WO2012128116A1 - 有機エレクトロルミネッセンス素子、照明器具、及び食品保管装置 - Google Patents
有機エレクトロルミネッセンス素子、照明器具、及び食品保管装置 Download PDFInfo
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- WO2012128116A1 WO2012128116A1 PCT/JP2012/056351 JP2012056351W WO2012128116A1 WO 2012128116 A1 WO2012128116 A1 WO 2012128116A1 JP 2012056351 W JP2012056351 W JP 2012056351W WO 2012128116 A1 WO2012128116 A1 WO 2012128116A1
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
- H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/30—Lighting for domestic or personal use
- F21W2131/305—Lighting for domestic or personal use for refrigerators
Definitions
- Organic electroluminescence devices can be used as flat panel displays, backlights for liquid crystal display devices, light sources for illumination, etc. due to their ability to emit surface light with high voltage and low voltage. It attracts attention as a generation light source.
- An organic electroluminescence device is a multi-unit device including a first light emitting unit, a second light emitting unit, and an intermediate layer interposed between the first light emitting unit and the second light emitting unit. Preferably there is.
- this organic electroluminescence element 1 a substrate 14, a first electrode 15, a first light emitting unit 11, an intermediate layer 13, a second light emitting unit 12, and a second electrode 16 are laminated in this order. It has a structure.
- the first electrode 15 can be formed using these materials by an appropriate method such as a vacuum deposition method, a sputtering method, or an application method.
- the light transmittance of the first electrode 15 is preferably 70% or more, and more preferably 90% or more.
- the sheet resistance of the first electrode 15 is preferably several hundred ⁇ / ⁇ or less, and particularly preferably 100 ⁇ / ⁇ or less.
- the thickness of the first electrode 15 is appropriately set so that characteristics such as the light transmittance and sheet resistance of the first electrode 15 have a desired level. Although the preferred thickness of the first electrode 15 varies depending on the material constituting the first electrode 15, the thickness of the first electrode 15 is set to 500 nm or less, preferably in the range of 10 to 200 nm.
- the second electrode 16 functions as a cathode.
- the cathode in the organic electroluminescence element 1 is an electrode for injecting electrons into the light emitting layer 2.
- the second electrode 16 is preferably formed from a material such as a metal, an alloy, an electrically conductive compound, or a mixture thereof having a small work function.
- the second electrode 16 is preferably formed of a material having a work function of 5 eV or less. That is, the work function of the second electrode 16 is preferably 5 eV or less.
- Examples of the material for forming the second electrode 16 include Al, Ag, MgAg, and the like.
- the second electrode 16 can also be formed from an Al / Al 2 O 3 mixture or the like.
- the electron transporting material include fluorene, bathophenanthroline, bathocuproine, anthraquinodimethane, diphenoquinone, oxazole, oxadiazole, triazole, imidazole, anthraquinodimethane, 4,4′-N, N′-dicarbazole.
- Biphenyl (CBP) and the like, compounds thereof, metal complex compounds, nitrogen-containing five-membered ring derivatives and the like can be mentioned.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
Y=α×Rx+β×Gx+γ×Bx+(定数項)
(α、β、γは係数)
と近似したときの、Rx、Gx、BxのYに対する寄与度を計算すればよい。
ガラス基板14上にITOを厚み130nmに成膜することで第一の電極15を形成した。更に第一の電極15の上にPEDOT/PSSからなる厚み35nmのホール注入層を湿式法により形成した。続いてホール輸送層3、青領域発光層21(蛍光発光)、第一の緑色域発光層22(蛍光発光)、電子輸送層4を、蒸着法により5nm~60nmの厚みに順次形成した。次に、Alq3/Li2O/Alq3/HAT-CN6の層構造を有する中間層13を層厚15nmで積層した。次に、ホール輸送層3、赤色域発光層23(燐光発光)、第二の緑色域発光層24(燐光発光)、電子輸送層4を、各層が最大50nmの膜厚で順次形成した。続いて、Li膜からなる電子注入層、Al膜からなる第二の電極16を順次形成した。赤色域発光層23の厚みは5nm、第二の緑色域発光層24の厚みは40nmとした。これにより、有機エレクトロルミネッセンス素子1を得た。
ガラス基板14上にITOを厚み130nmに成膜することで第一の電極15を形成した。更に第一の電極15の上にPEDOT/PSSからなる厚み35nmのホール注入層を湿式法により形成した。続いてホール輸送層3、青領域発光層21(蛍光発光)、第一の緑色域発光層22(蛍光発光)、電子輸送層4を、蒸着法により5nm~60nmの厚みに順次形成した。次に、Alq3/Li2O/Alq3/HAT-CN6の層構造を有する中間層13を層厚15nmで積層した。次に、ホール輸送層3、赤色域発光層23(燐光発光)、第二の緑色域発光層24(燐光発光)、電子輸送層4を、各層が最大50nmの膜厚で順次形成した。続いて、Li膜からなる電子注入層、Al膜からなる第二の電極16を順次形成した。赤色域発光層23の厚みは2nm、第二の緑色域発光層24の厚みは40nmとした。これにより、有機エレクトロルミネッセンス素子1を得た。
2 発光層
3 照明器具
Claims (14)
- 素子温度5℃以上60℃以下の範囲における平均演色評価数Raの最大値が、素子温度15℃以上35℃以下の範囲にあり、
素子温度5℃以上60℃以下の範囲における特殊演色評価数R10、特殊演色評価数R11、特殊演色評価数R12、及び特殊演色評価数R13のうち少なくとも一つの最大値が、素子温度5℃以上35℃以下の範囲にある特性を有する有機エレクトロルミネッセンス素子。 - 素子温度5℃以上60℃以下の範囲における特殊演色評価数R10、特殊演色評価数R11、特殊演色評価数R12、及び特殊演色評価数R13のうち少なくとも一つの最大値が、素子温度15℃以上35℃以下の範囲にある請求項1に記載の有機エレクトロルミネッセンス素子。
- 平均演色評価数Ra、特殊演色評価数R10、特殊演色評価数R11、特殊演色評価数R12、及び特殊演色評価数R13のうち少なくとも一つが、
素子温度5℃以上25℃以下の範囲におけるその最大値とその最小値との比が0.8以上であり、且つその値が70以上となる条件を満たす請求項1又は2に記載の有機エレクトロルミネッセンス素子。 - 素子温度5℃において、特殊演色評価数R13、特殊演色評価数R10、特殊演色評価数R12が、この順番に順次小さくなり、
素子温度5℃において、特殊演色評価数R13、特殊演色評価数R11、特殊演色評価数R12が、この順番に順次小さくなり、
素子温度5℃において、特殊演色評価数R13、平均演色評価数Ra、特殊演色評価数R12が、この順番に順次小さくなる請求項1乃至3のいずれか一項に記載の有機エレクトロルミネッセンス素子。 - 素子温度25℃の場合よりも素子温度5℃の場合の方が、前記有機エレクトロルミネッセンス素子を構成する複数の層の積層方向と一致する方向の発光色の、u’v’色度図のu’の値がより減少すると共にv’の値がより増加する請求項1乃至4のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 素子温度25℃の場合よりも素子温度5℃の場合の方が、発光色の色温度が高い請求項1乃至5のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 素子温度25℃の場合よりも素子温度5℃の場合の方が、前記有機エレクトロルミネッセンス素子を構成する複数の層の積層方向と一致する方向の発光色の、u’v’色度図のu’の値がより増加すると共にv’の値がより増加する請求項1乃至4のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 素子温度25℃の場合よりも素子温度5℃の場合の方が、発光色の色温度が低い請求項1乃至4及び7のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 緑色域の光を発する発光層を複数備え、前記複数の発光層のうちの少なくとも一つが、燐光発光性のドーパントを含有する請求項1乃至8のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 赤色域の光を発する赤色域発光層と、
この赤色域発光層に積層し、燐光発光性のドーパントを含有し、緑色域の光を発する緑色域発光層とを備え、
前記赤色域発光層の厚みが、前記緑色域発光層の厚みよりも小さい請求項1乃至9のいずれか一項に記載の有機エレクトロルミネッセンス素子。 - 前記緑色域発光層の厚みに対する、前記赤色域発光層の厚みの比率が、2~15%の範囲である請求項10に記載の有機エレクトロルミネッセンス素子。
- 第一の発光ユニット、第二の発光ユニット、及び前記第一の発光ユニットと前記第二の発光ユニットとの間に介在する中間層を備える請求項1乃至11のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 請求項1乃至12のいずれか一項に記載の有機エレクトロルミネッセンス素子を備える照明器具。
- 食品を保管するように構成されている保管器具と、前記保管器具内を照らすように構成されている請求項13に記載の照明器具とを備える食品保管装置。
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US14/006,415 US9076979B2 (en) | 2011-03-24 | 2012-03-13 | Organic electroluminescent element, lighting fixture, and food storage device |
CN201280020978.3A CN103503569A (zh) | 2011-03-24 | 2012-03-13 | 有机电致发光元件、照明器具和食品贮藏设备 |
DE112012001414.6T DE112012001414B4 (de) | 2011-03-24 | 2012-03-13 | Organisches Elektrolumineszenz-Element, Beleuchtungskörper und Lebensmittellagervorrichtung |
JP2013505907A JP5685733B2 (ja) | 2011-03-24 | 2012-03-13 | 有機エレクトロルミネッセンス素子、照明器具、及び食品保管装置 |
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Also Published As
Publication number | Publication date |
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US9076979B2 (en) | 2015-07-07 |
JP5685733B2 (ja) | 2015-03-18 |
JPWO2012128116A1 (ja) | 2014-07-24 |
DE112012001414T8 (de) | 2014-04-10 |
DE112012001414B4 (de) | 2017-07-13 |
CN103503569A (zh) | 2014-01-08 |
US20140009918A1 (en) | 2014-01-09 |
DE112012001414T5 (de) | 2014-01-30 |
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