JP2016181725A - 長寿命リン光発光有機発光デバイス(oled)構造 - Google Patents
長寿命リン光発光有機発光デバイス(oled)構造 Download PDFInfo
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- 239000000463 material Substances 0.000 claims abstract description 497
- 239000012044 organic layer Substances 0.000 claims abstract description 422
- 239000010410 layer Substances 0.000 claims abstract description 393
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- 238000004770 highest occupied molecular orbital Methods 0.000 claims description 18
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical group C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 15
- SLGBZMMZGDRARJ-UHFFFAOYSA-N Triphenylene Natural products C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C2=C1 SLGBZMMZGDRARJ-UHFFFAOYSA-N 0.000 claims description 10
- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene Chemical group C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 claims description 9
- 125000005580 triphenylene group Chemical group 0.000 claims description 6
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 3
- IYYZUPMFVPLQIF-ALWQSETLSA-N dibenzothiophene Chemical group C1=CC=CC=2[34S]C3=C(C=21)C=CC=C3 IYYZUPMFVPLQIF-ALWQSETLSA-N 0.000 claims description 3
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- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical group [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 3
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- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical group C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 1
- DIVZFUBWFAOMCW-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n,1-n-bis[4-(n-(3-methylphenyl)anilino)phenyl]-4-n-phenylbenzene-1,4-diamine Chemical group CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 DIVZFUBWFAOMCW-UHFFFAOYSA-N 0.000 description 1
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- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
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Abstract
【解決手段】第2の有機層中の第2のリン光発光材料の濃度は、第1の有機層中の第1のリン光発光材料の濃度と異なり、界面を形成する。第1および第2の有機層中の材料は、同じでも異なっていてもよい。発光層内のこの界面に加えて、デバイスは、電子またはエキシトンがカソードから出て発光層を通り発光層のアノード側の有機層を損傷することに関連すると思われる障害メカニズムを緩和するように設計された1つまたは複数の特徴を有する。それに加えて、上述のような発光層内に界面を有し、界面の少なくとも一方の側に低エネルギー発光材料を有するデバイスが実現される。
【選択図】図3
Description
○ ドープHTL(安定したマトリックス(正孔輸送である必要はない)および正孔輸送ドーパント)の利用(潜在的にETLも)
○ HTLおよび発光層に対する同じ材料(ホストおよびドーパント)の利用
○ 発光するリン光発光緑色ドーパントおよび正孔輸送ドーパントおよび正孔注入層と同じ材料(化合物Aの実施例)の利用
○ デバイス中の阻止層として整った、EML中のホスト、HTL中のマトリックスと同じ材料(化合物Bの実施例)の利用
○ デバイス中の3つの材料のみ(実施例の化合物A、化合物B、Alq)
○ 高安定性緑色リン光発光構造(1000nit(ニト)で300,000時間を超える寿命)
トリフェニレン化合物、例えば化合物Bなどの安定したホストの利用
1.PHOLEDのホストとしてのトリフェニレン化合物
2.PHOLED中の阻止またはインピーダンス層としてのトリフェニレン化合物
3.同じOLED中のホストおよび阻止層としてのトリフェニレン化合物
4.同じOLED中のホストおよびHTLの成分としてのトリフェニレン化合物
5.同じOLED中のHTLおよび阻止層の成分としてのトリフェニレン化合物
6.同じデバイス、例えば3成分デバイス中のHTL、ホスト、および阻止層の成分としてのトリフェニレン化合物
7.電子輸送層があるものとないもののアーキテクチャ1〜6
8.化合物Bを特定のトリフェニレン化合物として使用する、アーキテクチャ1〜7
9.上記の、ただし、トリフェニレン化合物の代わりにカルバゾール化合物を安定したホストとして使用するアーキテクチャ1〜7
10.mCBPまたは化合物Rを特定のカルバゾール化合物として使用する、アーキテクチャ9
110 基板
115 アノード
120 正孔注入層
125 正孔輸送層
130 電子阻止層
135 発光層
140 正孔阻止層
145 電子輸送層
150 電子注入層
155 保護層
160 カソード
162 第1の導電層
164 第2の導電層
200 反転OLED
210 基板
215 カソード
220 発光層
225 正孔輸送層
230 アノード
310 基板
315 アノード
320 第3の有機層
330 第1の有機層
340 第2の有機層
350 正孔阻止層
360 電子輸送層
370 カソード
410 基板
415 アノード
430 第1の有機層
440 第2の有機層
450 正孔阻止層
460 電子輸送層
470 カソード
510 基板
515 アノード
520 第3の有機層
530 第1の有機層
540 第2の有機層
550 正孔阻止層
560 電子輸送層
570 カソード
610 基板
615 アノード
620 第3の有機層
630 第1の有機層
640 第2の有機層
650 正孔阻止層
660 電子輸送層
670 カソード
710 基板
715 アノード
720 第3の有機層
730 第1の有機層
740 第2の有機層
750 正孔阻止層
760 電子輸送層
770 カソード
Claims (13)
- アノードと、
カソードと、
前記アノードと前記カソードとの間に位置する発光層と、を備える有機発光デバイスであって、
前記発光層が、
第1のリン光発光材料及び第1の非発光材料を含む第1の有機層であって、
前記第1の有機層中の前記第1のリン光発光材料の濃度が10〜90重量%であり、
前記第1の有機層中の前記第1の非発光材料の濃度が10〜90重量%である、第1の有機層と、
第2のリン光発光材料及び第2の非発光材料を含む第2の有機層であって、
前記第2の有機層中の前記第2のリン光発光材料の濃度が3〜25重量%であり、
前記第2の有機層中の前記第2の非発光材料の濃度が75〜97重量%である、第2の有機層と、
前記第1の有機層と前記アノードとの間に位置する第3の有機層と、を含み、
前記第1の有機層が前記第2の有機層よりも前記アノードに近く、
前記第2の有機層中の前記第2のリン光発光材料の濃度が、前記第1の有機層中の前記第1のリン光発光材料の濃度より低く、
前記第1の非発光材料及び前記第2の非発光材料が同じ材料であり、前記第1のリン光発光材料及び前記第2のリン光発光材料が同じ材料であり、
前記第3の有機層が前記第1のリン光発光材料から本質的になり、前記第3の有機層が前記第1の有機層及び前記アノードと直接接触する、有機発光デバイス。 - 前記第1の有機層、前記第2の有機層、又はその両方が、低エネルギー発光材料をさらに含み、前記低エネルギー発光材料の濃度が0.1〜12重量%である、請求項1に記載の有機発光デバイス。
- 前記第2の有機層中の前記第2のリン光発光材料の濃度が、前記第1の有機層中の前記第1のリン光発光材料の濃度より少なくとも5重量%低い、請求項1に記載の有機発光デバイス。
- 前記第2の有機層中の前記第2のリン光発光材料の濃度が、前記第1の有機層中の前記第1のリン光発光材料の濃度より少なくとも10重量%低い、請求項1に記載の有機発光デバイス。
- 前記第1の有機層が前記第1のリン光発光材料及び前記第1の非発光材料から本質的になり、前記第2の有機層が前記第1の有機層の前記第2のリン光発光材料及び前記第2の非発光材料から本質的になる、請求項1に記載の有機発光デバイス。
- 前記第1の有機層及び前記第2の有機層の全厚が少なくとも400Åであり、前記第1の有機層の厚さが少なくとも50Åであり、前記第2の有機層の厚さが少なくとも50Åである、請求項1に記載の有機発光デバイス。
- 前記第1のリン光発光材料が前記第1の非発光材料の最高被占分子軌道より少なくとも0.3eV高い最高被占分子軌道を有し、前記第2のリン光発光材料が前記第1の非発光材料の第2の被占分子軌道より少なくとも0.3eV高い最高被占分子軌道を有する、請求項1に記載の有機発光デバイス。
- 前記第2の有機層と前記カソードとの間に位置する第4の有機層を更に含み、前記第4の有機層が前記第2の非発光材料から本質的になり、前記第4の有機層が前記第2の有機層と直接接触する、請求項1に記載の有機発光デバイス。
- 前記第2の有機層と前記カソードとの間に位置する第4の有機層を更に含み、前記第4の有機層が、前記第2のリン光発光材料の三重項エネルギーより少なくとも0.1eV高い三重項エネルギーを有する材料から本質的になり、前記第4の有機層が前記第2の有機層と直接接触する、請求項1に記載の有機発光デバイス。
- 前記第1の非発光材料が、トリフェニレン、カルバゾール、ジベンゾチオフェン、及びカルバゾールと結合したジベンゾチオフェンからなる群から選択された基を含む材料から選択される、請求項1に記載の有機発光デバイス。
- 3つ以下の異なる有機材料を含む、請求項1に記載の有機発光デバイス。
- 4つ以下の異なる有機材料を含み、前記有機材料の1つが、前記発光層と前記カソードとの間のみにおいて前記有機発光デバイス内に存在する電子輸送材料である、請求項1に記載の有機発光デバイス。
- 前記第1の有機層が前記第2の有機層と直接接触する、請求項1に記載の有機発光デバイス。
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CN104835914A (zh) | 2015-08-12 |
EP2097938B1 (en) | 2019-07-17 |
EP2097938A2 (en) | 2009-09-09 |
CN104835914B (zh) | 2018-02-09 |
WO2009030981A2 (en) | 2009-03-12 |
US20110057171A1 (en) | 2011-03-10 |
KR20090106566A (ko) | 2009-10-09 |
JP6219453B2 (ja) | 2017-10-25 |
KR101118808B1 (ko) | 2012-03-22 |
TWI605625B (zh) | 2017-11-11 |
JP5968862B2 (ja) | 2016-08-10 |
JP2014041846A (ja) | 2014-03-06 |
TWI481089B (zh) | 2015-04-11 |
JP2010515255A (ja) | 2010-05-06 |
WO2009030981A3 (en) | 2009-06-18 |
TW200901530A (en) | 2009-01-01 |
US8866377B2 (en) | 2014-10-21 |
TW201438315A (zh) | 2014-10-01 |
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