からは、本発明の有機EL素子の発光層や発光ユニットに使用される発光ドーパント(単に、発光材料ということもある)としては、上記のホスト化合物を含有すると同時に、リン光発光性ドーパントを含有することが好ましい。 As the light-emitting dopant according to the present invention, a fluorescent dopant (also referred to as a fluorescent compound) or a phosphorescent dopant (also referred to as a phosphorescent emitter, a phosphorescent compound, a phosphorescent compound, or the like) can be used. From the viewpoint of obtaining an organic EL device having higher luminous efficiency, the above-mentioned host compound may be used as the luminescent dopant (simply referred to as a luminescent material) used in the light emitting layer or the light emitting unit of the organic EL device of the present invention. It is preferable to contain a phosphorescent dopant at the same time as containing.
(リン光発光性化合物(リン光発光性ドーパント))
本発明に係るリン光発光性化合物(リン光発光性ドーパント)について説明する。(Phosphorescent compound (phosphorescent dopant))
The phosphorescent compound (phosphorescent dopant) according to the present invention will be described.
本発明に係るリン光発光性化合物は、励起三重項からの発光が観測される化合物であり、具体的には、室温(25℃)にてリン光発光する化合物であり、リン光量子収率が、25℃において0.01以上の化合物であると定義されるが、好ましいリン光量子収率は0.1以上である。 The phosphorescent compound according to the present invention is a compound in which light emission from an excited triplet is observed. Specifically, it is a compound that emits phosphorescence at room temperature (25 ° C.) and has a phosphorescence quantum yield. The phosphorescence quantum yield is preferably 0.1 or more, although it is defined as a compound of 0.01 or more at 25 ° C.
上記リン光量子収率は、第4版実験化学講座7の分光IIの398頁(1992年版、丸善)に記載の方法により測定できる。溶液中でのリン光量子収率は種々の溶媒を用いて測定できるが、本発明に係るリン光発光性化合物は、任意の溶媒のいずれかにおいて上記リン光量子収率(0.01以上)が達成されればよい。 The phosphorescence quantum yield can be measured by the method described in Spectroscopic II, page 398 (1992 edition, Maruzen) of Experimental Chemistry Course 4 of the 4th edition. Although the phosphorescence quantum yield in a solution can be measured using various solvents, the phosphorescence emitting compound according to the present invention achieves the above phosphorescence quantum yield (0.01 or more) in any solvent. It only has to be done.
リン光発光性化合物トの発光は原理としては2種挙げられ、一つはキャリアが輸送されるホスト化合物上でキャリアの再結合が起こってホスト化合物の励起状態が生成し、このエネルギーをリン光発光性化合物に移動させることでリン光発光性化合物トからの発光を得るというエネルギー移動型、もう一つはリン光発光性化合物がキャリアトラップとなり、リン光発光性化合物上でキャリアの再結合が起こり、リン光発光性化合物からの発光が得られるというキャリアトラップ型が挙げられる。 There are two types of light emission of phosphorescent compounds. In principle, the recombination of carriers occurs on the host compound to which carriers are transported, and an excited state of the host compound is generated. This energy is phosphorescent. An energy transfer type that obtains light emission from the phosphorescent compound by transferring to the phosphorescent compound, and the other is that the phosphorescent compound becomes a carrier trap, and recombination of carriers on the phosphorescent compound is performed. And a carrier trap type in which light emission from the phosphorescent compound is obtained.
上記のいずれの場合においても、リン光発光性化合物の励起状態のエネルギーはホスト化合物の励起状態のエネルギーよりも低いことが条件である。 In any of the above cases, it is a condition that the excited state energy of the phosphorescent compound is lower than the excited state energy of the host compound.
リン光発光性化合物は、有機EL素子の発光層に使用される公知のものの中から適宜選択して用いることができる。 The phosphorescent compound can be appropriately selected from known compounds used for the light emitting layer of the organic EL device.
本発明に係るリン光発光性化合物としては、好ましくは元素周期表で8族〜10族の金属を含有する錯体系化合物であり、更に好ましくはイリジウム化合物(Ir錯体)、オスミウム化合物、または白金化合物(白金錯体系化合物)、希土類錯体であり、中でも最も好ましいのはイリジウム化合物(Ir錯体)である。 The phosphorescent compound according to the present invention is preferably a complex compound containing a group 8-10 metal in the periodic table, more preferably an iridium compound (Ir complex), an osmium compound, or a platinum compound. (Platinum complex compounds) and rare earth complexes, with iridium compounds (Ir complexes) being most preferred among them.
《一般式(6)で表されるリン光発光性化合物》
本発明に係るリン光発光性化合物としては、上記一般式(6)で表される化合物が好ましく用いられる。<< Phosphorescent Compound Represented by General Formula (6) >>
As the phosphorescent compound according to the present invention, a compound represented by the general formula (6) is preferably used.
一般式(6)において、A1で表される芳香族炭化水素環としては、ベンゼン環、ビフェニル環、ナフタレン環、アズレン環、アントラセン環、フェナントレン環、ピレン環、クリセン環、ナフタセン環、トリフェニレン環、o−テルフェニル環、m−テルフェニル環、p−テルフェニル環、アセナフテン環、コロネン環、フルオレン環、フルオラントレン環、ナフタセン環、ペンタセン環、ペリレン環、ペンタフェン環、ピセン環、ピレン環、ピラントレン環、アンスラアントレン環等が挙げられる。これらの環は更に、後述する置換基を有してもよい。 In the general formula (6), the aromatic hydrocarbon ring represented by A1 includes a benzene ring, biphenyl ring, naphthalene ring, azulene ring, anthracene ring, phenanthrene ring, pyrene ring, chrysene ring, naphthacene ring, triphenylene ring, o-terphenyl ring, m-terphenyl ring, p-terphenyl ring, acenaphthene ring, coronene ring, fluorene ring, fluoranthrene ring, naphthacene ring, pentacene ring, perylene ring, pentaphen ring, picene ring, pyrene ring, Examples include a pyranthrene ring and anthraanthrene ring. These rings may further have a substituent described later.
一般式(6)において、A1で表される芳香族複素環としては、例えば、フラン環、チオフェン環、オキサゾール環、ピロール環、ピリジン環、ピリダジン環、ピリミジン環、ピラジン環、トリアジン環、ベンゾイミダゾール環、オキサジアゾール環、トリアゾール環、イミダゾール環、ピラゾール環、チアゾール環、インドール環、インダゾール環、ベンゾイミダゾール環、ベンゾチアゾール環、ベンゾオキサゾール環、キノキサリン環、キナゾリン環、シンノリン環、キノリン環、イソキノリン環、フタラジン環、ナフチリジン環、カルバゾール環、カルボリン環、ジアザカルバゾール環(カルボリン環を構成する炭素原子の一つが更に窒素原子で置換されている環を示す)等が挙げられる。 In the general formula (6), examples of the aromatic heterocycle represented by A1 include a furan ring, a thiophene ring, an oxazole ring, a pyrrole ring, a pyridine ring, a pyridazine ring, a pyrimidine ring, a pyrazine ring, a triazine ring, and a benzimidazole. Ring, oxadiazole ring, triazole ring, imidazole ring, pyrazole ring, thiazole ring, indazole ring, indazole ring, benzimidazole ring, benzothiazole ring, benzoxazole ring, quinoxaline ring, quinazoline ring, cinnoline ring, quinoline ring, isoquinoline Ring, phthalazine ring, naphthyridine ring, carbazole ring, carboline ring, diazacarbazole ring (showing a ring in which one of the carbon atoms constituting the carboline ring is further substituted with a nitrogen atom) and the like.
これらの環は更に後述する置換基を有していても良い。 These rings may further have a substituent described later.
《置換基》
上記のA1で表される芳香族炭化水素環または芳香族複素環が有していても良い置換基としては、置換基の例としてはアルキル基(例えば、メチル基、エチル基、プロピル基、イソプロピル基、tert−ブチル基、ペンチル基、ヘキシル基、オクチル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基等)、シクロアルキル基(例えば、シクロペンチル基、シクロヘキシル基等)、アルケニル基(例えば、ビニル基、アリル基等)、アルキニル基(例えば、エチニル基、プロパルギル基等)、芳香族炭化水素基(芳香族炭化水素環基、芳香族炭素環基、アリール基等ともいい、例えば、フェニル基、p−クロロフェニル基、メシチル基、トリル基、キシリル基、ナフチル基、アントリル基、アズレニル基、アセナフテニル基、フルオレニル基、フェナントリル基、インデニル基、ピレニル基、ビフェニリル基等)、芳香族複素環基(例えば、ピリジル基、ピリミジニル基、フリル基、ピロリル基、イミダゾリル基、ベンゾイミダゾリル基、ピラゾリル基、ピラジニル基、トリアゾリル基(例えば、1,2,4−トリアゾール−1−イル基、1,2,3−トリアゾール−1−イル基等)、オキサゾリル基、ベンゾオキサゾリル基、チアゾリル基、イソオキサゾリル基、イソチアゾリル基、フラザニル基、チエニル基、キノリル基、ベンゾフリル基、ジベンゾフリル基、ベンゾチエニル基、ジベンゾチエニル基、インドリル基、カルバゾリル基、カルボリニル基、ジアザカルバゾリル基(前記カルボリニル基のカルボリン環を構成する炭素原子の一つが窒素原子で置き換わったものを示す)、キノキサリニル基、ピリダジニル基、トリアジニル基、キナゾリニル基、フタラジニル基等)、複素環基(例えば、ピロリジル基、イミダゾリジル基、モルホリル基、オキサゾリジル基等)、アルコキシ基(例えば、メトキシ基、エトキシ基、プロピルオキシ基、ペンチルオキシ基、ヘキシルオキシ基、オクチルオキシ基、ドデシルオキシ基等)、シクロアルコキシ基(例えば、シクロペンチルオキシ基、シクロヘキシルオキシ基等)、アリールオキシ基(例えば、フェノキシ基、ナフチルオキシ基等)、アルキルチオ基(例えば、メチルチオ基、エチルチオ基、プロピルチオ基、ペンチルチオ基、ヘキシルチオ基、オクチルチオ基、ドデシルチオ基等)、シクロアルキルチオ基(例えば、シクロペンチルチオ基、シクロヘキシルチオ基等)、アリールチオ基(例えば、フェニルチオ基、ナフチルチオ基等)、アルコキシカルボニル基(例えば、メチルオキシカルボニル基、エチルオキシカルボニル基、ブチルオキシカルボニル基、オクチルオキシカルボニル基、ドデシルオキシカルボニル基等)、アリールオキシカルボニル基(例えば、フェニルオキシカルボニル基、ナフチルオキシカルボニル基等)、スルファモイル基(例えば、アミノスルホニル基、メチルアミノスルホニル基、ジメチルアミノスルホニル基、ブチルアミノスルホニル基、ヘキシルアミノスルホニル基、シクロヘキシルアミノスルホニル基、オクチルアミノスルホニル基、ドデシルアミノスルホニル基、フェニルアミノスルホニル基、ナフチルアミノスルホニル基、2−ピリジルアミノスルホニル基等)、アシル基(例えば、アセチル基、エチルカルボニル基、プロピルカルボニル基、ペンチルカルボニル基、シクロヘキシルカルボニル基、オクチルカルボニル基、2−エチルヘキシルカルボニル基、ドデシルカルボニル基、フェニルカルボニル基、ナフチルカルボニル基、ピリジルカルボニル基等)、アシルオキシ基(例えば、アセチルオキシ基、エチルカルボニルオキシ基、ブチルカルボニルオキシ基、オクチルカルボニルオキシ基、ドデシルカルボニルオキシ基、フェニルカルボニルオキシ基等)、アミド基(例えば、メチルカルボニルアミノ基、エチルカルボニルアミノ基、ジメチルカルボニルアミノ基、プロピルカルボニルアミノ基、ペンチルカルボニルアミノ基、シクロヘキシルカルボニルアミノ基、2−エチルヘキシルカルボニルアミノ基、オクチルカルボニルアミノ基、ドデシルカルボニルアミノ基、フェニルカルボニルアミノ基、ナフチルカルボニルアミノ基等)、カルバモイル基(例えば、アミノカルボニル基、メチルアミノカルボニル基、ジメチルアミノカルボニル基、プロピルアミノカルボニル基、ペンチルアミノカルボニル基、シクロヘキシルアミノカルボニル基、オクチルアミノカルボニル基、2−エチルヘキシルアミノカルボニル基、ドデシルアミノカルボニル基、フェニルアミノカルボニル基、ナフチルアミノカルボニル基、2−ピリジルアミノカルボニル基等)、ウレイド基(例えば、メチルウレイド基、エチルウレイド基、ペンチルウレイド基、シクロヘキシルウレイド基、オクチルウレイド基、ドデシルウレイド基、フェニルウレイド基ナフチルウレイド基、2−ピリジルアミノウレイド基等)、スルフィニル基(例えば、メチルスルフィニル基、エチルスルフィニル基、ブチルスルフィニル基、シクロヘキシルスルフィニル基、2−エチルヘキシルスルフィニル基、ドデシルスルフィニル基、フェニルスルフィニル基、ナフチルスルフィニル基、2−ピリジルスルフィニル基等)、アルキルスルホニル基(例えば、メチルスルホニル基、エチルスルホニル基、ブチルスルホニル基、シクロヘキシルスルホニル基、2−エチルヘキシルスルホニル基、ドデシルスルホニル基等)、アリールスルホニル基またはヘテロアリールスルホニル基(例えば、フェニルスルホニル基、ナフチルスルホニル基、2−ピリジルスルホニル基等)、アミノ基(例えば、アミノ基、エチルアミノ基、ジメチルアミノ基、ブチルアミノ基、シクロペンチルアミノ基、2−エチルヘキシルアミノ基、ドデシルアミノ基、アニリノ基、ナフチルアミノ基、2−ピリジルアミノ基等)、ハロゲン原子(例えば、フッ素原子、塩素原子、臭素原子等)、フッ化炭化水素基(例えば、フルオロメチル基、トリフルオロメチル基、ペンタフルオロエチル基、ペンタフルオロフェニル基等)、シアノ基、ニトロ基、ヒドロキシ基、メルカプト基、シリル基(例えば、トリメチルシリル基、トリイソプロピルシリル基、トリフェニルシリル基、フェニルジエチルシリル基等)、ホスホノ基等が挙げられる。<< Substituent >>
Examples of the substituent that the aromatic hydrocarbon ring or aromatic heterocyclic ring represented by A1 may have an alkyl group (for example, a methyl group, an ethyl group, a propyl group, an isopropyl group). Group, tert-butyl group, pentyl group, hexyl group, octyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, etc.), cycloalkyl group (for example, cyclopentyl group, cyclohexyl group, etc.), alkenyl group (for example, vinyl) Group, allyl group, etc.), alkynyl group (eg, ethynyl group, propargyl group, etc.), aromatic hydrocarbon group (aromatic hydrocarbon ring group, aromatic carbocyclic group, aryl group, etc., for example, phenyl group, p-chlorophenyl group, mesityl group, tolyl group, xylyl group, naphthyl group, anthryl group, azulenyl group, acenaphthenyl group Fluorenyl group, phenanthryl group, indenyl group, pyrenyl group, biphenylyl group, etc.), aromatic heterocyclic group (for example, pyridyl group, pyrimidinyl group, furyl group, pyrrolyl group, imidazolyl group, benzimidazolyl group, pyrazolyl group, pyrazinyl group, triazolyl group) Groups (for example, 1,2,4-triazol-1-yl group, 1,2,3-triazol-1-yl group, etc.), oxazolyl group, benzoxazolyl group, thiazolyl group, isoxazolyl group, isothiazolyl group, Flazanyl group, thienyl group, quinolyl group, benzofuryl group, dibenzofuryl group, benzothienyl group, dibenzothienyl group, indolyl group, carbazolyl group, carbolinyl group, diazacarbazolyl group (carbon constituting the carboline ring of the carbolinyl group) One of the atoms is a nitrogen atom Quinoxalinyl group, pyridazinyl group, triazinyl group, quinazolinyl group, phthalazinyl group, etc.), heterocyclic group (eg, pyrrolidyl group, imidazolidyl group, morpholyl group, oxazolidyl group, etc.), alkoxy group (eg, methoxy Group, ethoxy group, propyloxy group, pentyloxy group, hexyloxy group, octyloxy group, dodecyloxy group, etc.), cycloalkoxy group (for example, cyclopentyloxy group, cyclohexyloxy group, etc.), aryloxy group (for example, phenoxy) Group, naphthyloxy group, etc.), alkylthio group (eg, methylthio group, ethylthio group, propylthio group, pentylthio group, hexylthio group, octylthio group, dodecylthio group, etc.), cycloalkylthio group (eg, cyclopentylthio group, cyclyl). Rohexylthio group, etc.), arylthio group (eg, phenylthio group, naphthylthio group, etc.), alkoxycarbonyl group (eg, methyloxycarbonyl group, ethyloxycarbonyl group, butyloxycarbonyl group, octyloxycarbonyl group, dodecyloxycarbonyl group, etc.) An aryloxycarbonyl group (eg, phenyloxycarbonyl group, naphthyloxycarbonyl group, etc.), a sulfamoyl group (eg, aminosulfonyl group, methylaminosulfonyl group, dimethylaminosulfonyl group, butylaminosulfonyl group, hexylaminosulfonyl group, cyclohexyl) Aminosulfonyl group, octylaminosulfonyl group, dodecylaminosulfonyl group, phenylaminosulfonyl group, naphthylaminosulfonyl group, 2-pyridylamino Sulfonyl group, etc.), acyl group (for example, acetyl group, ethylcarbonyl group, propylcarbonyl group, pentylcarbonyl group, cyclohexylcarbonyl group, octylcarbonyl group, 2-ethylhexylcarbonyl group, dodecylcarbonyl group, phenylcarbonyl group, naphthylcarbonyl group) , Pyridylcarbonyl group etc.), acyloxy group (eg acetyloxy group, ethylcarbonyloxy group, butylcarbonyloxy group, octylcarbonyloxy group, dodecylcarbonyloxy group, phenylcarbonyloxy group etc.), amide group (eg methylcarbonyl) Amino group, ethylcarbonylamino group, dimethylcarbonylamino group, propylcarbonylamino group, pentylcarbonylamino group, cyclohexylcarbonylamino group, 2-ethyl Xylcarbonylamino group, octylcarbonylamino group, dodecylcarbonylamino group, phenylcarbonylamino group, naphthylcarbonylamino group, etc.), carbamoyl group (for example, aminocarbonyl group, methylaminocarbonyl group, dimethylaminocarbonyl group, propylaminocarbonyl group) Pentylaminocarbonyl group, cyclohexylaminocarbonyl group, octylaminocarbonyl group, 2-ethylhexylaminocarbonyl group, dodecylaminocarbonyl group, phenylaminocarbonyl group, naphthylaminocarbonyl group, 2-pyridylaminocarbonyl group, etc.), ureido group (for example, , Methylureido group, ethylureido group, pentylureido group, cyclohexylureido group, octylureido group, dodecylureido group, phenyl Ureido group naphthylureido group, 2-pyridylaminoureido group, etc.), sulfinyl group (for example, methylsulfinyl group, ethylsulfinyl group, butylsulfinyl group, cyclohexylsulfinyl group, 2-ethylhexylsulfinyl group, dodecylsulfinyl group, phenylsulfinyl group, naphthyl) Sulfinyl group, 2-pyridylsulfinyl group, etc.), alkylsulfonyl group (for example, methylsulfonyl group, ethylsulfonyl group, butylsulfonyl group, cyclohexylsulfonyl group, 2-ethylhexylsulfonyl group, dodecylsulfonyl group, etc.), arylsulfonyl group or hetero An arylsulfonyl group (eg, phenylsulfonyl group, naphthylsulfonyl group, 2-pyridylsulfonyl group, etc.), amino group (eg, amino group, ethyl Amino group, dimethylamino group, butylamino group, cyclopentylamino group, 2-ethylhexylamino group, dodecylamino group, anilino group, naphthylamino group, 2-pyridylamino group, etc.), halogen atom (for example, fluorine atom, chlorine atom, Bromine atom etc.), fluorinated hydrocarbon group (eg fluoromethyl group, trifluoromethyl group, pentafluoroethyl group, pentafluorophenyl group etc.), cyano group, nitro group, hydroxy group, mercapto group, silyl group (eg , Trimethylsilyl group, triisopropylsilyl group, triphenylsilyl group, phenyldiethylsilyl group, etc.), phosphono group and the like.
また、これらの置換基は上記の置換基によって更に置換されていてもよい。また、これらの置換基は複数が互いに結合して環を形成していてもよい。 In addition, these substituents may be further substituted with the above substituents. In addition, a plurality of these substituents may be bonded to each other to form a ring.
一般式(6)において、A2で表される芳香族炭化水素環、芳香族複素環は、一般式(6)において、A1で表される芳香族炭化水素環、芳香族複素環と各々同義である。 In the general formula (6), the aromatic hydrocarbon ring and aromatic heterocycle represented by A2 are respectively synonymous with the aromatic hydrocarbon ring and aromatic heterocycle represented by A1 in the general formula (6). is there.
一般式(6)において、P1−L1−P2で表される2座の配位子としては、例えば、置換または無置換のフェニルピリジン、フェニルピラゾール、フェニルイミダゾール、フェニルトリアゾール、フェニルテトラゾール、ピラザボール、アセチルアセトン、ピコリン酸等が挙げられる。 In the general formula (6), examples of the bidentate ligand represented by P1-L1-P2 include substituted or unsubstituted phenylpyridine, phenylpyrazole, phenylimidazole, phenyltriazole, phenyltetrazole, pyrazabol, acetylacetone. And picolinic acid.
一般式(6)において、M1は、元素周期表における8〜10族の遷移金属元素(単に遷移金属ともいう)が用いられるが、中でもイリジウム、白金が好ましく、特にイリジウムが好ましい。 In the general formula (6), M1 is a transition metal element of group 8 to 10 in the periodic table of elements (also simply referred to as a transition metal), among which iridium and platinum are preferable, and iridium is particularly preferable.
《一般式(7)で表されるリン光発光性化合物》
本発明に係る一般式(6)で表されるリン光発光性化合物の中でも、一般式(7)で表されるリン光発光性化合物が好ましく用いられる。<< Phosphorescent Compound Represented by General Formula (7) >>
Among the phosphorescent compounds represented by the general formula (6) according to the present invention, the phosphorescent compounds represented by the general formula (7) are preferably used.
一般式(7)において、Zで表される炭化水素環基としては、非芳香族炭化水素環基、芳香族炭化水素環基が挙げられ、非芳香族炭化水素環基としては、シクロプロピル基、シクロペンチル基、シクロヘキシル基等が挙げられる。これらの基は、無置換でも上記のA1で表される芳香族炭化水素環または芳香族複素環が有していても良い置換基を有していてもよい。 In the general formula (7), examples of the hydrocarbon ring group represented by Z include a non-aromatic hydrocarbon ring group and an aromatic hydrocarbon ring group, and examples of the non-aromatic hydrocarbon ring group include a cyclopropyl group. , Cyclopentyl group, cyclohexyl group and the like. These groups may be unsubstituted or may have a substituent which the aromatic hydrocarbon ring or aromatic heterocyclic ring represented by A1 may have.
また、芳香族炭化水素環基(芳香族炭化水素基、アリール基等ともいう)としては、例えば、フェニル基、p−クロロフェニル基、メシチル基、トリル基、キシリル基、ナフチル基、アントリル基、アズレニル基、アセナフテニル基、フルオレニル基、フェナントリル基、インデニル基、ピレニル基、ビフェニリル基等が挙げられる。これらの基は、無置換でもよく、上記のA1で表される芳香族炭化水素環または芳香族複素環が有していても良い置換基を有してもよい。 Examples of the aromatic hydrocarbon ring group (also referred to as aromatic hydrocarbon group, aryl group, etc.) include, for example, phenyl group, p-chlorophenyl group, mesityl group, tolyl group, xylyl group, naphthyl group, anthryl group, azulenyl. Group, acenaphthenyl group, fluorenyl group, phenanthryl group, indenyl group, pyrenyl group, biphenylyl group and the like. These groups may be unsubstituted or may have a substituent which the aromatic hydrocarbon ring or aromatic heterocyclic ring represented by A1 may have.
一般式(7)において、A1で表される芳香族炭化水素環は、一般式(6)において、A1で表される芳香族炭化水素環と同義である。 In the general formula (7), the aromatic hydrocarbon ring represented by A1 has the same meaning as the aromatic hydrocarbon ring represented by A1 in the general formula (6).
一般式(7)において、A1で表される芳香族複素環は、一般式(6)において、A1で表される芳香族複素環と同義である。 In the general formula (7), the aromatic heterocycle represented by A1 has the same meaning as the aromatic heterocycle represented by A1 in the general formula (6).
一般式(7)のA3において、R01、R02で各々表される置換基は、一般式(6)において、A1で表される芳香族炭化水素環または芳香族複素環が有していても良い置換基と同義である。In A3 of the general formula (7), each of the substituents represented by R 01 and R 02 has the aromatic hydrocarbon ring or the aromatic heterocycle represented by A1 in the general formula (6). Is synonymous with a good substituent.
一般式(7)において、P1−L1−P2で表される2座の配位子は、一般式(6)において、P1−L1−P2で表される2座の配位子と同義である。 In the general formula (7), the bidentate ligand represented by P1-L1-P2 has the same meaning as the bidentate ligand represented by P1-L1-P2 in the general formula (6). .
一般式(7)において、M1で表される元素周期表における8〜10族の金属元素は、一般式(6)において、M1で表される元素周期表における8〜10族の遷移金属元素(単に遷移金属ともいう)と同義である。In the general formula (7), 8-10 metal elements in the periodic table represented by M 1 are the compounds of formula (6), a transition metal of Group 8 to Group 10 in the periodic table represented by M 1 Synonymous with element (also referred to simply as transition metal).
以下に、リン光発光性化合物として用いられる化合物の具体例を示すが、本発明はこれらに限定されない。これらの化合物は、例えば、Inorg.Chem.40巻、1704〜1711に記載の方法等により合成できる。 Specific examples of the compound used as the phosphorescent compound are shown below, but the present invention is not limited thereto. These compounds are described, for example, in Inorg. Chem. 40, 1704-1711, and the like.
以下、本発明に係るリン光発光性ドーパントの具体例を示すが、本発明はこれらに限定されない。 Hereinafter, although the specific example of the phosphorescence-emitting dopant which concerns on this invention is shown, this invention is not limited to these.
(蛍光ドーパント(蛍光性化合物ともいう))
蛍光ドーパント(蛍光性化合物)としては、クマリン系色素、ピラン系色素、シアニン系色素、クロコニウム系色素、スクアリウム系色素、オキソベンツアントラセン系色素、フルオレセイン系色素、ローダミン系色素、ピリリウム系色素、ペリレン系色素、スチルベン系色素、ポリチオフェン系色素または希土類錯体系蛍光体等が挙げられる。(Fluorescent dopant (also called fluorescent compound))
Fluorescent dopants (fluorescent compounds) include coumarin dyes, pyran dyes, cyanine dyes, croconium dyes, squalium dyes, oxobenzanthracene dyes, fluorescein dyes, rhodamine dyes, pyrylium dyes, perylene dyes Examples thereof include dyes, stilbene dyes, polythiophene dyes, and rare earth complex phosphors.
次に、本発明の有機EL素子の構成層として用いられる、注入層、阻止層、電子輸送層等について説明する。 Next, an injection layer, a blocking layer, an electron transport layer, and the like used as a constituent layer of the organic EL element of the present invention will be described.
《注入層:電子注入層、正孔注入層》
注入層は必要に応じて設け、電子注入層と正孔注入層があり、上記の如く陽極と発光層または正孔輸送層の間、及び陰極と発光層または電子輸送層との間に存在させてもよい。<< Injection layer: electron injection layer, hole injection layer >>
The injection layer is provided as necessary, and there are an electron injection layer and a hole injection layer, and as described above, it exists between the anode and the light emitting layer or the hole transport layer and between the cathode and the light emitting layer or the electron transport layer. May be.
注入層とは、駆動電圧低下や発光輝度向上のために電極と有機層間に設けられる層を示し、「有機EL素子とその工業化最前線(1998年11月30日エヌ・ティー・エス社発行)」の第2編第2章「電極材料」(123頁〜166頁)に詳細に記載されており、正孔注入層(陽極バッファー層)と電子注入層(陰極バッファー層)とがある。 The injection layer refers to a layer provided between the electrode and the organic layer for lowering the driving voltage and improving the light emission luminance. “The organic EL element and the forefront of its industrialization (issued by NTT Corporation on November 30, 1998) 2 of Chapter 2, “Electrode Materials” (pages 123 to 166) in detail, and includes a hole injection layer (anode buffer layer) and an electron injection layer (cathode buffer layer).
陽極バッファー層(正孔注入層)は、特開平9−45479号公報、同9−260062号公報、同8−288069号公報等にもその詳細が記載されており、具体例として、銅フタロシアニンに代表されるフタロシアニンバッファー層、酸化バナジウムに代表される酸化物バッファー層、アモルファスカーボンバッファー層、ポリアニリン(エメラルディン)やポリチオフェン等の導電性高分子を用いた高分子バッファー層等が挙げられる。 The details of the anode buffer layer (hole injection layer) are described in JP-A-9-45479, JP-A-9-260062, JP-A-8-288069 and the like. As a specific example, copper phthalocyanine is used. Examples thereof include a phthalocyanine buffer layer represented by an oxide, an oxide buffer layer represented by vanadium oxide, an amorphous carbon buffer layer, and a polymer buffer layer using a conductive polymer such as polyaniline (emeraldine) or polythiophene.
陰極バッファー層(電子注入層)は、特開平6−325871号公報、同9−17574号公報、同10−74586号公報等にもその詳細が記載されており、具体的にはストロンチウムやアルミニウム等に代表される金属バッファー層、フッ化リチウムに代表されるアルカリ金属化合物バッファー層、フッ化マグネシウムに代表されるアルカリ土類金属化合物バッファー層、酸化アルミニウムに代表される酸化物バッファー層等が挙げられる。上記バッファー層(注入層)はごく薄い膜であることが望ましく、素材にもよるがその膜厚は0.1nm〜5μmの範囲が好ましい。 The details of the cathode buffer layer (electron injection layer) are described in JP-A-6-325871, JP-A-9-17574, JP-A-10-74586, and the like. Specifically, strontium, aluminum, etc. Metal buffer layer typified by lithium, alkali metal compound buffer layer typified by lithium fluoride, alkaline earth metal compound buffer layer typified by magnesium fluoride, oxide buffer layer typified by aluminum oxide, etc. . The buffer layer (injection layer) is preferably a very thin film, and the film thickness is preferably in the range of 0.1 nm to 5 μm although it depends on the material.
《阻止層:正孔阻止層、電子阻止層》
阻止層は、上記の如く有機化合物薄膜の基本構成層の他に必要に応じて設けられるものである。例えば、特開平11−204258号公報、同11−204359号公報、及び「有機EL素子とその工業化最前線(1998年11月30日エヌ・ティー・エス社発行)」の237頁等に記載されている正孔阻止(ホールブロック)層がある。<Blocking layer: hole blocking layer, electron blocking layer>
The blocking layer is provided as necessary in addition to the basic constituent layer of the organic compound thin film as described above. For example, it is described in JP-A Nos. 11-204258, 11-204359, and “Organic EL elements and their forefront of industrialization” (issued by NTT, Inc. on November 30, 1998). There is a hole blocking (hole blocking) layer.
正孔阻止層とは広い意味では電子輸送層の機能を有し、電子を輸送する機能を有しつつ正孔を輸送する能力が著しく小さい正孔阻止材料からなり、電子を輸送しつつ正孔を阻止することで電子と正孔の再結合確率を向上させることができる。 The hole blocking layer has a function of an electron transport layer in a broad sense, and is made of a hole blocking material that has a function of transporting electrons and has a remarkably small ability to transport holes. The probability of recombination of electrons and holes can be improved by blocking.
また、後述する電子輸送層の構成を必要に応じて、本発明に係わる正孔阻止層として用いることができる。 Moreover, the structure of the electron carrying layer mentioned later can be used as a hole-blocking layer concerning this invention as needed.
本発明の有機EL素子の正孔阻止層は、発光層に隣接して設けられていることが好ましい。 The hole blocking layer of the organic EL device of the present invention is preferably provided adjacent to the light emitting layer.
正孔阻止層には、前述のホスト化合物として挙げたアザカルバゾール誘導体を含有することが好ましい。 The hole blocking layer preferably contains the azacarbazole derivative mentioned as the host compound.
また、本発明においては、複数の発光色の異なる複数の発光層を有する場合、その発光極大波長が最も短波にある発光層が、全発光層中、最も陽極に近いことが好ましいが、このような場合、該最短波層と該層の次に陽極に近い発光層との間に正孔阻止層を追加して設けることが好ましい。 In the present invention, when a plurality of light emitting layers having different light emission colors are provided, the light emitting layer having the shortest wavelength of light emission is preferably closest to the anode among all the light emitting layers. In this case, it is preferable to additionally provide a hole blocking layer between the shortest wave layer and the light emitting layer next to the anode next to the anode.
更には、該位置に設けられる正孔阻止層に含有される化合物の50質量%以上が、前記最短波発光層のホスト化合物に対しそのイオン化ポテンシャルが0.3eV以上大きいことが好ましい。 Furthermore, it is preferable that 50% by mass or more of the compound contained in the hole blocking layer provided at the position has an ionization potential of 0.3 eV or more larger than the host compound of the shortest wave emitting layer.
イオン化ポテンシャルは化合物のHOMO(最高被占分子軌道)レベルにある電子を真空準位に放出するのに必要なエネルギーで定義され、例えば下記に示すような方法により求めることができる。 The ionization potential is defined by the energy required to emit an electron at the HOMO (highest occupied molecular orbital) level of the compound to the vacuum level, and can be obtained by the following method, for example.
(1)米国Gaussian社製の分子軌道計算用ソフトウェアであるGaussian98(Gaussian98、Revision A.11.4,M.J.Frisch,et al,Gaussian,Inc.,Pittsburgh PA,2002.)を用い、キーワードとしてB3LYP/6−31G*を用いて構造最適化を行うことにより算出した値(eV単位換算値)の小数点第2位を四捨五入した値としてイオン化ポテンシャルを求めることができる。この計算値が有効な背景には、この手法で求めた計算値と実験値の相関が高いためである。 (1) Using Gaussian 98 (Gaussian 98, Revision A.11.4, MJ Frisch, et al, Gaussian, Inc., Pittsburgh PA, 2002.), a molecular orbital calculation software manufactured by Gaussian, USA The ionization potential can be obtained as a value obtained by rounding off the second decimal place of the value (eV unit converted value) calculated by performing structural optimization using B3LYP / 6-31G *. This calculation value is effective because the correlation between the calculation value obtained by this method and the experimental value is high.
(2)イオン化ポテンシャルは光電子分光法で直接測定する方法により求めることもできる。例えば、理研計器社製の低エネルギー電子分光装置「Model AC−1」を用いて、あるいは紫外光電子分光として知られている方法を好適に用いることができる。 (2) The ionization potential can also be obtained by a method of directly measuring by photoelectron spectroscopy. For example, a method known as ultraviolet photoelectron spectroscopy can be suitably used by using a low energy electron spectrometer “Model AC-1” manufactured by Riken Keiki Co., Ltd.
一方、電子阻止層とは広い意味では正孔輸送層の機能を有し、正孔を輸送する機能を有しつつ電子を輸送する能力が著しく小さい材料からなり、正孔を輸送しつつ電子を阻止することで電子と正孔の再結合確率を向上させることができる。 On the other hand, the electron blocking layer has a function of a hole transport layer in a broad sense, and is made of a material that has a function of transporting holes and has an extremely small ability to transport electrons, and transports electrons while transporting holes. By blocking, the recombination probability of electrons and holes can be improved.
また、後述する正孔輸送層の構成を必要に応じて電子阻止層として用いることができる。本発明に係る正孔阻止層、電子輸送層の膜厚としては、好ましくは3nm〜100nmであり、更に好ましくは5nm〜30nmである。 Moreover, the structure of the positive hole transport layer mentioned later can be used as an electron blocking layer as needed. The film thickness of the hole blocking layer and the electron transport layer according to the present invention is preferably 3 nm to 100 nm, and more preferably 5 nm to 30 nm.
《正孔輸送層》
正孔輸送層とは正孔を輸送する機能を有する正孔輸送材料からなり、広い意味で正孔注入層、電子阻止層も正孔輸送層に含まれる。正孔輸送層は単層または複数層設けることができる。《Hole transport layer》
The hole transport layer is made of a hole transport material having a function of transporting holes, and in a broad sense, a hole injection layer and an electron blocking layer are also included in the hole transport layer. The hole transport layer can be provided as a single layer or a plurality of layers.
正孔輸送材料としては、正孔の注入または輸送、電子の障壁性のいずれかを有するものであり、有機物、無機物のいずれであってもよい。例えば、トリアゾール誘導体、オキサジアゾール誘導体、イミダゾール誘導体、ポリアリールアルカン誘導体、ピラゾリン誘導体及びピラゾロン誘導体、フェニレンジアミン誘導体、アリールアミン誘導体、アミノ置換カルコン誘導体、オキサゾール誘導体、スチリルアントラセン誘導体、フルオレノン誘導体、ヒドラゾン誘導体、スチルベン誘導体、シラザン誘導体、アニリン系共重合体、また導電性高分子オリゴマー、特にチオフェンオリゴマー等が挙げられる。 The hole transport material has any one of hole injection or transport and electron barrier properties, and may be either organic or inorganic. For example, triazole derivatives, oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives and pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, Examples thereof include stilbene derivatives, silazane derivatives, aniline copolymers, and conductive polymer oligomers, particularly thiophene oligomers.
正孔輸送材料としては上記のものを使用することができるが、ポルフィリン化合物、芳香族第3級アミン化合物及びスチリルアミン化合物、特に芳香族第3級アミン化合物を用いることが好ましい。 The above-mentioned materials can be used as the hole transport material, but it is preferable to use a porphyrin compound, an aromatic tertiary amine compound and a styrylamine compound, particularly an aromatic tertiary amine compound.
芳香族第3級アミン化合物及びスチリルアミン化合物の代表例としては、N,N,N′,N′−テトラフェニル−4,4′−ジアミノフェニル;N,N′−ジフェニル−N,N′−ビス(3−メチルフェニル)−〔1,1′−ビフェニル〕−4,4′−ジアミン(TPD);2,2−ビス(4−ジ−p−トリルアミノフェニル)プロパン;1,1−ビス(4−ジ−p−トリルアミノフェニル)シクロヘキサン;N,N,N′,N′−テトラ−p−トリル−4,4′−ジアミノビフェニル;1,1−ビス(4−ジ−p−トリルアミノフェニル)−4−フェニルシクロヘキサン;ビス(4−ジメチルアミノ−2−メチルフェニル)フェニルメタン;ビス(4−ジ−p−トリルアミノフェニル)フェニルメタン;N,N′−ジフェニル−N,N′−ジ(4−メトキシフェニル)−4,4′−ジアミノビフェニル;N,N,N′,N′−テトラフェニル−4,4′−ジアミノジフェニルエーテル;4,4′−ビス(ジフェニルアミノ)クオードリフェニル;N,N,N−トリ(p−トリル)アミン;4−(ジ−p−トリルアミノ)−4′−〔4−(ジ−p−トリルアミノ)スチリル〕スチルベン;4−N,N−ジフェニルアミノ−(2−ジフェニルビニル)ベンゼン;3−メトキシ−4′−N,N−ジフェニルアミノスチルベンゼン;N−フェニルカルバゾール、更には米国特許第5,061,569号明細書に記載されている2個の縮合芳香族環を分子内に有するもの、例えば、4,4′−ビス〔N−(1−ナフチル)−N−フェニルアミノ〕ビフェニル(NPD)、特開平4−308688号公報に記載されているトリフェニルアミンユニットが3つスターバースト型に連結された4,4′,4″−トリス〔N−(3−メチルフェニル)−N−フェニルアミノ〕トリフェニルアミン(MTDATA)等が挙げられる。 Representative examples of aromatic tertiary amine compounds and styrylamine compounds include N, N, N ', N'-tetraphenyl-4,4'-diaminophenyl; N, N'-diphenyl-N, N'- Bis (3-methylphenyl)-[1,1′-biphenyl] -4,4′-diamine (TPD); 2,2-bis (4-di-p-tolylaminophenyl) propane; 1,1-bis (4-di-p-tolylaminophenyl) cyclohexane; N, N, N ′, N′-tetra-p-tolyl-4,4′-diaminobiphenyl; 1,1-bis (4-di-p-tolyl) Aminophenyl) -4-phenylcyclohexane; bis (4-dimethylamino-2-methylphenyl) phenylmethane; bis (4-di-p-tolylaminophenyl) phenylmethane; N, N'-diphenyl-N, N ' − (4-methoxyphenyl) -4,4'-diaminobiphenyl; N, N, N ', N'-tetraphenyl-4,4'-diaminodiphenyl ether; 4,4'-bis (diphenylamino) quadriphenyl; N, N, N-tri (p-tolyl) amine; 4- (di-p-tolylamino) -4 '-[4- (di-p-tolylamino) styryl] stilbene; 4-N, N-diphenylamino- (2-diphenylvinyl) benzene; 3-methoxy-4′-N, N-diphenylaminostilbenzene; N-phenylcarbazole, and also two of those described in US Pat. No. 5,061,569. Having a condensed aromatic ring in the molecule, for example, 4,4'-bis [N- (1-naphthyl) -N-phenylamino] biphenyl (NPD), JP-A-4-3086 4,4 ', 4 "-tris [N- (3-methylphenyl) -N-phenylamino] triphenylamine in which three triphenylamine units described in Japanese Patent No. 8 are linked in a starburst type ( MTDATA) and the like.
更に、これらの材料を高分子鎖に導入した、またはこれらの材料を高分子の主鎖とした高分子材料を用いることもできる。また、p型−Si、p型−SiC等の無機化合物も正孔注入材料、正孔輸送材料として使用することができる。 Furthermore, a polymer material in which these materials are introduced into a polymer chain or these materials are used as a polymer main chain can also be used. In addition, inorganic compounds such as p-type-Si and p-type-SiC can also be used as the hole injection material and the hole transport material.
また、特開平11−251067号公報、J.Huang et.al.著文献(Applied Physics Letters 80(2002),p.139)に記載されているような、所謂p型正孔輸送材料を用いることもできる。 JP-A-11-251067, J. Org. Huang et. al. A so-called p-type hole transport material as described in a book (Applied Physics Letters 80 (2002), p. 139) can also be used.
本発明においては、より高性能の発光素子が得られることから、上記一般式(1)で表される重合性化合物または該重合性化合物から導かれる構造単位を有する高分子化合物を含有する本発明の有機EL素子材料を正孔輸送材料として用いることが好ましく、また、上記の材料を併用してもよい。 In the present invention, since a higher performance light emitting device can be obtained, the present invention contains a polymerizable compound represented by the general formula (1) or a polymer compound having a structural unit derived from the polymerizable compound. The organic EL element material is preferably used as a hole transport material, and the above materials may be used in combination.
正孔輸送層は上記正孔輸送材料を、例えば、真空蒸着法、スピンコート法、キャスト法、インクジェット法を含む印刷法、LB法等の公知の方法により、薄膜化することにより形成することができるが、本発明においては塗布法(ウェットプロセス)により作製されることが好ましい。正孔輸送層の膜厚については特に制限はないが、通常は5nm〜5μm程度、好ましくは5nm〜200nmである。この正孔輸送層は上記材料の1種または2種以上からなる一層構造であってもよい。 The hole transport layer can be formed by thinning the hole transport material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an ink jet method, or an LB method. However, in the present invention, it is preferably produced by a coating method (wet process). Although there is no restriction | limiting in particular about the film thickness of a positive hole transport layer, Usually, 5 nm-about 5 micrometers, Preferably it is 5 nm-200 nm. The hole transport layer may have a single layer structure composed of one or more of the above materials.
また、不純物をドープしたp性の高い正孔輸送層を用いることもできる。その例としては、特開平4−297076号公報、特開2000−196140号公報、同2001−102175号公報の各公報、J.Appl.Phys.,95,5773(2004)等に記載されたものが挙げられる。 Alternatively, a hole transport layer having a high p property doped with impurities can be used. Examples thereof include JP-A-4-297076, JP-A-2000-196140, 2001-102175, J. Pat. Appl. Phys. 95, 5773 (2004), and the like.
本発明においては、このようなp性の高い正孔輸送層を用いることが、より低消費電力の素子を作製することができるため好ましい。 In the present invention, it is preferable to use a hole transport layer having such a high p property because a device with lower power consumption can be produced.
《電子輸送層》
電子輸送層とは電子を輸送する機能を有する材料からなり、広い意味で電子注入層、正孔阻止層も電子輸送層に含まれる。電子輸送層は単層または複数層設けることができる。《Electron transport layer》
The electron transport layer is made of a material having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer. The electron transport layer can be provided as a single layer or a plurality of layers.
従来、単層の電子輸送層、及び複数層とする場合は発光層に対して陰極側に隣接する電子輸送層に用いられる電子輸送材料(正孔阻止材料を兼ねる)としては、陰極より注入された電子を発光層に伝達する機能を有していればよく、その材料としては従来公知の化合物の中から任意のものを選択して用いることができる。 Conventionally, in the case of a single electron transport layer and a plurality of layers, an electron transport material (also serving as a hole blocking material) used for an electron transport layer adjacent to the light emitting layer on the cathode side is injected from the cathode. Any material may be used as long as it has a function of transferring electrons to the light-emitting layer, and any material can be selected from conventionally known compounds.
例えば、ニトロ置換フルオレン誘導体、ジフェニルキノン誘導体、チオピランジオキシド誘導体、カルボジイミド、フレオレニリデンメタン誘導体、アントラキノジメタン及びアントロン誘導体、オキサジアゾール誘導体等が挙げられる。 Examples include nitro-substituted fluorene derivatives, diphenylquinone derivatives, thiopyran dioxide derivatives, carbodiimides, fluorenylidenemethane derivatives, anthraquinodimethane and anthrone derivatives, oxadiazole derivatives, and the like.
更に上記オキサジアゾール誘導体において、オキサジアゾール環の酸素原子を硫黄原子に置換したチアジアゾール誘導体、電子吸引基として知られているキノキサリン環を有するキノキサリン誘導体も、電子輸送材料として用いることができる。更にこれらの材料を高分子鎖に導入した、またはこれらの材料を高分子の主鎖とした高分子材料を用いることもできる。 Furthermore, in the above oxadiazole derivative, a thiadiazole derivative in which the oxygen atom of the oxadiazole ring is substituted with a sulfur atom, and a quinoxaline derivative having a quinoxaline ring known as an electron withdrawing group can also be used as an electron transport material. Furthermore, a polymer material in which these materials are introduced into a polymer chain or these materials are used as a polymer main chain can also be used.
また、8−キノリノール誘導体の金属錯体、例えば、トリス(8−キノリノール)アルミニウム(Alq)、トリス(5,7−ジクロロ−8−キノリノール)アルミニウム、トリス(5,7−ジブロモ−8−キノリノール)アルミニウム、トリス(2−メチル−8−キノリノール)アルミニウム、トリス(5−メチル−8−キノリノール)アルミニウム、ビス(8−キノリノール)亜鉛(Znq)等、及びこれらの金属錯体の中心金属がIn、Mg、Cu、Ca、Sn、GaまたはPbに置き替わった金属錯体も、電子輸送材料として用いることができる。 In addition, metal complexes of 8-quinolinol derivatives such as tris (8-quinolinol) aluminum (Alq), tris (5,7-dichloro-8-quinolinol) aluminum, tris (5,7-dibromo-8-quinolinol) aluminum Tris (2-methyl-8-quinolinol) aluminum, tris (5-methyl-8-quinolinol) aluminum, bis (8-quinolinol) zinc (Znq), and the like, and the central metals of these metal complexes are In, Mg, Metal complexes replaced with Cu, Ca, Sn, Ga or Pb can also be used as the electron transport material.
その他、メタルフリーもしくはメタルフタロシアニン、またはそれらの末端がアルキル基やスルホン酸基等で置換されているものも、電子輸送材料として好ましく用いることができる。また、発光層の材料として例示したジスチリルピラジン誘導体も、電子輸送材料として用いることができるし、正孔注入層、正孔輸送層と同様にn型−Si、n型−SiC等の無機半導体も電子輸送材料として用いることができる。 In addition, metal-free or metal phthalocyanine, or those having terminal ends substituted with an alkyl group or a sulfonic acid group can be preferably used as the electron transporting material. In addition, the distyrylpyrazine derivative exemplified as the material of the light emitting layer can also be used as an electron transport material, and an inorganic semiconductor such as n-type-Si, n-type-SiC, etc. as in the case of the hole injection layer and hole transport layer Can also be used as an electron transporting material.
電子輸送層は上記電子輸送材料を、例えば、真空蒸着法、スピンコート法、キャスト法、インクジェット法を含む印刷法、LB法等の公知の方法により、薄膜化することにより形成することができる。 The electron transport layer can be formed by thinning the electron transport material by a known method such as a vacuum deposition method, a spin coating method, a casting method, a printing method including an ink jet method, or an LB method.
電子輸送層の膜厚については特に制限はないが、通常は5nm〜5μm程度、好ましくは5nm〜200nmである。電子輸送層は上記材料の1種または2種以上からなる一層構造であってもよい。 Although there is no restriction | limiting in particular about the film thickness of an electron carrying layer, Usually, 5 nm-about 5 micrometers, Preferably it is 5 nm-200 nm. The electron transport layer may have a single layer structure composed of one or more of the above materials.
また、不純物をドープしたn性の高い電子輸送層を用いることもできる。その例としては、特開平4−297076号公報、同10−270172号公報、特開2000−196140号公報、同2001−102175号公報、J.Appl.Phys.,95,5773(2004)等に記載されたものが挙げられる。 Further, an electron transport layer having a high n property doped with impurities can also be used. Examples thereof include JP-A-4-297076, JP-A-10-270172, JP-A-2000-196140, 2001-102175, J.A. Appl. Phys. 95, 5773 (2004), and the like.
本発明においては、このようなn性の高い電子輸送層を用いることがより低消費電力の素子を作製することができるため好ましい。 In the present invention, it is preferable to use an electron transport layer having such a high n property because an element with lower power consumption can be manufactured.
《陽極》
有機EL素子における陽極としては、仕事関数の大きい(4eV以上)金属、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが好ましく用いられる。"anode"
As the anode in the organic EL element, an electrode material made of a metal, an alloy, an electrically conductive compound, or a mixture thereof having a high work function (4 eV or more) is preferably used.
このような電極物質の具体例としては、Au等の金属、CuI、インジウムチンオキシド(ITO)、SnO2、ZnO等の導電性透明材料が挙げられる。Specific examples of such electrode materials include metals such as Au, and conductive transparent materials such as CuI, indium tin oxide (ITO), SnO 2 , and ZnO.
また、IDIXO(In2O3−ZnO)等非晶質で透明導電膜を作製可能な材料を用いてもよい。陽極はこれらの電極物質を蒸着やスパッタリング等の方法により薄膜を形成させ、フォトリソグラフィー法で所望の形状のパターンを形成してもよく、あるいはパターン精度をあまり必要としない場合は(100μm以上程度)、上記電極物質の蒸着やスパッタリング時に所望の形状のマスクを介してパターンを形成してもよい。Alternatively, an amorphous material such as IDIXO (In 2 O 3 —ZnO) capable of forming a transparent conductive film may be used. For the anode, these electrode materials may be formed into a thin film by a method such as vapor deposition or sputtering, and a pattern having a desired shape may be formed by a photolithography method. A pattern may be formed through a mask having a desired shape at the time of vapor deposition or sputtering of the electrode material.
あるいは、有機導電性化合物のように塗布可能な物質を用いる場合には、印刷方式、コーティング方式等湿式成膜法を用いることもできる。 Or when using the substance which can be apply | coated like an organic electroconductivity compound, wet film-forming methods, such as a printing system and a coating system, can also be used.
この陽極より発光を取り出す場合には、透過率を10%より大きくすることが望ましく、また陽極としてのシート抵抗は数百Ω/□以下が好ましい。更に膜厚は材料にもよるが、通常10nm〜1000nm、好ましくは10nm〜200nmの範囲で選ばれる。 When light emission is extracted from the anode, it is desirable that the transmittance be greater than 10%, and the sheet resistance as the anode is preferably several hundred Ω / □ or less. Further, although the film thickness depends on the material, it is usually selected in the range of 10 nm to 1000 nm, preferably 10 nm to 200 nm.
《陰極》
一方、陰極としては仕事関数の小さい(4eV以下)金属(電子注入性金属と称する)、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが用いられる。このような電極物質の具体例としては、ナトリウム、ナトリウム−カリウム合金、マグネシウム、リチウム、マグネシウム/銅混合物、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、インジウム、リチウム/アルミニウム混合物、希土類金属等が挙げられる。"cathode"
On the other hand, as the cathode, a material having a low work function (4 eV or less) metal (referred to as an electron injecting metal), an alloy, an electrically conductive compound, and a mixture thereof as an electrode material is used. Specific examples of such electrode materials include sodium, sodium-potassium alloy, magnesium, lithium, magnesium / copper mixture, magnesium / silver mixture, magnesium / aluminum mixture, magnesium / indium mixture, aluminum / aluminum oxide (Al 2 O 3 ) Mixtures, indium, lithium / aluminum mixtures, rare earth metals and the like.
これらの中で、電子注入性及び酸化等に対する耐久性の点から、電子注入性金属とこれより仕事関数の値が大きく安定な金属である第二金属との混合物、例えば、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、リチウム/アルミニウム混合物、アルミニウム等が好適である。陰極はこれらの電極物質を蒸着やスパッタリング等の方法により薄膜を形成させることにより、作製することができる。Among these, from the point of durability against electron injection and oxidation, etc., a mixture of an electron injecting metal and a second metal which is a stable metal having a larger work function than this, for example, a magnesium / silver mixture, Magnesium / aluminum mixtures, magnesium / indium mixtures, aluminum / aluminum oxide (Al 2 O 3 ) mixtures, lithium / aluminum mixtures, aluminum and the like are preferred. The cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
また、陰極としてのシート抵抗は数百Ω/□以下が好ましく、膜厚は通常10nm〜5μm、好ましくは50nm〜200nmの範囲で選ばれる。尚、発光した光を透過させるため、有機EL素子の陽極または陰極のいずれか一方が透明または半透明であれば発光輝度が向上し好都合である。 The sheet resistance as a cathode is preferably several hundred Ω / □ or less, and the film thickness is usually selected in the range of 10 nm to 5 μm, preferably 50 nm to 200 nm. In order to transmit the emitted light, if either one of the anode or the cathode of the organic EL element is transparent or translucent, the light emission luminance is improved, which is convenient.
また、陰極に上記金属を1nm〜20nmの膜厚で作製した後に、陽極の説明で挙げた導電性透明材料をその上に作製することで、透明または半透明の陰極を作製することができ、これを応用することで陽極と陰極の両方が透過性を有する素子を作製することができる。 Moreover, after producing the said metal by the film thickness of 1 nm-20 nm to a cathode, the transparent or semi-transparent cathode can be produced by producing the electroconductive transparent material quoted by description of the anode on it, By applying this, an element in which both the anode and the cathode are transmissive can be manufactured.
《支持基板》
本発明の有機EL素子に用いることのできる支持基板(以下、基体、基板、基材、支持体等とも言う)としては、ガラス、プラスチック等の種類には特に限定はなく、また透明であっても不透明であってもよい。支持基板側から光を取り出す場合には、支持基板は透明であることが好ましい。《Support substrate》
As a support substrate (hereinafter also referred to as a substrate, substrate, substrate, support, etc.) that can be used in the organic EL device of the present invention, there is no particular limitation on the type of glass, plastic, etc., and it is transparent. May be opaque. When extracting light from the support substrate side, the support substrate is preferably transparent.
好ましく用いられる透明な支持基板としては、ガラス、石英、透明樹脂フィルムを挙げることができる。特に好ましい支持基板は、有機EL素子にフレキシブル性を与えることが可能な樹脂フィルムである。 Examples of the transparent support substrate preferably used include glass, quartz, and a transparent resin film. A particularly preferable support substrate is a resin film capable of giving flexibility to the organic EL element.
樹脂フィルムとしては、例えば、ポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)等のポリエステル、ポリエチレン、ポリプロピレン、セロファン、セルロースジアセテート、セルローストリアセテート、セルロースアセテートブチレート、セルロースアセテートプロピオネート(CAP)、セルロースアセテートフタレート(TAC)、セルロースナイトレート等のセルロースエステル類またはそれらの誘導体、ポリ塩化ビニリデン、ポリビニルアルコール、ポリエチレンビニルアルコール、シンジオタクティックポリスチレン、ポリカーボネート、ノルボルネン樹脂、ポリメチルペンテン、ポリエーテルケトン、ポリイミド、ポリエーテルスルホン(PES)、ポリフェニレンスルフィド、ポリスルホン類、ポリエーテルイミド、ポリエーテルケトンイミド、ポリアミド、フッ素樹脂、ナイロン、ポリメチルメタクリレート、アクリルあるいはポリアリレート類、アートン(商品名JSR社製)あるいはアペル(商品名三井化学社製)といったシクロオレフィン系樹脂等を挙げられる。 Examples of the resin film include polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene, polypropylene, cellophane, cellulose diacetate, cellulose triacetate, cellulose acetate butyrate, cellulose acetate propionate (CAP), Cellulose esters such as cellulose acetate phthalate (TAC) and cellulose nitrate or derivatives thereof, polyvinylidene chloride, polyvinyl alcohol, polyethylene vinyl alcohol, syndiotactic polystyrene, polycarbonate, norbornene resin, polymethylpentene, polyether ketone, polyimide , Polyethersulfone (PES), polyphenylene sulfide, polysulfones Cycloolefin resins such as polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate, acrylic or polyarylate, Arton (trade name, manufactured by JSR) or Appel (trade name, manufactured by Mitsui Chemicals) Can be mentioned.
樹脂フィルムの表面には、無機物、有機物の被膜またはその両者のハイブリッド被膜が形成されていてもよく、JIS K 7129−1992に準拠した方法で測定された、水蒸気透過度(25±0.5℃、相対湿度(90±2)%RH)が0.01g/(m2・24h)以下のバリア性フィルムであることが好ましく、更には、JIS K 7126−1987に準拠した方法で測定された酸素透過度が、10−3ml/(m2・24h・MPa)以下、水蒸気透過度が、10−5g/(m2・24h)以下の高バリア性フィルムであることが好ましい。On the surface of the resin film, an inorganic film, an organic film, or a hybrid film of both may be formed. Water vapor permeability (25 ± 0.5 ° C.) measured by a method according to JIS K 7129-1992. , Relative humidity (90 ± 2)% RH) is preferably 0.01 g / (m 2 · 24 h) or less, and further, oxygen measured by a method according to JIS K 7126-1987. A high barrier film having a permeability of 10 −3 ml / (m 2 · 24 h · MPa) or less and a water vapor permeability of 10 −5 g / (m 2 · 24 h) or less is preferable.
バリア膜を形成する材料としては、水分や酸素等素子の劣化をもたらすものの浸入を抑制する機能を有する材料であればよく、例えば、酸化珪素、二酸化珪素、窒化珪素等を用いることができる。更に該膜の脆弱性を改良するために、これら無機層と有機材料からなる層の積層構造を持たせることがより好ましい。 As a material for forming the barrier film, any material may be used as long as it has a function of suppressing entry of elements that cause deterioration of elements such as moisture and oxygen. For example, silicon oxide, silicon dioxide, silicon nitride, or the like can be used. Further, in order to improve the brittleness of the film, it is more preferable to have a laminated structure of these inorganic layers and organic material layers.
無機層と有機層の積層順については特に制限はないが、両者を交互に複数回積層させることが好ましい。 Although there is no restriction | limiting in particular about the lamination | stacking order of an inorganic layer and an organic layer, It is preferable to laminate | stack both alternately several times.
バリア膜の形成方法については特に限定はなく、例えば、真空蒸着法、スパッタリング法、反応性スパッタリング法、分子線エピタキシー法、クラスタ−イオンビーム法、イオンプレーティング法、プラズマ重合法、大気圧プラズマ重合法、プラズマCVD法、レーザCVD法、熱CVD法、コーティング法等を用いることができるが、特開2004−68143号公報に記載されているような大気圧プラズマ重合法によるものが特に好ましい。 The method for forming the barrier film is not particularly limited. For example, the vacuum deposition method, sputtering method, reactive sputtering method, molecular beam epitaxy method, cluster ion beam method, ion plating method, plasma polymerization method, atmospheric pressure plasma weight A combination method, a plasma CVD method, a laser CVD method, a thermal CVD method, a coating method, and the like can be used. However, an atmospheric pressure plasma polymerization method as described in JP-A-2004-68143 is particularly preferable.
不透明な支持基板としては、例えば、アルミ、ステンレス等の金属板、フィルムや不透明樹脂基板、セラミック製の基板等が挙げられる。 Examples of the opaque support substrate include metal plates such as aluminum and stainless steel, films, opaque resin substrates, and ceramic substrates.
本発明の有機EL素子の発光の室温における外部取り出し効率は、1%以上であることが好ましく、より好ましくは5%以上である。 The external extraction efficiency at room temperature of light emission of the organic EL device of the present invention is preferably 1% or more, more preferably 5% or more.
ここに、外部取り出し量子効率(%)=有機EL素子外部に発光した光子数/有機EL素子に流した電子数×100である。 Here, the external extraction quantum efficiency (%) = the number of photons emitted to the outside of the organic EL element / the number of electrons sent to the organic EL element × 100.
また、カラーフィルター等の色相改良フィルター等を併用しても、有機EL素子からの発光色を蛍光体を用いて多色へ変換する色変換フィルターを併用してもよい。色変換フィルターを用いる場合においては、有機EL素子の発光のλmaxは480nm以下が好ましい。 In addition, a hue improvement filter such as a color filter may be used in combination, or a color conversion filter that converts the emission color from the organic EL element into multiple colors using a phosphor. In the case of using a color conversion filter, the λmax of light emission of the organic EL element is preferably 480 nm or less.
《封止》
本発明に用いられる封止手段としては、例えば、封止部材と電極、支持基板とを接着剤で接着する方法を挙げることができる。<Sealing>
As a sealing means used for this invention, the method of adhere | attaching a sealing member, an electrode, and a support substrate with an adhesive agent can be mentioned, for example.
封止部材としては、有機EL素子の表示領域を覆うように配置されておればよく、凹板状でも平板状でもよい。また透明性、電気絶縁性は特に問わない。 As a sealing member, it should just be arrange | positioned so that the display area | region of an organic EL element may be covered, and concave plate shape or flat plate shape may be sufficient. Further, transparency and electrical insulation are not particularly limited.
具体的には、ガラス板、ポリマー板・フィルム、金属板・フィルム等が挙げられる。ガラス板としては、特にソーダ石灰ガラス、バリウム・ストロンチウム含有ガラス、鉛ガラス、アルミノケイ酸ガラス、ホウケイ酸ガラス、バリウムホウケイ酸ガラス、石英等を挙げることができる。また、ポリマー板としては、ポリカーボネート、アクリル、ポリエチレンテレフタレート、ポリエーテルサルファイド、ポリサルフォン等を挙げることができる。金属板としては、ステンレス、鉄、銅、アルミニウム、マグネシウム、ニッケル、亜鉛、クロム、チタン、モリブテン、シリコン、ゲルマニウム及びタンタルからなる群から選ばれる一種以上の金属または合金からなるものが挙げられる。 Specific examples include a glass plate, a polymer plate / film, and a metal plate / film. Examples of the glass plate include soda-lime glass, barium / strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, and quartz. Examples of the polymer plate include polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide, and polysulfone. Examples of the metal plate include those made of one or more metals or alloys selected from the group consisting of stainless steel, iron, copper, aluminum, magnesium, nickel, zinc, chromium, titanium, molybdenum, silicon, germanium, and tantalum.
本発明においては、素子を薄膜化できるということからポリマーフィルム、金属フィルムを好ましく使用することができる。更には、ポリマーフィルムは、JIS K 7126−1987に準拠した方法で測定された酸素透過度が1×10−3ml/(m2・24h・MPa)以下、JIS K 7129−1992に準拠した方法で測定された、水蒸気透過度(25±0.5℃、相対湿度(90±2)%RH)が1×10−3g/(m2・24h)以下のものであることが好ましい。In the present invention, a polymer film and a metal film can be preferably used because the element can be thinned. Furthermore, the polymer film has a oxygen permeability measured by a method according to JIS K 7126-1987 of 1 × 10 −3 ml / (m 2 · 24 h · MPa) or less, and a method according to JIS K 7129-1992. It is preferable that the water vapor permeability (25 ± 0.5 ° C., relative humidity (90 ± 2)% RH) measured in (1) is 1 × 10 −3 g / (m 2 · 24 h) or less.
封止部材を凹状に加工するのは、サンドブラスト加工、化学エッチング加工等が使われる。 For processing the sealing member into a concave shape, sandblasting, chemical etching, or the like is used.
接着剤として具体的には、アクリル酸系オリゴマー、メタクリル酸系オリゴマーの反応性ビニル基を有する光硬化及び熱硬化型接着剤、2−シアノアクリル酸エステル等の湿気硬化型等の接着剤を挙げることができる。 Specific examples of the adhesive include photocuring and thermosetting adhesives having reactive vinyl groups such as acrylic acid oligomers and methacrylic acid oligomers, and moisture curing adhesives such as 2-cyanoacrylates. be able to.
また、エポキシ系等の熱及び化学硬化型(二液混合)を挙げることができる。また、ホットメルト型のポリアミド、ポリエステル、ポリオレフィンを挙げることができる。また、カチオン硬化タイプの紫外線硬化型エポキシ樹脂接着剤を挙げることができる。 Moreover, heat | fever and chemical curing types (two-component mixing), such as an epoxy type, can be mentioned. Moreover, hot-melt type polyamide, polyester, and polyolefin can be mentioned. Moreover, a cationic curing type ultraviolet curing epoxy resin adhesive can be mentioned.
なお、有機EL素子が熱処理により劣化する場合があるので、室温から80℃までに接着硬化できるものが好ましい。また、前記接着剤中に乾燥剤を分散させておいてもよい。封止部分への接着剤の塗布は市販のディスペンサーを使ってもよいし、スクリーン印刷のように印刷してもよい。 In addition, since an organic EL element may deteriorate by heat processing, what can be adhesive-hardened from room temperature to 80 degreeC is preferable. A desiccant may be dispersed in the adhesive. Application | coating of the adhesive agent to a sealing part may use commercially available dispenser, and may print like screen printing.
また、有機層を挟み支持基板と対向する側の電極の外側に該電極と有機層を被覆し、支持基板と接する形で無機物、有機物の層を形成し封止膜とすることも好適にできる。この場合、該膜を形成する材料としては、水分や酸素等素子の劣化をもたらすものの浸入を抑制する機能を有する材料であればよく、例えば、酸化珪素、二酸化珪素、窒化珪素等を用いることができる。更に該膜の脆弱性を改良するために、これら無機層と有機材料からなる層の積層構造を持たせることが好ましい。 In addition, it is also preferable that the electrode and the organic layer are coated on the outside of the electrode facing the support substrate with the organic layer interposed therebetween, and an inorganic or organic layer is formed in contact with the support substrate to form a sealing film. . In this case, the material for forming the film may be any material that has a function of suppressing intrusion of elements that cause deterioration of elements such as moisture and oxygen. For example, silicon oxide, silicon dioxide, silicon nitride, or the like may be used. it can. Further, in order to improve the brittleness of the film, it is preferable to have a laminated structure of these inorganic layers and layers made of organic materials.
これらの膜の形成方法については、特に限定はなく、例えば真空蒸着法、スパッタリング法、反応性スパッタリング法、分子線エピタキシー法、クラスタ−イオンビーム法、イオンプレーティング法、プラズマ重合法、大気圧プラズマ重合法、プラズマCVD法、レーザCVD法、熱CVD法、コーティング法等を用いることができる。 The method for forming these films is not particularly limited. For example, vacuum deposition, sputtering, reactive sputtering, molecular beam epitaxy, cluster-ion beam method, ion plating method, plasma polymerization method, atmospheric pressure plasma A polymerization method, a plasma CVD method, a laser CVD method, a thermal CVD method, a coating method, or the like can be used.
封止部材と有機EL素子の表示領域との間隙には、気相及び液相では、窒素、アルゴン等の不活性気体やフッ化炭化水素、シリコンオイルのような不活性液体を注入することが好ましい。また真空とすることも可能である。また、内部に吸湿性化合物を封入することもできる。 In the gap between the sealing member and the display area of the organic EL element, an inert gas such as nitrogen or argon, or an inert liquid such as fluorinated hydrocarbon or silicon oil can be injected in the gas phase and liquid phase. preferable. A vacuum is also possible. Moreover, a hygroscopic compound can also be enclosed inside.
吸湿性化合物としては、例えば、金属酸化物(例えば、酸化ナトリウム、酸化カリウム、酸化カルシウム、酸化バリウム、酸化マグネシウム、酸化アルミニウム等)、硫酸塩(例えば、硫酸ナトリウム、硫酸カルシウム、硫酸マグネシウム、硫酸コバルト等)、金属ハロゲン化物(例えば、塩化カルシウム、塩化マグネシウム、フッ化セシウム、フッ化タンタル、臭化セリウム、臭化マグネシウム、沃化バリウム、沃化マグネシウム等)、過塩素酸類(例えば、過塩素酸バリウム、過塩素酸マグネシウム等)等が挙げられ、硫酸塩、金属ハロゲン化物及び過塩素酸類においては無水塩が好適に用いられる。 Examples of the hygroscopic compound include metal oxides (for example, sodium oxide, potassium oxide, calcium oxide, barium oxide, magnesium oxide, aluminum oxide) and sulfates (for example, sodium sulfate, calcium sulfate, magnesium sulfate, cobalt sulfate). Etc.), metal halides (eg calcium chloride, magnesium chloride, cesium fluoride, tantalum fluoride, cerium bromide, magnesium bromide, barium iodide, magnesium iodide etc.), perchloric acids (eg perchloric acid) Barium, magnesium perchlorate, and the like), and anhydrous salts are preferably used in sulfates, metal halides, and perchloric acids.
《保護膜、保護板》
有機層を挟み支持基板と対向する側の前記封止膜、あるいは前記封止用フィルムの外側に、素子の機械的強度を高めるために保護膜、あるいは保護板を設けてもよい。《Protective film, protective plate》
In order to increase the mechanical strength of the element, a protective film or a protective plate may be provided on the outer side of the sealing film on the side facing the support substrate with the organic layer interposed therebetween or on the sealing film.
特に封止が前記封止膜により行われている場合には、その機械的強度は必ずしも高くないため、このような保護膜、保護板を設けることが好ましい。これに使用することができる材料としては、前記封止に用いたのと同様なガラス板、ポリマー板・フィルム、金属板・フィルム等を用いることができるが、軽量、且つ、薄膜化ということからポリマーフィルムを用いることが好ましい。 In particular, when the sealing is performed by the sealing film, the mechanical strength is not necessarily high, and thus it is preferable to provide such a protective film and a protective plate. As a material that can be used for this, the same glass plate, polymer plate / film, metal plate / film, etc. used for the sealing can be used, but it is lightweight and thin. It is preferable to use a polymer film.
《光取り出し》
有機EL素子は空気よりも屈折率の高い(屈折率が1.7〜2.1程度)層の内部で発光し、発光層で発生した光のうち15%から20%程度の光しか取り出せないことが一般的に言われている。《Light extraction》
The organic EL element emits light inside a layer having a refractive index higher than that of air (refractive index is about 1.7 to 2.1) and can extract only about 15% to 20% of the light generated in the light emitting layer. It is generally said.
これは、臨界角以上の角度θで界面(透明基板と空気との界面)に入射する光は、全反射を起こし素子外部に取り出すことができないことや、透明電極ないし発光層と透明基板との間で光が全反射を起こし、光が透明電極ないし発光層を導波し、結果として光が素子側面方向に逃げるためである。 This is because light incident on the interface (interface between the transparent substrate and air) at an angle θ greater than the critical angle causes total reflection and cannot be taken out of the device, or between the transparent electrode or light emitting layer and the transparent substrate. This is because the light is totally reflected between the light and the light is guided through the transparent electrode or the light emitting layer, and as a result, the light escapes in the direction of the element side surface.
この光の取り出しの効率を向上させる手法としては、例えば、透明基板表面に凹凸を形成し、透明基板と空気界面での全反射を防ぐ方法(米国特許第4,774,435号明細書)、基板に集光性を持たせることにより効率を向上させる方法(特開昭63−314795号公報)、素子の側面等に反射面を形成する方法(特開平1−220394号公報)、基板と発光体の間に中間の屈折率を持つ平坦層を導入し、反射防止膜を形成する方法(特開昭62−172691号公報)、基板と発光体の間に基板よりも低屈折率を持つ平坦層を導入する方法(特開2001−202827号公報)、基板、透明電極層や発光層のいずれかの層間(含む、基板と外界間)に回折格子を形成する方法(特開平11−283751号公報)等がある。 As a method for improving the light extraction efficiency, for example, a method of forming irregularities on the surface of the transparent substrate to prevent total reflection at the interface between the transparent substrate and the air (US Pat. No. 4,774,435), A method of improving efficiency by providing a light collecting property to a substrate (Japanese Patent Laid-Open No. 63-314795), a method of forming a reflective surface on a side surface of an element (Japanese Patent Laid-Open No. 1-220394), and light emission from a substrate A method of forming an antireflection film by introducing a flat layer having an intermediate refractive index between the bodies (Japanese Patent Laid-Open No. 62-172691), a flat having a lower refractive index between the substrate and the light emitter than the substrate A method of introducing a layer (Japanese Patent Laid-Open No. 2001-202827), a method of forming a diffraction grating between any one of a substrate, a transparent electrode layer and a light emitting layer (including between the substrate and the outside) (Japanese Patent Laid-Open No. 11-283951) Gazette).
本発明においては、これらの方法を本発明の有機EL素子と組み合わせて用いることができるが、基板と発光体の間に基板よりも低屈折率を持つ平坦層を導入する方法、あるいは基板、透明電極層や発光層のいずれかの層間(含む、基板と外界間)に回折格子を形成する方法を好適に用いることができる。 In the present invention, these methods can be used in combination with the organic EL device of the present invention. However, a method of introducing a flat layer having a lower refractive index than the substrate between the substrate and the light emitter, or a substrate, transparent A method of forming a diffraction grating between any layers of the electrode layer and the light emitting layer (including between the substrate and the outside) can be suitably used.
本発明はこれらの手段を組み合わせることにより、更に高輝度あるいは耐久性に優れた素子を得ることができる。 In the present invention, by combining these means, it is possible to obtain an element having higher luminance or durability.
透明電極と透明基板の間に低屈折率の媒質を光の波長よりも長い厚みで形成すると、透明電極から出てきた光は、媒質の屈折率が低いほど外部への取り出し効率が高くなる。 When a medium having a low refractive index is formed between the transparent electrode and the transparent substrate with a thickness longer than the wavelength of light, the light extracted from the transparent electrode has a higher extraction efficiency to the outside as the refractive index of the medium is lower.
低屈折率層としては、例えば、エアロゲル、多孔質シリカ、フッ化マグネシウム、フッ素系ポリマー等が挙げられる。透明基板の屈折率は一般に1.5〜1.7程度であるので、低屈折率層は屈折率がおよそ1.5以下であることが好ましい。また、更に1.35以下であることが好ましい。 Examples of the low refractive index layer include aerogel, porous silica, magnesium fluoride, and a fluorine-based polymer. Since the refractive index of the transparent substrate is generally about 1.5 to 1.7, the low refractive index layer preferably has a refractive index of about 1.5 or less. Further, it is preferably 1.35 or less.
また、低屈折率媒質の厚みは媒質中の波長の2倍以上となるのが望ましい。これは低屈折率媒質の厚みが、光の波長程度になってエバネッセントで染み出した電磁波が基板内に入り込む膜厚になると、低屈折率層の効果が薄れるからである。 The thickness of the low refractive index medium is preferably at least twice the wavelength in the medium. This is because the effect of the low refractive index layer is diminished when the thickness of the low refractive index medium is about the wavelength of light and the electromagnetic wave that has exuded by evanescent enters the substrate.
全反射を起こす界面もしくはいずれかの媒質中に回折格子を導入する方法は、光取り出し効率の向上効果が高いという特徴がある。 The method of introducing a diffraction grating into an interface or any medium that causes total reflection is characterized by a high effect of improving light extraction efficiency.
この方法は回折格子が1次の回折や2次の回折といった所謂ブラッグ回折により、光の向きを屈折とは異なる特定の向きに変えることができる性質を利用して、発光層から発生した光のうち層間での全反射等により外に出ることができない光を、いずれかの層間もしくは、媒質中(透明基板内や透明電極内)に回折格子を導入することで光を回折させ、光を外に取り出そうとするものである。 This method uses the property that the diffraction grating can change the direction of light to a specific direction different from refraction by so-called Bragg diffraction such as first-order diffraction and second-order diffraction. Light that cannot be emitted due to total internal reflection between layers is diffracted by introducing a diffraction grating in any layer or medium (in a transparent substrate or transparent electrode), and the light is removed. I want to take it out.
導入する回折格子は、二次元的な周期屈折率を持っていることが望ましい。これは発光層で発光する光はあらゆる方向にランダムに発生するので、ある方向にのみ周期的な屈折率分布を持っている一般的な1次元回折格子では、特定の方向に進む光しか回折されず、光の取り出し効率がさほど上がらない。 The introduced diffraction grating desirably has a two-dimensional periodic refractive index. This is because light emitted from the light-emitting layer is randomly generated in all directions, so in a general one-dimensional diffraction grating having a periodic refractive index distribution only in a certain direction, only light traveling in a specific direction is diffracted. Therefore, the light extraction efficiency does not increase so much.
しかしながら、屈折率分布を二次元的な分布にすることにより、あらゆる方向に進む光が回折され、光の取り出し効率が上がる。 However, by making the refractive index distribution a two-dimensional distribution, light traveling in all directions is diffracted, and light extraction efficiency is increased.
回折格子を導入する位置としては前述の通り、いずれかの層間もしくは媒質中(透明基板内や透明電極内)でもよいが、光が発生する場所である有機発光層の近傍が望ましい。 As described above, the position where the diffraction grating is introduced may be in any of the layers or in the medium (in the transparent substrate or in the transparent electrode), but is preferably in the vicinity of the organic light emitting layer where light is generated.
このとき、回折格子の周期は媒質中の光の波長の約1/2〜3倍程度が好ましい。 At this time, the period of the diffraction grating is preferably about 1/2 to 3 times the wavelength of light in the medium.
回折格子の配列は正方形のラチス状、三角形のラチス状、ハニカムラチス状等、2次元的に配列が繰り返されることが好ましい。 The arrangement of the diffraction grating is preferably two-dimensionally repeated such as a square lattice, a triangular lattice, or a honeycomb lattice.
《集光シート》
本発明の有機EL素子は基板の光取り出し側に、例えば、マイクロレンズアレイ状の構造を設けるように加工する、あるいは所謂集光シートと組み合わせることにより、特定方向、例えば、素子発光面に対し正面方向に集光することにより、特定方向上の輝度を高めることができる。<Condenser sheet>
The organic EL element of the present invention is processed to provide, for example, a microlens array-like structure on the light extraction side of the substrate, or in combination with a so-called condensing sheet, so that the organic EL element is in front of the element light emitting surface. By condensing in the direction, the luminance in a specific direction can be increased.
マイクロレンズアレイの例としては、基板の光取り出し側に一辺が30μmでその頂角が90度となるような四角錐を2次元に配列する。一辺は10μm〜100μmが好ましい。これより小さくなると回折の効果が発生して色付く、大きすぎると厚みが厚くなり好ましくない。 As an example of the microlens array, quadrangular pyramids having a side of 30 μm and an apex angle of 90 degrees are two-dimensionally arranged on the light extraction side of the substrate. One side is preferably 10 μm to 100 μm. If it becomes smaller than this, the effect of diffraction will generate | occur | produce and color, and if too large, thickness will become thick and is not preferable.
集光シートとしては、例えば、液晶表示装置のLEDバックライトで実用化されているものを用いることが可能である。このようなシートとして、例えば、住友スリーエム社製輝度上昇フィルム(BEF)等を用いることができる。プリズムシートの形状としては、例えば、基材に頂角90度、ピッチ50μmの△状のストライプが形成されたものであってもよいし、頂角が丸みを帯びた形状、ピッチをランダムに変化させた形状、その他の形状であってもよい。 As the condensing sheet, for example, a sheet that is put into practical use in an LED backlight of a liquid crystal display device can be used. As such a sheet, for example, a brightness enhancement film (BEF) manufactured by Sumitomo 3M Limited can be used. As the shape of the prism sheet, for example, the base material may be formed by forming a △ -shaped stripe having a vertex angle of 90 degrees and a pitch of 50 μm, or the vertex angle is rounded and the pitch is changed randomly. Other shapes may be used.
また、発光素子からの光放射角を制御するために、光拡散板・フィルムを集光シートと併用してもよい。例えば、(株)きもと製拡散フィルム(ライトアップ)等を用いることができる。 Moreover, in order to control the light emission angle from a light emitting element, you may use together a light diffusing plate and a film with a condensing sheet. For example, a diffusion film (light-up) manufactured by Kimoto Co., Ltd. can be used.
《有機EL素子の作製方法》
本発明の有機EL素子の作製方法の一例として、陽極/正孔注入層/正孔輸送層/発光層/正孔阻止層/電子輸送層/電子注入層/陰極からなる有機EL素子の作製法を説明する。<< Method for producing organic EL element >>
As an example of the method for producing the organic EL device of the present invention, a method for producing an organic EL device comprising an anode / hole injection layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / electron injection layer / cathode Will be explained.
まず適当な基体上に所望の電極物質、例えば、陽極用物質からなる薄膜を1μm以下、好ましくは10nm〜200nmの膜厚になるように、蒸着やスパッタリング等の方法により形成させ陽極を作製する。 First, a desired electrode material, for example, a thin film made of an anode material is formed on a suitable substrate so as to have a film thickness of 1 μm or less, preferably 10 nm to 200 nm, to form an anode.
次に、この上に有機EL素子材料である正孔注入層、正孔輸送層、発光層、正孔阻止層、電子輸送層、電子注入層の有機化合物薄膜を形成させる。 Next, an organic compound thin film of a hole injection layer, a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, which are organic EL element materials, is formed thereon.
これら各層の形成方法としては、前記の如く蒸着法、ウェットプロセス(スピンコート法、キャスト法、インクジェット法、印刷法)等があるが、均質な膜が得られやすく、且つ、ピンホールが生成しにくい等の点から、本発明においてはスピンコート法、インクジェット法、印刷法等の塗布法による成膜が好ましい。 As a method for forming each of these layers, there are a vapor deposition method and a wet process (spin coating method, casting method, ink jet method, printing method) as described above, but it is easy to obtain a uniform film and a pinhole is generated. In view of difficulty, etc., film formation by a coating method such as a spin coating method, an ink jet method, or a printing method is preferable in the present invention.
特に、本発明に係るカルバゾール環を部分構造として有する化合物、重合性基を有する該化合物、前記化合物の重合体を含有する層は、上記の塗布法により形成されることが好ましく、更に、該層が発光層であることが好ましい。 In particular, the layer containing a compound having a carbazole ring as a partial structure according to the present invention, the compound having a polymerizable group, and a polymer of the compound is preferably formed by the above-described coating method. Is preferably a light emitting layer.
また、陽極と陰極の間に存在する層(有機EL素子の構成層である)の全層数を100%とした時、該全層数の50%以上が塗布法で形成されることが好ましい。 Further, when the total number of layers (the constituent layers of the organic EL element) existing between the anode and the cathode is 100%, 50% or more of the total number of layers is preferably formed by a coating method. .
例えば、上記の有機EL素子の一例として挙げられた、陽極/正孔注入層/正孔輸送層/発光層/正孔阻止層/電子輸送層/電子注入層/陰極においては、正孔注入層/正孔輸送層/発光層/正孔阻止層/電子輸送層/電子注入層という全層数が6の場合には、少なくとも3層が塗布法により形成されることが好ましい。 For example, in the anode / hole injection layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / electron injection layer / cathode mentioned as an example of the organic EL element, the hole injection layer In the case where the total number of layers / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / electron injection layer is 6, it is preferable that at least three layers are formed by a coating method.
本発明の有機EL素子の構成層を塗布により形成する場合、塗布に用いる各種の有機EL材料を溶解または分散する液媒体としては、例えば、メチルエチルケトン、シクロヘキサノン等のケトン類、酢酸エチル等の脂肪酸エステル類、ジクロロベンゼン等のハロゲン化炭化水素類、トルエン、キシレン、メシチレン、シクロヘキシルベンゼン等の芳香族炭化水素類、シクロヘキサン、デカリン、ドデカン等の脂肪族炭化水素類、DMF、DMSO等の有機溶媒を用いることができる。 When the constituent layers of the organic EL device of the present invention are formed by coating, examples of the liquid medium for dissolving or dispersing various organic EL materials used for coating include ketones such as methyl ethyl ketone and cyclohexanone, and fatty acid esters such as ethyl acetate. , Halogenated hydrocarbons such as dichlorobenzene, aromatic hydrocarbons such as toluene, xylene, mesitylene and cyclohexylbenzene, aliphatic hydrocarbons such as cyclohexane, decalin and dodecane, and organic solvents such as DMF and DMSO be able to.
また分散方法としては、超音波、高剪断力分散やメディア分散等の分散方法により分散することができる。 Moreover, as a dispersion method, it can disperse | distribute by dispersion methods, such as an ultrasonic wave, high shear force dispersion | distribution, and media dispersion | distribution.
これらの層を形成後、その上に陰極用物質からなる薄膜を1μm以下、好ましくは、50nm〜200nmの範囲の膜厚になるように、例えば、蒸着やスパッタリング等の方法により形成させ、陰極を設けることにより所望の有機EL素子が得られる。 After these layers are formed, a thin film made of a cathode material is formed thereon by 1 μm or less, preferably by a method such as vapor deposition or sputtering so that the film thickness is in the range of 50 nm to 200 nm. By providing, a desired organic EL element can be obtained.
また作製順序を逆にして、陰極、電子注入層、電子輸送層、正孔阻止層、発光層、正孔輸送層、正孔注入層、陽極の順に作製することも可能である。 Further, it is also possible to reverse the production order and produce the cathode, the electron injection layer, the electron transport layer, the hole blocking layer, the light emitting layer, the hole transport layer, the hole injection layer, and the anode in this order.
このようにして得られた多色の表示装置に、直流電圧を印加する場合には陽極を+、陰極を−の極性として電圧2V〜40V程度を印加すると発光が観測できる。また交流電圧を印加してもよい。なお、印加する交流の波形は任意でよい。 When a DC voltage is applied to the multicolor display device thus obtained, light emission can be observed by applying a voltage of about 2 V to 40 V with the anode as + and the cathode as-. An alternating voltage may be applied. The alternating current waveform to be applied may be arbitrary.
《用途》
本発明の有機EL素子は、表示デバイス、ディスプレイ、各種発光光源として用いることができる。発光光源として、例えば、照明装置(家庭用照明、車内照明)、時計や液晶用バックライト、看板広告、信号機、光記憶媒体の光源、電子写真複写機の光源、光通信処理機の光源、光センサーの光源等が挙げられるがこれに限定するものではないが、特に液晶表示装置のバックライト、照明用光源としての用途に有効に用いることができる。<Application>
The organic EL element of the present invention can be used as a display device, a display, and various light emission sources. For example, lighting devices (home lighting, interior lighting), clock and liquid crystal backlights, billboard advertisements, traffic lights, light sources of optical storage media, light sources of electrophotographic copying machines, light sources of optical communication processors, light Although the light source of a sensor etc. are mentioned, It is not limited to this, Especially, it can use effectively for the use as a backlight of a liquid crystal display device, and a light source for illumination.
本発明の有機EL素子においては、必要に応じ成膜時にメタルマスクやインクジェットプリンティング法等でパターニングを施してもよい。 In the organic EL element of the present invention, patterning may be performed by a metal mask, an ink jet printing method, or the like as needed during film formation.
パターニングする場合は、電極のみをパターニングしてもよいし、電極と発光層をパターニングしてもよいし、素子全層をパターニングしてもよく、素子の作製においては、従来公知の方法を用いることができる。 In the case of patterning, only the electrode may be patterned, the electrode and the light emitting layer may be patterned, or the entire layer of the device may be patterned. Can do.
本発明の有機EL素子や本発明に係る化合物の発光する色は、「新編色彩科学ハンドブック」(日本色彩学会編、東京大学出版会、1985)の108頁の図4.16において、分光放射輝度計CS−1000(コニカミノルタセンシング社製)で測定した結果をCIE色度座標に当てはめたときの色で決定される。 The light emission color of the organic EL device of the present invention and the compound according to the present invention is shown in FIG. 4.16 on page 108 of “New Color Science Handbook” (edited by the Japan Color Society, University of Tokyo Press, 1985). It is determined by the color when the result measured with the total CS-1000 (manufactured by Konica Minolta Sensing) is applied to the CIE chromaticity coordinates.
また、本発明の有機EL素子が白色素子の場合には、白色とは、2度視野角正面輝度を上記方法により測定した際に、1000cd/m2でのCIE1931表色系における色度がX=0.33±0.07、Y=0.33±0.1の領域内にあることを言う。When the organic EL element of the present invention is a white element, white means that the chromaticity in the CIE1931 color system at 1000 cd / m 2 is X when the 2 ° viewing angle front luminance is measured by the above method. = 0.33 ± 0.07 and Y = 0.33 ± 0.1.
《表示装置》
本発明の表示装置について説明する。本発明の表示装置は、本発明の有機EL素子を具備したものである。<Display device>
The display device of the present invention will be described. The display device of the present invention comprises the organic EL element of the present invention.
本発明の表示装置は単色でも多色でもよいが、ここでは多色表示装置について説明する。多色表示装置の場合は発光層形成時のみシャドーマスクを設け、一面に蒸着法、キャスト法、スピンコート法、インクジェット法、印刷法等で膜を形成できる。 Although the display device of the present invention may be single color or multicolor, the multicolor display device will be described here. In the case of a multicolor display device, a shadow mask is provided only at the time of forming a light emitting layer, and a film can be formed on one surface by vapor deposition, casting, spin coating, ink jet, printing, or the like.
発光層のみパターニングを行う場合、その方法に限定はないが、好ましくは蒸着法、インクジェット法、スピンコート法、印刷法である。 In the case of patterning only the light emitting layer, the method is not limited. However, the vapor deposition method, the ink jet method, the spin coating method, and the printing method are preferable.
表示装置に具備される有機EL素子の構成は、必要に応じて上記の有機EL素子の構成例の中から選択される。 The configuration of the organic EL element provided in the display device is selected from the above-described configuration examples of the organic EL element as necessary.
また、有機EL素子の製造方法は、上記の本発明の有機EL素子の製造の一態様に示したとおりである。 Moreover, the manufacturing method of an organic EL element is as having shown to the one aspect | mode of manufacture of the organic EL element of said invention.
得られた多色表示装置に直流電圧を印加する場合には、陽極を+、陰極を−の極性として電圧2V〜40V程度を印加すると発光が観測できる。また、逆の極性で電圧を印加しても電流は流れずに発光は全く生じない。更に交流電圧を印加する場合には、陽極が+、陰極が−の状態になったときのみ発光する。尚、印加する交流の波形は任意でよい。 In the case of applying a DC voltage to the obtained multicolor display device, light emission can be observed by applying a voltage of about 2V to 40V with the positive polarity of the anode and the negative polarity of the cathode. Further, even when a voltage is applied with the opposite polarity, no current flows and no light emission occurs. Further, when an AC voltage is applied, light is emitted only when the anode is in the + state and the cathode is in the-state. The alternating current waveform to be applied may be arbitrary.
多色表示装置は、表示デバイス、ディスプレイ、各種発光光源として用いることができる。表示デバイス、ディスプレイにおいて、青、赤、緑発光の3種の有機EL素子を用いることによりフルカラーの表示が可能となる。 The multicolor display device can be used as a display device, a display, and various light emission sources. In a display device or display, full-color display is possible by using three types of organic EL elements of blue, red, and green light emission.
表示デバイス、ディスプレイとしては、テレビ、パソコン、モバイル機器、AV機器、文字放送表示、自動車内の情報表示等が挙げられる。特に静止画像や動画像を再生する表示装置として使用してもよく、動画再生用の表示装置として使用する場合の駆動方式は単純マトリクス(パッシブマトリクス)方式でもアクティブマトリクス方式でもどちらでもよい。 Examples of the display device and display include a television, a personal computer, a mobile device, an AV device, a character broadcast display, and an information display in an automobile. In particular, it may be used as a display device for reproducing still images and moving images, and the driving method when used as a display device for reproducing moving images may be either a simple matrix (passive matrix) method or an active matrix method.
発光光源としては家庭用照明、車内照明、時計や液晶用のバックライト、看板広告、信号機、光記憶媒体の光源、電子写真複写機の光源、光通信処理機の光源、光センサーの光源等が挙げられるが、本発明はこれらに限定されない。 Light sources include home lighting, interior lighting, clock and liquid crystal backlights, billboard advertisements, traffic lights, light sources for optical storage media, light sources for electrophotographic copying machines, light sources for optical communication processors, light sources for optical sensors, etc. The present invention is not limited to these examples.
以下、本発明の有機EL素子を有する表示装置の一例を図面に基づいて説明する。 Hereinafter, an example of a display device having the organic EL element of the present invention will be described with reference to the drawings.
図1は有機EL素子から構成される表示装置の一例を示した模式図である。有機EL素子の発光により画像情報の表示を行う、例えば、携帯電話等のディスプレイの模式図である。 FIG. 1 is a schematic view showing an example of a display device composed of organic EL elements. It is a schematic diagram of a display such as a mobile phone that displays image information by light emission of an organic EL element.
ディスプレイ1は複数の画素を有する表示部A、画像情報に基づいて表示部Aの画像走査を行う制御部B等からなる。 The display 1 includes a display unit A having a plurality of pixels, a control unit B that performs image scanning of the display unit A based on image information, and the like.
制御部Bは表示部Aと電気的に接続され、複数の画素それぞれに外部からの画像情報に基づいて走査信号と画像データ信号を送り、走査信号により走査線毎の画素が画像データ信号に応じて順次発光して画像走査を行って画像情報を表示部Aに表示する。 The control unit B is electrically connected to the display unit A, and sends a scanning signal and an image data signal to each of a plurality of pixels based on image information from the outside, and the pixels for each scanning line respond to the image data signal by the scanning signal. The image information is sequentially emitted to scan the image and display the image information on the display unit A.
図2は表示部Aの模式図である。 FIG. 2 is a schematic diagram of the display unit A.
表示部Aは基板上に、複数の走査線5及びデータ線6を含む配線部と複数の画素3等とを有する。表示部Aの主要な部材の説明を以下に行う。 The display unit A includes a wiring unit including a plurality of scanning lines 5 and data lines 6, a plurality of pixels 3 and the like on a substrate. The main members of the display unit A will be described below.
図においては、画素3の発光した光が白矢印方向(下方向)へ取り出される場合を示している。 In the figure, the light emitted from the pixel 3 is extracted in the direction of the white arrow (downward).
配線部の走査線5及び複数のデータ線6はそれぞれ導電材料からなり、走査線5とデータ線6は格子状に直交して、直交する位置で画素3に接続している(詳細は図示していない)。 The scanning line 5 and the plurality of data lines 6 in the wiring portion are each made of a conductive material, and the scanning lines 5 and the data lines 6 are orthogonal to each other in a grid pattern and are connected to the pixels 3 at the orthogonal positions (details are illustrated). Not)
画素3は走査線5から走査信号が印加されると、データ線6から画像データ信号を受け取り、受け取った画像データに応じて発光する。 When a scanning signal is applied from the scanning line 5, the pixel 3 receives an image data signal from the data line 6 and emits light according to the received image data.
発光の色が赤領域の画素、緑領域の画素、青領域の画素を適宜同一基板上に並置することによって、フルカラー表示が可能となる。 Full-color display is possible by appropriately arranging pixels in the red region, the green region, and the blue region on the same substrate.
次に、画素の発光プロセスを説明する。 Next, the light emission process of the pixel will be described.
図3は画素の模式図である。 FIG. 3 is a schematic diagram of a pixel.
画素は有機EL素子10、スイッチングトランジスタ11、駆動トランジスタ12、コンデンサ13等を備えている。複数の画素に有機EL素子10として、赤色、緑色、青色発光の有機EL素子を用い、これらを同一基板上に並置することでフルカラー表示を行うことができる。 The pixel includes an organic EL element 10, a switching transistor 11, a driving transistor 12, a capacitor 13, and the like. A full color display can be performed by using red, green, and blue light emitting organic EL elements as the organic EL elements 10 in a plurality of pixels, and juxtaposing them on the same substrate.
図3において、制御部Bからデータ線6を介してスイッチングトランジスタ11のドレインに画像データ信号が印加される。そして、制御部Bから走査線5を介してスイッチングトランジスタ11のゲートに走査信号が印加されると、スイッチングトランジスタ11の駆動がオンし、ドレインに印加された画像データ信号がコンデンサ13と駆動トランジスタ12のゲートに伝達される。 In FIG. 3, an image data signal is applied from the control unit B to the drain of the switching transistor 11 through the data line 6. When a scanning signal is applied from the control unit B to the gate of the switching transistor 11 via the scanning line 5, the driving of the switching transistor 11 is turned on, and the image data signal applied to the drain is supplied to the capacitor 13 and the driving transistor 12. Is transmitted to the gate.
画像データ信号の伝達により、コンデンサ13が画像データ信号の電位に応じて充電されるとともに、駆動トランジスタ12の駆動がオンする。駆動トランジスタ12は、ドレインが電源ライン7に接続され、ソースが有機EL素子10の電極に接続されており、ゲートに印加された画像データ信号の電位に応じて電源ライン7から有機EL素子10に電流が供給される。 By transmitting the image data signal, the capacitor 13 is charged according to the potential of the image data signal, and the drive of the drive transistor 12 is turned on. The drive transistor 12 has a drain connected to the power supply line 7 and a source connected to the electrode of the organic EL element 10, and the power supply line 7 connects to the organic EL element 10 according to the potential of the image data signal applied to the gate. Current is supplied.
制御部Bの順次走査により走査信号が次の走査線5に移ると、スイッチングトランジスタ11の駆動がオフする。しかし、スイッチングトランジスタ11の駆動がオフしてもコンデンサ13は充電された画像データ信号の電位を保持するので、駆動トランジスタ12の駆動はオン状態が保たれて、次の走査信号の印加が行われるまで有機EL素子10の発光が継続する。順次走査により次に走査信号が印加されたとき、走査信号に同期した次の画像データ信号の電位に応じて駆動トランジスタ12が駆動して有機EL素子10が発光する。 When the scanning signal is moved to the next scanning line 5 by the sequential scanning of the control unit B, the driving of the switching transistor 11 is turned off. However, even if the driving of the switching transistor 11 is turned off, the capacitor 13 maintains the potential of the charged image data signal, so that the driving of the driving transistor 12 is kept on and the next scanning signal is applied. Until then, the light emission of the organic EL element 10 continues. When the scanning signal is next applied by sequential scanning, the driving transistor 12 is driven according to the potential of the next image data signal synchronized with the scanning signal, and the organic EL element 10 emits light.
即ち、有機EL素子10の発光は、複数の画素それぞれの有機EL素子10に対して、アクティブ素子であるスイッチングトランジスタ11と駆動トランジスタ12を設けて、複数の画素3それぞれの有機EL素子10の発光を行っている。このような発光方法をアクティブマトリクス方式と呼んでいる。 That is, the light emission of the organic EL element 10 is performed by providing the switching transistor 11 and the drive transistor 12 which are active elements with respect to the organic EL element 10 of each of the plurality of pixels, and light emission of the organic EL element 10 of each of the plurality of pixels 3. It is carried out. Such a light emitting method is called an active matrix method.
ここで、有機EL素子10の発光は複数の階調電位を持つ多値の画像データ信号による複数の階調の発光でもよいし、2値の画像データ信号による所定の発光量のオン、オフでもよい。また、コンデンサ13の電位の保持は次の走査信号の印加まで継続して保持してもよいし、次の走査信号が印加される直前に放電させてもよい。 Here, the light emission of the organic EL element 10 may be light emission of a plurality of gradations by a multi-value image data signal having a plurality of gradation potentials, or by turning on / off a predetermined light emission amount by a binary image data signal. Good. The potential of the capacitor 13 may be maintained until the next scanning signal is applied, or may be discharged immediately before the next scanning signal is applied.
本発明においては、上述したアクティブマトリクス方式に限らず、走査信号が走査されたときのみデータ信号に応じて有機EL素子を発光させるパッシブマトリクス方式の発光駆動でもよい。 In the present invention, not only the active matrix method described above, but also a passive matrix light emission drive in which the organic EL element emits light according to the data signal only when the scanning signal is scanned.
図4は、パッシブマトリクス方式による表示装置の模式図である。図4において、複数の走査線5と複数の画像データ線6が画素3を挟んで対向して格子状に設けられている。 FIG. 4 is a schematic view of a passive matrix display device. In FIG. 4, a plurality of scanning lines 5 and a plurality of image data lines 6 are provided in a lattice shape so as to face each other with the pixel 3 interposed therebetween.
順次走査により走査線5の走査信号が印加されたとき、印加された走査線5に接続している画素3が画像データ信号に応じて発光する。 When the scanning signal of the scanning line 5 is applied by sequential scanning, the pixels 3 connected to the applied scanning line 5 emit light according to the image data signal.
パッシブマトリクス方式では画素3にアクティブ素子が無く、製造コストの低減が計れる。 In the passive matrix system, the pixel 3 has no active element, and the manufacturing cost can be reduced.
《照明装置》
上記有機EL素子を有する本発明の照明装置について説明する。《Lighting device》
The lighting device of the present invention having the organic EL element will be described.
本発明の有機EL素子に共振器構造を持たせた有機EL素子として用いてもよく、このような共振器構造を有した有機EL素子の使用目的としては、光記憶媒体の光源、電子写真複写機の光源、光通信処理機の光源、光センサーの光源等が挙げられるが、これらに限定されない。また、レーザ発振をさせることにより上記用途に使用してもよい。 The organic EL element of the present invention may be used as an organic EL element having a resonator structure. The purpose of use of the organic EL element having such a resonator structure is as follows. The light source of a machine, the light source of an optical communication processing machine, the light source of a photosensor, etc. are mentioned, However It is not limited to these. Moreover, you may use for the said use by making a laser oscillation.
また、本発明の有機EL素子は照明用や露光光源のような一種のランプとして使用してもよいし、画像を投影するタイプのプロジェクション装置や、静止画像や動画像を直接視認するタイプの表示装置(ディスプレイ)として使用してもよい。 Further, the organic EL element of the present invention may be used as a kind of lamp for illumination or exposure light source, a projection device for projecting an image, or a display for directly viewing a still image or a moving image. It may be used as a device (display).
動画再生用の表示装置として使用する場合の駆動方式は、単純マトリクス(パッシブマトリクス)方式でもアクティブマトリクス方式でもどちらでもよい。または、異なる発光色を有する本発明の有機EL素子を2種以上使用することにより、フルカラー表示装置を作製することが可能である。 The driving method when used as a display device for moving image reproduction may be either a simple matrix (passive matrix) method or an active matrix method. Alternatively, a full-color display device can be manufactured by using two or more organic EL elements of the present invention having different emission colors.
また本発明の有機EL材料は照明装置として、実質白色の発光を生じる有機EL素子に適用できる。複数の発光材料により複数の発光色を同時に発光させて混色により白色発光を得る。複数の発光色の組み合わせとしては、青色、緑色、青色の3原色の3つの発光極大波長を含有させたものでもよいし、青色と黄色、青緑と橙色等の補色の関係を利用した2つの発光極大波長を含有したものでもよい。 The organic EL material of the present invention can be applied as an illumination device to an organic EL element that emits substantially white light. A plurality of light emitting colors are simultaneously emitted by a plurality of light emitting materials to obtain white light emission by color mixing. The combination of a plurality of emission colors may include three emission maximum wavelengths of the three primary colors of blue, green, and blue, or two using the relationship of complementary colors such as blue and yellow, blue green and orange, etc. The thing containing the light emission maximum wavelength may be used.
また複数の発光色を得るための発光材料の組み合わせは、複数のリン光または蛍光で発光する材料を複数組み合わせたもの、蛍光またはリン光で発光する発光材料と、発光材料からの光を励起光として発光する色素材料との組み合わせたもののいずれでもよいが、本発明に係る白色有機EL素子においては、発光ドーパントを複数組み合わせ混合するだけでよい。 In addition, a combination of light emitting materials for obtaining a plurality of emission colors is a combination of a plurality of phosphorescent or fluorescent materials, a light emitting material that emits fluorescence or phosphorescence, and light from the light emitting material as excitation light. Any of those combined with a dye material that emits light may be used, but in the white organic EL device according to the present invention, only a combination of a plurality of light-emitting dopants may be mixed.
発光層、正孔輸送層あるいは電子輸送層等の形成時のみマスクを設け、マスクにより塗り分ける等単純に配置するだけでよく、他層は共通であるのでマスク等のパターニングは不要であり、一面に蒸着法、キャスト法、スピンコート法、インクジェット法、印刷法等で例えば電極膜を形成でき、生産性も向上する。 It is only necessary to provide a mask only when forming a light emitting layer, a hole transport layer, an electron transport layer, etc., and simply arrange them separately by coating with the mask. Since other layers are common, patterning of the mask or the like is not necessary. In addition, for example, an electrode film can be formed by a vapor deposition method, a cast method, a spin coating method, an ink jet method, a printing method, or the like, and productivity is also improved.
この方法によれば、複数色の発光素子をアレー状に並列配置した白色有機EL装置と異なり、素子自体が発光白色である。 According to this method, unlike a white organic EL device in which light emitting elements of a plurality of colors are arranged in parallel in an array, the elements themselves are luminescent white.
発光層に用いる発光材料としては特に制限はなく、例えば、液晶表示素子におけるバックライトであれば、CF(カラーフィルター)特性に対応した波長範囲に適合するように、本発明に係る金属錯体、また公知の発光材料の中から任意のものを選択して組み合わせて白色化すればよい。 There is no restriction | limiting in particular as a luminescent material used for a light emitting layer, For example, if it is a backlight in a liquid crystal display element, the metal complex which concerns on this invention so that it may suit the wavelength range corresponding to CF (color filter) characteristic, Any one of known luminescent materials may be selected and combined to whiten.
《本発明の照明装置の一態様》
本発明の有機EL素子を具備した、本発明の照明装置の一態様について説明する。<< One Embodiment of Lighting Device of the Present Invention >>
One aspect of the lighting device of the present invention that includes the organic EL element of the present invention will be described.
本発明の有機EL素子の非発光面をガラスケースで覆い、厚み300μmのガラス基板を封止用基板として用いて、周囲にシール材として、エポキシ系光硬化型接着剤(東亞合成社製ラックストラックLC0629B)を適用し、これを陰極上に重ねて透明支持基板と密着させ、ガラス基板側からUV光を照射して、硬化させて、封止し、図5、図6に示すような照明装置を形成することができる。 The non-light emitting surface of the organic EL device of the present invention is covered with a glass case, a glass substrate having a thickness of 300 μm is used as a sealing substrate, and an epoxy-based photocurable adhesive (LUX TRACK manufactured by Toagosei Co., Ltd.) is used as a sealing material. LC0629B) is applied, and this is overlaid on the cathode and brought into close contact with the transparent support substrate, irradiated with UV light from the glass substrate side, cured and sealed, and an illumination device as shown in FIGS. Can be formed.
図5は、照明装置の概略図を示し、本発明の有機EL素子201はガラスカバー202で覆われている(尚、ガラスカバーでの封止作業は、有機EL素子201を大気に接触させることなく窒素雰囲気下のグローブボックス(純度99.999%以上の高純度窒素ガスの雰囲気下)で行った。)。 FIG. 5 shows a schematic diagram of a lighting device, and the organic EL element 201 of the present invention is covered with a glass cover 202 (in addition, the sealing operation with the glass cover is to bring the organic EL element 201 into contact with the atmosphere. And a glove box under a nitrogen atmosphere (in an atmosphere of high-purity nitrogen gas having a purity of 99.999% or more).
図6は、照明装置の断面図を示し、図6において、205は陰極、206は有機EL層、207は透明電極付きガラス基板を示す。尚、ガラスカバー202内には窒素ガス208が充填され、捕水剤209が設けられている。 6 shows a cross-sectional view of the lighting device. In FIG. 6, reference numeral 205 denotes a cathode, 206 denotes an organic EL layer, and 207 denotes a glass substrate with a transparent electrode. The glass cover 202 is filled with nitrogen gas 208 and a water catching agent 209 is provided.
以下、実施例により本発明を説明するが、本発明はこれらに限定されない。尚、実施例において「%」の表示を用いるが、特に断りがない限り「質量%」を表す。また、以下に実施例で使用する化合物の構造を示す。 EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to these. In addition, although the display of "%" is used in an Example, unless otherwise indicated, "mass%" is represented. The structures of the compounds used in the examples are shown below.
実施例1
《有機EL材料薄膜1−1の作製》:本発明
30mm×30mm×1.1mmの石英基板をイソプロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った後、市販のスピンコータに取り付け、化合物例1(100mg)を10mlのトルエンに溶解した溶液を1500rpm、30秒の条件下、スピンコート法により成膜し、更に25℃で1時間真空乾燥して薄膜を得た。Example 1
<< Preparation of Organic EL Material Thin Film 1-1 >>: The present invention A quartz substrate of 30 mm × 30 mm × 1.1 mm is ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes. A thin film was obtained by attaching a solution obtained by dissolving Compound Example 1 (100 mg) in 10 ml of toluene to a commercially available spin coater by spin coating at 1500 rpm for 30 seconds and further vacuum drying at 25 ° C. for 1 hour. It was.
得られた薄膜に紫外光を60秒間照射し、化合物例1の構造単位を有する高分子化合物の薄膜(有機EL材料薄膜1−1)を作製した。 The obtained thin film was irradiated with ultraviolet light for 60 seconds to prepare a polymer compound thin film (organic EL material thin film 1-1) having the structural unit of Compound Example 1.
得られた有機EL材料薄膜1−1について、分光光度計U−3300(日立社製)にて吸収スペクトルを測定した。 About the obtained organic EL material thin film 1-1, the absorption spectrum was measured with the spectrophotometer U-3300 (made by Hitachi).
《有機EL材料薄膜1−2〜1−4の作製》:本発明
有機EL材料薄膜1−1の作製において、化合物例1の代わりに、化合物例18、19、22を各々用いた以外は同様にして有機EL材料薄膜1−2〜1−4を各々作製した。<< Preparation of Organic EL Material Thin Films 1-2 to 1-4 >>: Present Invention Same as the preparation of the organic EL material thin film 1-1 except that Compound Examples 18, 19, and 22 were used instead of Compound Example 1, respectively. Thus, organic EL material thin films 1-2 to 1-4 were respectively prepared.
《有機EL材料薄膜1−5の作製》:比較例
有機EL材料薄膜1−1の作製において、化合物例1の代わりに、比較化合物1を用いた以外は同様にして有機EL材料薄膜1−5(比較例)を作製した。<< Preparation of Organic EL Material Thin Film 1-5 >>: Comparative Example Organic EL material thin film 1-5 was prepared in the same manner as in the preparation of organic EL material thin film 1-1 except that Comparative Compound 1 was used instead of Compound Example 1. (Comparative example) was produced.
《有機EL材料薄膜の耐溶剤性評価》:有機EL素子材料の硬化性
有機EL素子材料の硬化性を評価するにあたり、得られた有機EL材料薄膜1−1〜1−5の各々について、下記のように薄膜の耐溶剤性を評価した。<< Solvent Resistance Evaluation of Organic EL Material Thin Film >>: Curability of Organic EL Element Material In evaluating the curability of the organic EL element material, each of the obtained organic EL material thin films 1-1 to 1-5 is described below. Thus, the solvent resistance of the thin film was evaluated.
得られた、有機EL材料薄膜1−1〜1−5の各々について、20℃のトルエン中に垂直に浸し、基板全体が浸かった状態で3秒間静止した後引き上げ、25℃で1時間真空乾燥した。 Each of the obtained organic EL material thin films 1-1 to 1-5 was immersed vertically in toluene at 20 ° C., held for 3 seconds with the entire substrate immersed, pulled up, and vacuum dried at 25 ° C. for 1 hour. did.
浸漬後の有機EL材料薄膜1−1〜1−5の各々について、浸漬前と同様に吸収スペクトルを測定し、200nm〜250nmの極大波長における吸光度を浸漬前後で比較し、下記に示すようにランク評価を行った。 For each of the organic EL material thin films 1-1 to 1-5 after the immersion, the absorption spectrum is measured in the same manner as before the immersion, and the absorbance at the maximum wavelength of 200 nm to 250 nm is compared before and after the immersion. Evaluation was performed.
◎:(浸漬後の吸光度÷浸漬前の吸光度)の値が0.98を超える
○:(浸漬後の吸光度÷浸漬前の吸光度)の値が0.95を超える〜0.98
△:(浸漬後の吸光度÷浸漬前の吸光度)の値が0.90〜0.95
×:(浸漬後の吸光度÷浸漬前の吸光度)の値が0.90未満
得られた結果を下記に示す。A: (absorbance after immersion / absorbance before immersion) exceeds 0.98 O: (absorbance after immersion / absorbance before immersion) exceeds 0.95 to 0.98
Δ: (absorbance after immersion ÷ absorbance before immersion) is 0.90 to 0.95
X: The value of (absorbance after immersion ÷ absorbance before immersion) is less than 0.90. The results obtained are shown below.
有機EL材料薄膜No. 有機EL材料 耐溶剤性 備考
有機EL材料薄膜1−1 化合物例1 ◎ 本発明
有機EL材料薄膜1−2 化合物例18 △ 本発明
有機EL材料薄膜1−3 化合物例19 △ 本発明
有機EL材料薄膜1−4 化合物例22 ○ 本発明
有機EL材料薄膜1−5 比較化合物1 × 比較例
上記から、本発明の有機EL素子材料を用いて作製された、有機EL材料薄膜1−1〜1−4は比較の有機EL材料薄膜1−5に比べて、高い耐溶剤性を示すことから、本発明の有機EL素子材料は実用的に十分な架橋性(硬化性ともいう)を有し、耐溶剤性の高い薄膜を形成していることが判る。
実施例2
《有機EL材料薄膜2−1の作製》:本発明
30mm×30mm×1.1mmの石英基板をイソプロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った後、市販のスピンコータに取り付け、化合物例3(60mg)を10mlのトルエンに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により成膜し、更に25℃で1時間真空乾燥して、膜厚約25nmの薄膜を得た。Organic EL material thin film No. Organic EL material Solvent resistance Remarks Organic EL material thin film 1-1 Compound example 1 ◎ The present invention Organic EL material thin film 1-2 Compound example 18 △ The present invention Organic EL material thin film 1-3 Compound example 19 △ The present invention Organic EL material thin film 1-4 Compound Example 22 ○ Present Organic EL Material Thin Film 1-5 Comparative Compound 1 × Comparative Example From the above, organic EL material thin films 1-1 to 1-4 produced using the organic EL element material of the present invention. Shows higher solvent resistance than the comparative organic EL material thin film 1-5, the organic EL element material of the present invention has practically sufficient crosslinkability (also referred to as curability) and is solvent resistant. It can be seen that a highly thin film is formed.
Example 2
<< Preparation of Organic EL Material Thin Film 2-1 >>: The present invention A quartz substrate of 30 mm × 30 mm × 1.1 mm was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes. A solution obtained by dissolving Compound Example 3 (60 mg) in 10 ml of toluene was formed by spin coating at 1000 rpm for 30 seconds, and further vacuum dried at 25 ° C. for 1 hour to obtain a film thickness. A thin film of about 25 nm was obtained.
得られた薄膜に紫外光を90秒間照射し、化合物例3の構造単位を有する高分子化合物の薄膜(有機EL材料薄膜2−1)を作製した。 The resulting thin film was irradiated with ultraviolet light for 90 seconds to prepare a polymer compound thin film (organic EL material thin film 2-1) having the structural unit of Compound Example 3.
《有機EL材料薄膜2−2〜2−4の作製》:本発明
有機EL材料薄膜2−1の作製において、化合物例3の代わりに、化合物例10、14、21に各々変更した以外は同様にして、有機EL材料薄膜2−2〜2−4を作製した。<< Preparation of Organic EL Material Thin Films 2-2 to 2-4 >>: Present Invention The same as in the preparation of the organic EL material thin film 2-1, except that instead of Compound Example 3, each of Compound Examples 10, 14, and 21 was changed. Thus, organic EL material thin films 2-2 to 2-4 were produced.
《有機EL材料薄膜2−5の作製》:比較例
有機EL材料薄膜2−1の作製において、化合物3の代わりに、比較化合物1を用いた以外は同様にして有機EL材料薄膜2−5を作製した。<< Preparation of Organic EL Material Thin Film 2-5 >>: Comparative Example In the preparation of the organic EL material thin film 2-1, the organic EL material thin film 2-5 was prepared in the same manner except that Comparative Compound 1 was used instead of Compound 3. Produced.
《有機EL材料薄膜の平滑性評価》:溶剤浸漬前及び溶剤浸漬後の平滑性評価
得られた有機EL材料薄膜2−1〜2−5の各々について、紫外光照射前後の薄膜について、中心部50μm角の平均面粗さ(Ra)を原子間力顕微鏡(AFM)を用いて測定した。尚、本発明に係る平均面粗さとは、JIS−B 0601−1994にて定義される表面粗さを表す。<< Smoothness evaluation of organic EL material thin film >>: Smoothness evaluation before solvent immersion and after solvent immersion For each of the obtained organic EL material thin films 2-1 to 2-5, the central part of the thin film before and after ultraviolet light irradiation The average surface roughness (Ra) of 50 μm square was measured using an atomic force microscope (AFM). The average surface roughness according to the present invention represents the surface roughness defined in JIS-B 0601-1994.
次いで、有機EL材料薄膜2−1〜2−5の各々を20℃のトルエン中に垂直に浸し、基板全体が浸漬した状態で3秒間静止した後、引き上げ、25℃で1時間真空乾燥した。 Next, each of the organic EL material thin films 2-1 to 2-5 was immersed vertically in toluene at 20 ° C., rested for 3 seconds in a state where the entire substrate was immersed, then pulled up and vacuum dried at 25 ° C. for 1 hour.
浸漬後の各薄膜について浸漬前と同様に平均面粗さ(Ra)を測定し、下記に示すようらランク評価を行った。 About each thin film after immersion, average surface roughness (Ra) was measured similarly to before immersion, and rank evaluation was performed as shown below.
◎:0.44nm未満
○:0.44nm〜0.49nm
△:0.49nmを超える〜0.54nm
×:0.54nmを超える
得られた結果を下記に示す。
有機EL材料薄膜No. 化合物 平均面粗さ 平均面粗さ 備考
(浸漬前) (浸漬後)
有機EL材料薄膜2−1 化合物例3 ◎ ◎ 本発明
有機EL材料薄膜2−2 化合物例10 ◎ ○ 本発明
有機EL材料薄膜2−3 化合物例14 ○ △ 本発明
有機EL材料薄膜2−4 化合物例21 △ △ 本発明
有機EL材料薄膜2−5 比較化合物例1 × × 比較例
上記から、比較にくらべ、本発明の有機EL材料薄膜は、溶剤浸漬前、溶剤浸漬後のいずれの薄膜についても、表面平滑性の高い膜を与え、且つ、溶媒にさらされた後も高い平滑性を保っていることが明らかである。
実施例3
《有機EL素子3−1の製造》:比較例
陽極として100mm×100mm×1.1mmのガラス基板上にITO(インジウムチンオキシド)を100nm製膜した基板(NHテクノグラス社製NA−45)にパターニングを行った後、このITO透明電極を設けた透明支持基板をイソプロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った。A: Less than 0.44 nm B: 0.44 nm to 0.49 nm
Δ: More than 0.49 nm to 0.54 nm
X: exceeding 0.54 nm The obtained results are shown below.
Organic EL material thin film No. Compound Average surface roughness Average surface roughness Remarks
(Before dipping) (After dipping)
Organic EL Material Thin Film 2-1 Compound Example 3 ◎ ◎ Organic EL Material Thin Film 2-2 Compound Example 10 ◎ ○ Organic EL Material Thin Film 2-3 Compound Example 14 ○ △ Organic EL Material Thin Film 2-4 Compound of the Present Invention Example 21 △ △ Organic EL Material Thin Film of the Present Invention 2-5 Comparative Compound Example 1 XX Comparative Example From the above, the organic EL material thin film of the present invention is in any thin film before or after the solvent immersion. It is apparent that a film having a high surface smoothness is given and that the film has a high smoothness even after being exposed to a solvent.
Example 3
<< Manufacture of Organic EL Element 3-1 >>: Comparative Example A substrate (NA-45 manufactured by NH Techno Glass Co., Ltd.) formed by depositing 100 nm of ITO (indium tin oxide) on a glass substrate of 100 mm × 100 mm × 1.1 mm as an anode. After patterning, the transparent support substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes.
この透明支持基板上に、ポリ(3,4−エチレンジオキシチオフェン)−ポリスチレンスルホネート(PEDOT/PSS、Bayer社製、Baytron P Al 4083)を純水で70%に希釈した溶液を3000rpm、30秒でスピンコート法により製膜した後、200℃にて1時間乾燥し、膜厚20nmの正孔輸送層を設けた。 On this transparent support substrate, a solution obtained by diluting poly (3,4-ethylenedioxythiophene) -polystyrene sulfonate (PEDOT / PSS, Bayer, Baytron P Al 4083) to 70% with pure water at 3000 rpm for 30 seconds. After forming the film by spin coating, the film was dried at 200 ° C. for 1 hour to provide a 20 nm-thick hole transport layer.
この基板を窒素雰囲気下に移し、正孔輸送層上に、50mgの比較化合物2を10mlのトルエンに溶解した溶液を1500rpm、30秒の条件下、スピンコート法により製膜した。 The substrate was transferred to a nitrogen atmosphere, and a solution of 50 mg of Comparative Compound 2 dissolved in 10 ml of toluene was formed on the hole transport layer by spin coating at 1500 rpm for 30 seconds.
窒素雰囲気下、180秒間紫外光を照射し、光重合・架橋を行い、膜厚約20nmの第二正孔輸送層を形成した。 In a nitrogen atmosphere, ultraviolet light was irradiated for 180 seconds to carry out photopolymerization and crosslinking to form a second hole transport layer having a thickness of about 20 nm.
この第二正孔輸送層上に、100mgのホスト材料1と10mgのIr−15を10mlのトルエンに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により製膜した。120℃で1時間真空乾燥し、膜厚約50nmの発光層とした。 On this second hole transport layer, a solution of 100 mg of the host material 1 and 10 mg of Ir-15 dissolved in 10 ml of toluene was formed by spin coating under conditions of 1000 rpm and 30 seconds. It vacuum-dried at 120 degreeC for 1 hour, and was set as the light emitting layer with a film thickness of about 50 nm.
次にこの発光層上に、50mgの電子輸送材料1を10mlの1−ブタノールに溶解した溶液を5000rpm、30秒の条件下、スピンコート法により製膜した。60℃で1時間真空乾燥し、膜厚約15nmの電子輸送層とした。
続いて、この基板を真空蒸着装置の基板ホルダーに固定し、真空槽を4×10−4Paまで減圧し、陰極バッファー層としてフッ化リチウム1.0nm及び陰極としてアルミニウム110nmを蒸着して陰極を形成し、有機EL素子3−1を作製した。Next, a solution obtained by dissolving 50 mg of the electron transport material 1 in 10 ml of 1-butanol was formed on this light emitting layer by spin coating under a condition of 5000 rpm for 30 seconds. It vacuum-dried at 60 degreeC for 1 hour, and was set as the electron carrying layer with a film thickness of about 15 nm.
Subsequently, this substrate is fixed to a substrate holder of a vacuum deposition apparatus, the vacuum chamber is decompressed to 4 × 10 −4 Pa, lithium fluoride 1.0 nm is deposited as a cathode buffer layer, and aluminum 110 nm is deposited as a cathode to form a cathode. Then, an organic EL element 3-1 was produced.
《有機EL素子3−2〜3−6の作製》
有機EL素子3−1の作製において、比較化合物2を下記に示す化合物に置き換えた以外は同様にして有機EL素子3−2〜3−6を各々作製した。<< Production of Organic EL Elements 3-2 to 3-6 >>
Organic EL elements 3-2 to 3-6 were respectively prepared in the same manner except that Comparative Compound 2 was replaced with the compound shown below in preparation of the organic EL element 3-1.
《有機EL素子3−1〜3−6の評価》
得られた有機EL素子3−1〜3−6を評価するに際しては、作製後の各有機EL素子の非発光面をガラスケースで覆い、厚み300μmのガラス基板を封止用基板として用いて、周囲にシール材として、エポキシ系光硬化型接着剤(東亞合成社製ラックストラックLC0629B)を適用し、これを上記陰極上に重ねて前記透明支持基板と密着させ、ガラス基板側からUV光を照射して、硬化させて、封止して、図5、図6に示すような照明装置を形成して評価した。<< Evaluation of Organic EL Elements 3-1 to 3-6 >>
When evaluating the obtained organic EL elements 3-1 to 3-6, the non-light-emitting surface of each organic EL element after production was covered with a glass case, and a glass substrate having a thickness of 300 μm was used as a sealing substrate. An epoxy-based photo-curing adhesive (Lux Track LC0629B manufactured by Toagosei Co., Ltd.) is applied as a sealing material in the periphery, and this is placed on the cathode to be in close contact with the transparent support substrate and irradiated with UV light from the glass substrate side. Then, it was cured and sealed, and an illumination device as shown in FIGS. 5 and 6 was formed and evaluated.
次いで、下記のようにして外部取り出し量子効率および発光寿命を測定した。 Next, external extraction quantum efficiency and emission lifetime were measured as follows.
(外部取りだし量子効率)
作製した有機EL素子について、23℃、乾燥窒素ガス雰囲気下で2.5mA/cm2定電流を印加した時の外部取り出し量子効率(%)を測定した。(External extraction quantum efficiency)
The organic EL devices fabricated, 23 ° C., 2.5 mA under a dry nitrogen atmosphere / cm 2 external extraction quantum efficiency upon application of a constant current (%) was measured.
尚、測定には同様に分光放射輝度計CS−1000(コニカミノルタセンシング社製)を用いた。 For the measurement, a spectral radiance meter CS-1000 (manufactured by Konica Minolta Sensing) was used in the same manner.
また、外部取りだし量子効率の測定結果は、有機EL素子3−1の測定値を100とした時の相対値で表した。 Moreover, the measurement result of the external extraction quantum efficiency was expressed as a relative value when the measurement value of the organic EL element 3-1 was 100.
(寿命)
2.5mA/cm2の一定電流で駆動した時に、輝度が発光開始直後の輝度(初期輝度)の半分に低下するのに要した時間を測定し、これを半減寿命時間(τ0.5)として寿命の指標とした。尚、測定には分光放射輝度計CS−1000(コニカミノルタセンシング社製)を用いた。(lifespan)
When driving at a constant current of 2.5 mA / cm 2 , the time required for the luminance to drop to half of the luminance immediately after the start of light emission (initial luminance) was measured, and this was calculated as the half-life time (τ 0.5 ). As an index of life. For the measurement, a spectral radiance meter CS-1000 (manufactured by Konica Minolta Sensing) was used.
また、寿命の測定結果は、有機EL素子3−1を100とした時の相対値で表した。 Moreover, the measurement result of the lifetime was expressed as a relative value when the organic EL element 3-1 was 100.
得られた結果を下記に示す。 The results obtained are shown below.
有機EL素子 化合物 外部取り出し 寿命 備考
量子効率
3−1 比較化合物2 100 100 比較例
3−2 化合物例3 360 300 本発明
3−3 化合物例12 370 290 本発明
3−4 化合物例13 400 240 本発明
3−5 化合物例15 420 230 本発明
3−6 化合物例19 330 270 本発明
実施例4
《有機EL素子4−1の作製:フルカラー表示装置の作製》
図7は有機ELフルカラー表示装置の概略構成図を示す。陽極としてガラス基板101上にITO透明電極(102)を100nm製膜した基板(NHテクノグラス社製NA45)に100μmのピッチでパターニングを行った後、このガラス基板上でITO透明電極の間に非感光性ポリイミドの隔壁103(幅20μm、厚さ2.0μm)をフォトリソグラフィーで形成させた。Organic EL element Compound External extraction Life Remarks
Quantum Efficiency 3-1 Comparative Compound 2 100 100 Comparative Example 3-2 Compound Example 3 360 300 Present Invention 3-3 Compound Example 12 370 290 Present Invention 3-4 Compound Example 13 400 240 Present Invention 3-5 Compound Example 15 420 230 Invention 3-6 Compound Example 19 330 270 Invention Example 4
<< Preparation of Organic EL Element 4-1: Preparation of Full Color Display Device >>
FIG. 7 shows a schematic configuration diagram of an organic EL full-color display device. After patterning at a pitch of 100 μm on a substrate (NH45 manufactured by NH Techno Glass Co., Ltd.) formed by forming a 100 nm ITO transparent electrode (102) on a glass substrate 101 as an anode, non-between the ITO transparent electrodes on this glass substrate A photosensitive polyimide partition 103 (width 20 μm, thickness 2.0 μm) was formed by photolithography.
ITO電極上ポリイミド隔壁の間に下記組成の正孔注入層組成物を、インクジェットヘッド(エプソン社製;MJ800C)を用いて吐出注入し、紫外光を120秒間照射し、60℃、10分間の乾燥処理により膜厚40nmの正孔注入層104を作製した。 A hole injection layer composition having the following composition was ejected and injected between polyimide partition walls on the ITO electrode using an inkjet head (manufactured by Epson Corporation; MJ800C), irradiated with ultraviolet light for 120 seconds, and dried at 60 ° C. for 10 minutes. A hole injection layer 104 having a thickness of 40 nm was produced by the treatment.
この正孔注入層上に、各々下記の青色発光層組成物、緑色発光層組成物、赤色発光層組成物を同様にインクジェットヘッドを使用して吐出注入し、60℃、10分間乾燥処理し、それぞれの発光層(105B、105G、105R)を形成させた。 On the hole injection layer, the following blue light-emitting layer composition, green light-emitting layer composition, and red light-emitting layer composition were similarly discharged and injected using an inkjet head, and dried at 60 ° C. for 10 minutes. Each light emitting layer (105B, 105G, 105R) was formed.
最後に発光層(105B、105G、105R)を覆うように、陰極としてAl(106)を真空蒸着して、フルカラー表示装置である有機EL素子4−1を作製した。 Finally, Al (106) was vacuum-deposited as a cathode so as to cover the light-emitting layers (105B, 105G, 105R), and an organic EL element 4-1 as a full-color display device was produced.
作製した有機EL素子4−1は、各々の電極に電圧を印加することにより各々青色、緑色、赤色の発光を示し、フルカラー表示装置として利用できることがわかった。 It was found that the produced organic EL element 4-1 emitted blue, green, and red light by applying a voltage to each electrode, and could be used as a full-color display device.
(正孔注入層組成物)
化合物例6 20質量部
シクロヘキシルベンゼン 50質量部
イソプロピルビフェニル 50質量部
(青色発光層組成物)
ホスト化合物2 0.7質量部
D−3 0.04質量部
シクロヘキシルベンゼン 50質量部
イソプロピルビフェニル 50質量部
(緑色発光層組成物)
ホスト化合物2 0.7質量部
Ir−1 0.04質量部
シクロヘキシルベンゼン 50質量部
イソプロピルビフェニル 50質量部
(赤色発光層組成物)
ホスト化合物2 0.7質量部
Ir−14 0.04質量部
シクロヘキシルベンゼン 50質量部
イソプロピルビフェニル 50質量部
(電子輸送層組成物)
電子輸送材料1 20質量部
1−ブタノール 50質量部
イソプロピルビフェニル 50質量部
また、D−3、Ir−1、Ir−14の代りに化合物Ir−2〜Ir−27、Pt−1〜Pt−3、A−1、d−1〜6、Pd−1〜3、Rh−1〜3、(1)〜(187)、D−1〜27を用いて作製した有機EL素子でも、同様にフルカラー表示装置として利用できることがわかった。
実施例5
《白色発光有機EL素子5−1の作製》
実施例3の透明電極基板上に、ポリ(3,4−エチレンジオキシチオフェン)−ポリスチレンスルホネート(PEDOT/PSS、Bayer社製、Baytron P Al 4083)を純水で70%に希釈した溶液を3000rpm、30秒でスピンコート法により製膜した後、200℃にて1時間乾燥し、膜厚20nmの正孔輸送層を設けた。(Hole injection layer composition)
Compound Example 6 20 parts by mass of cyclohexylbenzene 50 parts by mass of isopropyl biphenyl 50 parts by mass (blue light emitting layer composition)
Host compound 2 0.7 parts by mass D-3 0.04 parts by mass cyclohexylbenzene 50 parts by mass Isopropylbiphenyl 50 parts by mass (green light emitting layer composition)
Host compound 2 0.7 parts by mass Ir-1 0.04 parts by mass cyclohexylbenzene 50 parts by mass Isopropylbiphenyl 50 parts by mass (red light emitting layer composition)
Host compound 2 0.7 parts by mass Ir-14 0.04 parts by mass cyclohexylbenzene 50 parts by mass Isopropylbiphenyl 50 parts by mass (electron transport layer composition)
Electron transport material 1 20 parts by mass 1-butanol 50 parts by mass Isopropyl biphenyl 50 parts by mass In addition to D-3, Ir-1, and Ir-14, compounds Ir-2 to Ir-27, Pt-1 to Pt-3 , A-1, d-1 to 6, Pd-1 to 3, Rh-1 to 3, (1) to (187), and organic EL devices fabricated using D-1 to 27 are similarly full-color display. It was found that it can be used as a device.
Example 5
<< Preparation of White Light-Emitting Organic EL Element 5-1 >>
A solution obtained by diluting poly (3,4-ethylenedioxythiophene) -polystyrene sulfonate (PEDOT / PSS, Bayer, Baytron P Al 4083) to 70% with pure water on the transparent electrode substrate of Example 3 is 3000 rpm. After forming the film by spin coating in 30 seconds, the film was dried at 200 ° C. for 1 hour to provide a 20 nm-thick hole transport layer.
この基板を窒素雰囲気下に移し、正孔輸送層上に、50mgの化合物例1を10mlのトルエンに溶解した溶液を1500rpm、30秒の条件下、スピンコート法により製膜した。窒素雰囲気下、180秒間紫外光を照射し、光重合・架橋を行い、膜厚約20nmの第二正孔輸送層を形成した。更に発光層として、100mgのホスト化合物2、10mgのIr−15及び0.1mgのIr−9を10mlのトルエンに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により製膜した。120℃で1時間真空乾燥し、膜厚約50nmの発光層とした。 This substrate was transferred to a nitrogen atmosphere, and a solution of 50 mg of Compound Example 1 dissolved in 10 ml of toluene was formed on the hole transport layer by spin coating at 1500 rpm for 30 seconds. In a nitrogen atmosphere, ultraviolet light was irradiated for 180 seconds to carry out photopolymerization and crosslinking to form a second hole transport layer having a thickness of about 20 nm. Further, as a light-emitting layer, a solution prepared by dissolving 100 mg of the host compound 2, 10 mg of Ir-15, and 0.1 mg of Ir-9 in 10 ml of toluene was formed by spin coating at 1000 rpm for 30 seconds. It vacuum-dried at 120 degreeC for 1 hour, and was set as the light emitting layer with a film thickness of about 50 nm.
次いで、実施例3と同様に、電子輸送層及びフッ化リチウム層、アルミニウム陰極を形成し、白色発光有機EL素子5−1を作製し、実施例3と同様にして封止した。 Next, in the same manner as in Example 3, an electron transport layer, a lithium fluoride layer, and an aluminum cathode were formed to produce a white light-emitting organic EL element 5-1, and sealed in the same manner as in Example 3.
得られた有機EL素子3−1に通電したところほぼ白色の光が得られ、照明装置として使用できることがわかった。尚、ホスト化合物を本発明に係る他の化合物に置き換えても同様に白色の発光が得られることが分かった。
実施例6
《有機EL材料薄膜6−1の作製》:本発明
30mm×30mm×1.1mmの石英基板をイソプロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った後、市販のスピンコータに取り付け、化合物例1(100mg)を10mlのトルエンに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により成膜し、更に25℃で1時間真空乾燥して、膜厚約50nmの薄膜を得た。When the obtained organic EL element 3-1 was energized, almost white light was obtained, and it was found that it could be used as a lighting device. In addition, it turned out that white light emission is obtained similarly even if it replaces a host compound with the other compound which concerns on this invention.
Example 6
<< Preparation of Organic EL Material Thin Film 6-1 >>: The present invention A quartz substrate of 30 mm × 30 mm × 1.1 mm was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes. A solution obtained by dissolving Compound Example 1 (100 mg) in 10 ml of toluene was formed into a film by spin coating at 1000 rpm for 30 seconds, and further vacuum dried at 25 ° C. for 1 hour to obtain a film thickness. A thin film of about 50 nm was obtained.
得られた薄膜を窒素雰囲気下、30秒間紫外光を照射した後30秒間照射を止めるのを1セットとし、5セット繰り返すことで光重合・架橋を行い、化合物例1の構造単位を有する高分子化合物の薄膜(有機EL材料薄膜6−1)を作製した。 The obtained thin film was irradiated with ultraviolet light for 30 seconds in a nitrogen atmosphere, and then the irradiation was stopped for 30 seconds. The polymer having the structural unit of Compound Example 1 was subjected to photopolymerization and crosslinking by repeating 5 sets. A compound thin film (organic EL material thin film 6-1) was prepared.
《有機EL材料薄膜6−2〜6−3の作製》:本発明
有機EL材料薄膜6−1の作製において、化合物例1の代わりに、化合物例7、16に各々変更した以外は同様にして、有機EL材料薄膜6−2〜6−3を作製した。<< Preparation of Organic EL Material Thin Films 6-2 to 6-3 >>: Present Invention In the preparation of the organic EL material thin film 6-1 in the same manner except that Compound Examples 7 and 16 are used instead of Compound Example 1, respectively. Organic EL material thin films 6-2 to 6-3 were prepared.
《有機EL材料薄膜6−4の作製》:比較例
有機EL材料薄膜6−1の作製において、化合物1の代わりに、比較化合物3を用いた以外は同様にして有機EL材料薄膜6−4を作製した。<< Preparation of Organic EL Material Thin Film 6-4 >>: Comparative Example In the preparation of organic EL material thin film 6-1, organic EL material thin film 6-4 was prepared in the same manner except that compound 1 was used instead of compound 1. Produced.
《有機EL材料薄膜の平滑性評価》
得られた有機EL材料薄膜6−1〜6−4の各々について、紫外光照射前後の薄膜について、中心部50μm角の平均面粗さ(Ra)を原子間力顕微鏡(AFM)を用いて測定した。尚、本発明に係る平均面粗さとは、JIS−B 0601−1994にて定義される表面粗さを表す。<< Smoothness evaluation of organic EL material thin film >>
For each of the obtained organic EL material thin films 6-1 to 6-4, the average surface roughness (Ra) of the central 50 μm square was measured using an atomic force microscope (AFM) for the thin films before and after ultraviolet light irradiation. did. The average surface roughness according to the present invention represents the surface roughness defined in JIS-B 0601-1994.
得られた薄膜の平均面粗さ(Ra)について、下記に示すようなランク評価を行った。 Rank evaluation as shown below was performed about the average surface roughness (Ra) of the obtained thin film.
◎:0.44nm未満
○:0.44nm〜0.49nm
△:0.49nmを超える〜0.54nm
×:0.54nmを超える
得られた結果を表6に示す。A: Less than 0.44 nm B: 0.44 nm to 0.49 nm
Δ: More than 0.49 nm to 0.54 nm
X: exceeding 0.54 nm Table 6 shows the obtained results.
《有機EL材料薄膜中の重合性官能基の濃度の分析》
得られた有機EL材料薄膜6−1〜6−4において、ニコレー社製FT−IR Magna 860 − NIC plan IR−Microscopeを用いたIR分析により、含有される重合性官能基量(ビニル基の二重結合)を測定した。各有機EL材料薄膜に対して紫外光を照射する前のビニル基の二重結合部位のピーク強度を100し、紫外光照射後のピーク強度を比較し、下記のようなランク評価を行った
紫外光照射後のピーク強度
○:0.1未満
△:0.1〜0.3
×:0.3を超える
得られた結果を表6に示す。
有機EL材料 化合物 平均面粗さ 紫外光照射後 備考
薄膜No. のピーク強度
6−1 化合物例1 ◎ ○ 本発明
6−2 化合物例7 ◎ ○ 参照例
6−3 化合物例16 ○ △ 本発明
6−4 比較化合物例3 × × 比較例
上記から、比較化合物例3を用いた有機EL材料薄膜は重合性官能基数が多いため架橋時にシュリンクが起こり、膜の平滑性が乱れ、また同量の紫外光を照射した場合でも重合性官能基が残存する傾向が見られた。これに対し本発明の有機EL材料薄膜は、面平滑性の高い膜を与え、且つ、紫外光照射後は重合性官能基の残存もほとんど無いことが明らかである。
実施例7
《有機EL素子7−1の製造》:比較例
陽極として100mm×100mm×1.1mmのガラス基板上にITO(インジウムチンオキシド)を100nm製膜した基板(NHテクノグラス社製NA−45)にパターニングを行った後、このITO透明電極を設けた透明支持基板をイソプロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った。
<< Analysis of concentration of polymerizable functional group in organic EL material thin film >>
The obtained organic EL material thin films 6-1 to 6-4 were analyzed by IR analysis using FT-IR Magna 860-NIC plan IR-Microscope manufactured by Nicorey Co., Ltd. Double bond) was measured. The peak intensity of the vinyl group double bond site before irradiating each organic EL material thin film with ultraviolet light was set to 100, the peak intensities after ultraviolet light irradiation were compared, and the following rank evaluation was performed. Peak intensity after light irradiation ○: Less than 0.1 Δ: 0.1 to 0.3
X: More than 0.3 Table 6 shows the obtained results.
Organic EL material Compound Average surface roughness After UV irradiation Remarks Thin film no. Peak intensity
6-1 Compound Example 1 ◎ ○ Invention 6-2 Compound Example 7 ◎ ○ Reference Example 6-3 Compound Example 16 ○ △ Invention 6-4 Comparative Compound Example 3 × × Comparative Example From the above, Comparative Compound Example 3 was used. Since the organic EL material thin film had a large number of polymerizable functional groups, shrinkage occurred during crosslinking, the smoothness of the film was disturbed, and the polymerizable functional groups tended to remain even when irradiated with the same amount of ultraviolet light. On the other hand, it is clear that the organic EL material thin film of the present invention gives a film having high surface smoothness, and there is almost no polymerizable functional group remaining after irradiation with ultraviolet light.
Example 7
<< Manufacture of Organic EL Element 7-1 >> Comparative Example On a substrate (NA-45 manufactured by NH Techno Glass Co., Ltd.) formed by depositing 100 nm of ITO (indium tin oxide) on a glass substrate of 100 mm × 100 mm × 1.1 mm as an anode. After patterning, the transparent support substrate provided with the ITO transparent electrode was ultrasonically cleaned with isopropyl alcohol, dried with dry nitrogen gas, and subjected to UV ozone cleaning for 5 minutes.
この透明支持基板上に、ポリ(3,4−エチレンジオキシチオフェン)−ポリスチレンスルホネート(PEDOT/PSS、Bayer社製、Baytron P Al 4083)を純水で70%に希釈した溶液を3000rpm、30秒でスピンコート法により製膜した後、200℃にて1時間乾燥し、膜厚20nmの正孔輸送層を設けた。 On this transparent support substrate, a solution obtained by diluting poly (3,4-ethylenedioxythiophene) -polystyrene sulfonate (PEDOT / PSS, Bayer, Baytron P Al 4083) to 70% with pure water at 3000 rpm for 30 seconds. After forming the film by spin coating, the film was dried at 200 ° C. for 1 hour to provide a 20 nm-thick hole transport layer.
この基板を窒素雰囲気下に移し、正孔輸送層上に、30mgの比較化合物3を10mlのクロロホルムに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により製膜した。 This substrate was transferred to a nitrogen atmosphere, and a solution of 30 mg of Comparative Compound 3 dissolved in 10 ml of chloroform was formed on the hole transport layer by spin coating at 1000 rpm for 30 seconds.
窒素雰囲気下、30秒間紫外光を照射した後30秒間照射を止めるのを1セットとし、5セット繰り返すことで光重合・架橋を行い、第二正孔輸送層を形成した。 Under a nitrogen atmosphere, irradiation with ultraviolet light for 30 seconds was followed by stopping the irradiation for 30 seconds as one set, and photopolymerization / crosslinking was performed by repeating 5 sets to form a second hole transport layer.
この第二正孔輸送層上に、100mgのホスト材料3と15mgのIr−12を10mlのトルエンに溶解した溶液を1000rpm、30秒の条件下、スピンコート法により製膜した。60℃で1時間真空乾燥し、膜厚約50nmの発光層とした。 On this second hole transport layer, a solution prepared by dissolving 100 mg of the host material 3 and 15 mg of Ir-12 in 10 ml of toluene was formed by spin coating at 1000 rpm for 30 seconds. It vacuum-dried at 60 degreeC for 1 hour, and was set as the light emitting layer with a film thickness of about 50 nm.
次に、この基板を真空蒸着装置の基板ホルダーに固定し、真空槽を4×10−4Paまで減圧した後、発光層上にBAlq3を30nm蒸着して電子輸送層を形成した。Then, the substrate was fixed to a substrate holder of a vacuum deposition apparatus, after the pressure in the vacuum tank was reduced to 4 × 10 -4 Pa, thereby forming an electron transport layer BAlq 3 to 30nm deposited on the light-emitting layer.
続いて、陰極バッファー層としてフッ化ナトリウムを0.4nm、更に陰極としてアルミニウムを110nm蒸着して陰極を形成し、有機EL素子7−1を作製した。 Subsequently, 0.4 nm of sodium fluoride was deposited as a cathode buffer layer, and 110 nm of aluminum was deposited as a cathode to form a cathode, thereby fabricating an organic EL element 7-1.
《有機EL素子7−2〜7−6の作製》
有機EL素子7−1の作製において、比較化合物3を下記に示す化合物に置き換えた以外は有機EL素子7−1と同様にして有機EL素子7−2〜7−6を各々作製した。<< Production of Organic EL Elements 7-2 to 7-6 >>
In the production of the organic EL element 7-1, organic EL elements 7-2 to 7-6 were produced in the same manner as the organic EL element 7-1 except that the comparative compound 3 was replaced with the following compound.
《有機EL素子7−1〜7−6の評価》
得られた有機EL素子7−1〜7−6を評価するに際しては、作製後の各有機EL素子の非発光面をガラスケースで覆い、厚み300μmのガラス基板を封止用基板として用いて、周囲にシール材として、エポキシ系光硬化型接着剤(東亞合成社製ラックストラックLC0629B)を適用し、これを上記陰極上に重ねて前記透明支持基板と密着させ、ガラス基板側からUV光を照射して、硬化させて、封止して、図5、図6に示すような照明装置を形成して評価した。<< Evaluation of Organic EL Elements 7-1 to 7-6 >>
When evaluating the obtained organic EL elements 7-1 to 7-6, the non-light-emitting surface of each organic EL element after production was covered with a glass case, and a glass substrate having a thickness of 300 μm was used as a sealing substrate. An epoxy-based photo-curing adhesive (Lux Track LC0629B manufactured by Toagosei Co., Ltd.) is applied as a sealing material in the periphery, and this is placed on the cathode to be in close contact with the transparent support substrate and irradiated with UV light from the glass substrate side. Then, it was cured and sealed, and an illumination device as shown in FIGS. 5 and 6 was formed and evaluated.
次いで、下記のようにして外部取り出し量子効率および発光寿命を測定した。 Next, external extraction quantum efficiency and emission lifetime were measured as follows.
(外部取りだし量子効率)
作製した有機EL素子について、23℃、乾燥窒素ガス雰囲気下で2.5mA/cm2定電流を印加した時の外部取り出し量子効率(%)を測定した。(External extraction quantum efficiency)
The organic EL devices fabricated, 23 ° C., 2.5 mA under a dry nitrogen atmosphere / cm 2 external extraction quantum efficiency upon application of a constant current (%) was measured.
尚、測定には同様に分光放射輝度計CS−1000(コニカミノルタセンシング社製)を用いた。 For the measurement, a spectral radiance meter CS-1000 (manufactured by Konica Minolta Sensing) was used in the same manner.
また、外部取りだし量子効率の測定結果は、有機EL素子7−1の測定値を100とした時の相対値で表した。 Moreover, the measurement result of the external extraction quantum efficiency was expressed as a relative value when the measurement value of the organic EL element 7-1 was 100.
(寿命)
2.5mA/cm2の一定電流で駆動した時に、輝度が発光開始直後の輝度(初期輝度)の半分に低下するのに要した時間を測定し、これを半減寿命時間(τ0.5)として寿命の指標とした。尚、測定には分光放射輝度計CS−1000(コニカミノルタセンシング社製)を用いた。(lifespan)
When driving at a constant current of 2.5 mA / cm 2 , the time required for the luminance to drop to half of the luminance immediately after the start of light emission (initial luminance) was measured, and this was calculated as the half-life time (τ 0.5 ). As an index of life. For the measurement, a spectral radiance meter CS-1000 (manufactured by Konica Minolta Sensing) was used.
また、寿命は、有機EL素子3−1を100とした時の相対値で表した。 The lifetime was expressed as a relative value when the organic EL element 3-1 was set to 100.
得られた結果を下記に示す。
有機EL素子 正孔輸送化合物 ドーパント 外部取り出し 寿命 備考
量子効率
7−1 比較化合物3 Ir−12 100 100 比較例
7−2 化合物例16 Ir−12 360 270 本発明
7−3 化合物例16 Ir−16 370 1200 本発明
7−4 化合物例7 Ir−16 370 1300 参照例
7−5 化合物例7 140 390 2000 参照例
7−6 化合物例1 140 400 2100 本発明
The results obtained are shown below.
Organic EL Element Hole Transport Compound Dopant External Extraction Life Remarks Quantum Efficiency 7-1 Comparative Compound 3 Ir-12 100 100 Comparative Example 7-2 Compound Example 16 Ir-12 360 270 Invention 7-3 Compound Example 16 Ir-16 370 1200 Invention 7-4 Compound Example 7 Ir-16 370 1300 Reference Example 7-5 Compound Example 7 140 390 2000 Reference Example 7-6 Compound Example 1 140 400 2100 Invention
Claims (22)
該正孔輸送層の少なくとも1層が、請求の範囲第1項〜請求の範囲第7項のいずれか1項に記載の有機エレクトロルミネッセンス素子材料を含有することを特徴とする有機エレクトロルミネッセンス素子。 In an organic electroluminescence device having a plurality of organic compound layers including a light emitting layer and a hole transport layer between an anode and a cathode,
The hole at least one layer of the transport layer, the organic electroluminescent device characterized by containing the organic electroluminescence device material according to any one of claims first through Section claims paragraph 7.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20160082874A (en) * | 2014-12-29 | 2016-07-11 | 엘지디스플레이 주식회사 | Phosphorescent compound and Light emitting diode and Display device using the same |
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EP2485290A4 (en) | 2009-10-01 | 2013-03-06 | Hitachi Chemical Co Ltd | Material for organic electronics, organic electronic element, organic electroluminescent element, display element using organic electroluminescent element, illuminating device, and display device |
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JP6877976B2 (en) * | 2015-12-07 | 2021-05-26 | 住友化学株式会社 | Light emitting element |
US20170213989A1 (en) * | 2016-01-22 | 2017-07-27 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
JP7192339B2 (en) * | 2017-09-29 | 2022-12-20 | 住友化学株式会社 | light emitting element |
JP7124589B2 (en) * | 2017-09-29 | 2022-08-24 | 住友化学株式会社 | light emitting element |
CN116715594B (en) * | 2023-08-10 | 2023-12-15 | 天津大学 | Star-shaped micromolecule crosslinked hole transport material and preparation method and application thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007251097A (en) * | 2006-03-20 | 2007-09-27 | Konica Minolta Holdings Inc | Organic electroluminescence element, display device using organic electroluminescence element and illuminating device |
JP2008248241A (en) * | 2007-03-07 | 2008-10-16 | Mitsubishi Chemicals Corp | Composition for organic device, polymer membrane and organic electroluminescent element |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000012882A (en) * | 1998-06-25 | 2000-01-14 | Fuji Photo Film Co Ltd | Photosensor having contg. reactive aromatic amine in hole transport layer and manufacture thereof |
JP2002208481A (en) * | 2001-01-11 | 2002-07-26 | Canon Inc | Organic light emission element and manufacturing method of the same |
KR100738219B1 (en) * | 2003-12-23 | 2007-07-12 | 삼성에스디아이 주식회사 | Substance for Intermediate layer of organic electroluminescent device and organic electroluminescent device using the same |
US20060142520A1 (en) * | 2004-12-27 | 2006-06-29 | 3M Innovative Properties Company | Hole transport layers for organic electroluminescent devices |
JP5008324B2 (en) * | 2005-03-23 | 2012-08-22 | 株式会社半導体エネルギー研究所 | Composite materials, materials for light-emitting elements, light-emitting elements, light-emitting devices, and electronic devices. |
JP4813092B2 (en) * | 2005-05-19 | 2011-11-09 | 株式会社リコー | Electrophotographic photosensitive member, image forming method using the same, image forming apparatus, and process cartridge for image forming apparatus |
JP2007197587A (en) * | 2006-01-27 | 2007-08-09 | Seiko Epson Corp | Composition for electrically conductive material, electrically conductive material, electrically conductive layer, electronic device and electronic equipment |
JP4713426B2 (en) * | 2006-08-30 | 2011-06-29 | 京セラ株式会社 | Epitaxial substrate and vapor phase growth method |
-
2009
- 2009-02-16 JP JP2010500646A patent/JP5387563B2/en active Active
- 2009-02-16 WO PCT/JP2009/052508 patent/WO2009107497A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007251097A (en) * | 2006-03-20 | 2007-09-27 | Konica Minolta Holdings Inc | Organic electroluminescence element, display device using organic electroluminescence element and illuminating device |
JP2008248241A (en) * | 2007-03-07 | 2008-10-16 | Mitsubishi Chemicals Corp | Composition for organic device, polymer membrane and organic electroluminescent element |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160082874A (en) * | 2014-12-29 | 2016-07-11 | 엘지디스플레이 주식회사 | Phosphorescent compound and Light emitting diode and Display device using the same |
US20190153008A1 (en) * | 2017-11-22 | 2019-05-23 | Samsung Electronics Co., Ltd. | Organometallic compound and organic light-emitting device including the same |
KR20190059056A (en) * | 2017-11-22 | 2019-05-30 | 삼성전자주식회사 | Organometallic compound and organic light emitting device including the same |
US10941171B2 (en) | 2017-11-22 | 2021-03-09 | Samsung Electronics Co., Ltd. | Organometallic compound and organic light-emitting device including the same |
KR102558005B1 (en) * | 2017-11-22 | 2023-07-21 | 삼성전자주식회사 | Organometallic compound and organic light emitting device including the same |
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