JP2013509670A - 多層有機素子 - Google Patents
多層有機素子 Download PDFInfo
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
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- H—ELECTRICITY
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- 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
- H10K85/146—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE poly N-vinylcarbazol; Derivatives thereof
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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Abstract
【選択図】図1
Description
高分子(長)−溶媒A (HTL、16)
高分子(中)−溶媒A’ (1stEML、18a)
高分子(短)−溶媒A’’ (2ndEML、18b)
HTL: 高分子:モノマー数5000 溶媒:クロロベンゼン
1stEML: 高分子:モノマー数2500 溶媒:トルエン
2ndEML: 高分子:モノマー数450 溶媒:メタノールおよびトルエン
(1:1)
図6に示す第1実施例に関して、素子100は、最初に、インジウムスズ酸化物(ITO)102から作られるパターンのあるアノードを支持する、ガラス基板を有する(図6に図示せず)。導電性高分子、ポリ(3,4−エチレンジオキシチオフェン)/ポリ(スチレンスルフォネート)(PEDOT:PSS)104からなる正孔注入層104が、インジウムスズ酸化物102上に堆積される。さらに、PEDOT:PSS上に、正孔輸送層(HTL)としての役割を果たす、平均分子量の高いポリ(ビニルカルバゾール)(PVKH)108が堆積される。その後の放射層(EML)110は、リン光放射体種(an phosphorescent emitter species)Ir(ppy)3を添加された、分子量の低いポリ(ビニルカルバゾール)を有する。バリウムアルミニウムカソード112が、公知の蒸発技術を使用して放射層110上に堆積される。
h(PVK)+e(PBD)→(PVK:PBD)*→λ=430nmでのエキシプレックス放射
h(PVK)+e(PBD)+Ir(ppy)3 → PVK+PBD+Ir(ppy)3 * → λ=512nmでの励起子放射
PVKが良好な正孔輸送高分子であることはよく知られている。加えて、PVKはまた、その高い三重項エネルギー準位2.6−2.7eVのために、多くのリン光ドーパントに対するホスト材料として広く使用されている。
多層有機素子の具体的な第2実施例の構造が、図12から14に示される。この実施形態は、背面照明または全般照明アプリケーション用の、白色光発生のための、いわゆる多色有機LEDを形成する。
Claims (20)
- アノード(12)およびカソード(20)を支える基板を有し、
少なくとも、第1有機半導体材料を有する第1層(16);および前記第1層(16)上の第2有機半導体材料を有する第2層(18)が、前記アノード(12)と前記カソード(20)の間に設置され;
前記第1有機半導体材料は高分子であり、および前記第2有機半導体材料は高分子またはオリゴマーであって、前記第1有機半導体材料の平均分子量は前記第2有機半導体材料の平均分子量より高い、ことを特徴とする、
多層有機素子(10)。 - 異なる有機半導体材料の層が2層より多く前記アノード(12)と前記カソード(20)の間に設置され、1つの層の平均分子量は、その次の層の平均分子量より高い、
請求項1に記載の多層有機素子。 - 前記第1および第2有機半導体材料は同一のHOMO準位を有する、
請求項1または2に記載の多層有機素子。 - 前記第1および第2有機半導体材料は同じ高分子を有し、前記第1層(16)の高分子の平均長さは前記第2層(18)の高分子の平均長さより長い、
請求項3に記載の多層有機素子。 - 前記第1有機半導体材料は単独で層中に供給される、
請求項1〜4のいずれか一項に記載の多層有機素子。 - 前記第2有機半導体材料は不純物が添加されている、
請求項1〜5のいずれか一項に記載の多層有機素子。 - 前記第2有機半導体材料は電界発光層(18)に供給される、
請求項1〜6のいずれか一項に記載の多層有機素子。 - 前記第2有機半導体材料は前記電界発光層(18)に供給され、該材料は放射種のホストとしての役割を果たす、
請求項7に記載の多層有機素子。 - 前記電界発光層(18)は1つまたはそれ以上のリン光を発する部分を有し、前記材料は前記1つまたはそれ以上のリン光を発する部分のホストとしての役割を果たす、
請求項7または8に記載の多層有機素子。 - また、前記第1有機半導体材料は光放射材料のホストとしての役割を果たす、
請求項7〜9のいずれか一項に記載の多層有機素子。 - 前記第1有機半導体材料は黄色放射材料のホストとしての役割を果たし、および前記第2有機半導体材料は青色または青緑色放射材料のホストとしての役割を果たす、
請求項10に記載の多層有機素子。 - 前記第2有機半導体材料は、他の高分子、デンドリマーまたは小分子との混合層に供給される、
請求項1〜11のいずれか一項に記載の多層有機素子。 - 前記第1有機半導体高分子は電荷輸送層に供給される、
請求項1〜12のいずれか一項に記載の多層有機素子。 - 前記電荷輸送層は正孔輸送層(16)である、
請求項13に記載の多層有機素子。 - 前記第1および第2有機半導体材料はポリ(ビニルカルバゾール)である、
請求項1〜14のいずれか一項に記載の多層有機素子。 - 前記有機半導体材料の平均分子量は、高平均分子量と低平均分子量である、
請求項1〜15のいずれか一項に記載の多層有機素子。 - 基板を準備し、
前記基板上にアノード(12)を堆積し、
溶解処理工程によって、前記アノード(12)上に、少なくとも第1有機半導体材料を有する第1層(16)、および前記第1層(16)上に第2有機半導体材料を有する第2層(18)を堆積する、工程を有し;
前記第1有機半導体材料は高分子であり、および前記第2有機半導体材料は高分子またはオリゴマーであって、前記第1有機半導体材料の平均分子量は前記第2有機半導体材料の平均分子量より高い、ことを特徴とする、
多層有機素子(10)の作製方法。 - 前記第1層(16)は堆積後に熱的にベークされる、
請求項17に記載の多層有機素子の作製方法。 - 前記第2層(18)は堆積後に熱的にベークされる
請求項18に記載の多層有機素子の作製方法。 - 前記溶解処理工程はスピンコートまたはインクジェット印刷である
請求項17〜19のいずれか一項に記載の多層有機素子の作製方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0917393.1 | 2009-10-05 | ||
GB0917393A GB0917393D0 (en) | 2009-10-05 | 2009-10-05 | Multilayer organic device |
EP09252823.1 | 2009-12-18 | ||
EP09252823 | 2009-12-18 | ||
PCT/EP2010/064844 WO2011042443A1 (en) | 2009-10-05 | 2010-10-05 | Multilayer organic device |
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JP2013509670A true JP2013509670A (ja) | 2013-03-14 |
JP5732463B2 JP5732463B2 (ja) | 2015-06-10 |
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US (1) | US9054317B2 (ja) |
EP (1) | EP2471116B1 (ja) |
JP (1) | JP5732463B2 (ja) |
KR (1) | KR20120103571A (ja) |
CN (1) | CN102668149B (ja) |
WO (1) | WO2011042443A1 (ja) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012212879A (ja) * | 2011-03-23 | 2012-11-01 | Semiconductor Energy Lab Co Ltd | 発光素子 |
JP2012216829A (ja) * | 2011-03-30 | 2012-11-08 | Semiconductor Energy Lab Co Ltd | 発光素子 |
JP2014033236A (ja) * | 2011-02-16 | 2014-02-20 | Semiconductor Energy Lab Co Ltd | 発光素子、発光装置、照明装置及び電子機器 |
JP2014045176A (ja) * | 2012-08-03 | 2014-03-13 | Semiconductor Energy Lab Co Ltd | 発光素子、発光装置、電子機器、照明装置及び複素環化合物 |
JP2014056814A (ja) * | 2012-08-10 | 2014-03-27 | Semiconductor Energy Lab Co Ltd | 発光素子、発光装置、表示装置、電子機器及び照明装置 |
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EP2471116A1 (en) | 2012-07-04 |
CN102668149A (zh) | 2012-09-12 |
CN102668149B (zh) | 2016-04-20 |
EP2471116B1 (en) | 2013-12-11 |
US9054317B2 (en) | 2015-06-09 |
JP5732463B2 (ja) | 2015-06-10 |
US20120267618A1 (en) | 2012-10-25 |
WO2011042443A1 (en) | 2011-04-14 |
KR20120103571A (ko) | 2012-09-19 |
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