JP2010187014A - 発光素子、発光素子を用いた発光装置及び発光装置を用いた電気器具 - Google Patents
発光素子、発光素子を用いた発光装置及び発光装置を用いた電気器具 Download PDFInfo
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- JP2010187014A JP2010187014A JP2010099451A JP2010099451A JP2010187014A JP 2010187014 A JP2010187014 A JP 2010187014A JP 2010099451 A JP2010099451 A JP 2010099451A JP 2010099451 A JP2010099451 A JP 2010099451A JP 2010187014 A JP2010187014 A JP 2010187014A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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Abstract
【解決手段】陽極と、陰極と、陽極と陰極との間に設けられた発光層と、発光層の陰極側に接して設けられたホールブロック層と、を有する発光素子であって、ホールブロック層は、発光層のイオン化ポテンシャルより大きいイオン化ポテンシャルを有するホールブロック材料と、ホールブロック材料とは異なる一種類、または複数種類の材料と、から構成されている。ホールブロック材料とは異なる材料として、最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値が、発光層の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値よりも大きい材料を用いる。
【選択図】図1
Description
本比較例は実施例1の比較例である。従来のホールブロック層を適用した有機発光素子を作製し、その際の特性を本発明の素子と比較した。
本比較例は実施例2の比較例である。従来のホールブロック層を適用した有機発光素子を作製し、その際の特性を実施例2の有機発光素子の特性と比較した。
Claims (11)
- 陽極と、陰極と、前記陽極と前記陰極との間に設けられた発光層と、前記発光層の陰極側に接して設けられたホールブロック層と、を有し、
前記ホールブロック層は、前記発光層のイオン化ポテンシャルより大きいイオン化ポテンシャルを有するホールブロック材料と、前記ホールブロック材料とは異なる一種類、または複数種類の材料と、からなり、
前記ホールブロック材料とは異なる前記材料の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値が、前記発光層の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値よりも大きいことを特徴とする発光素子。 - 陽極と、陰極と、前記陽極と前記陰極との間に設けられた発光層と、前記発光層の陰極側に接して設けられたホールブロック層と、を有し、
前記ホールブロック層は、前記発光層のイオン化ポテンシャルより大きいイオン化ポテンシャルを有するホールブロック材料と、前記ホールブロック材料とは異なる一種類、または複数種類の材料と、からなり、
前記ホールブロック材料とは異なる前記材料はn型有機半導体であり、
前記n型有機半導体の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値が、前記発光層の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値よりも大きいことを特徴とする発光素子。 - 請求項2において、前記ホールブロック材料は、OXD−7、TAZ、p−EtTAZ、BPhen、BCPのいずれか一であることを特徴とする発光素子。
- 陽極と、陰極と、前記陽極と前記陰極との間に設けられた発光層と、前記発光層の陰極側に接して設けられたホールブロック層と、を有し、
前記ホールブロック層は、前記発光層のイオン化ポテンシャルより大きいイオン化ポテンシャルを有するホールブロック材料と、前記ホールブロック材料とは異なる一種類、または複数種類の材料と、からなり、
前記ホールブロック材料とは異なる前記材料の価電子帯の上端の値と伝導帯の底の値とのエネルギーギャップの値が、前記発光層の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値よりも大きいことを特徴とする発光素子。 - 陽極と、陰極と、前記陽極と前記陰極との間に設けられた発光層と、前記発光層の陰極側に接して設けられたホールブロック層と、を有し、
前記ホールブロック層は、前記発光層のイオン化ポテンシャルより大きいイオン化ポテンシャルを有するホールブロック材料と、前記ホールブロック材料とは異なる一種類、または複数種類の材料と、からなり、
前記ホールブロック材料とは異なる前記材料はn型無機半導体であり、
前記n型無機半導体の価電子帯の上端の値と伝導帯の底の値とのエネルギーギャップの値が、前記発光層の最高被占分子軌道準位と最低空分子軌道準位とのエネルギーギャップの値よりも大きいことを特徴とする発光素子。 - 請求項1乃至5のいずれか一において、前記ホールブロック材料とは異なる前記材料の吸収端のエネルギーの値が、前記発光層の吸収端のエネルギーの値よりも大きいことを特徴とする発光素子。
- 請求項1乃至6のいずれか一において、前記ホールブロック層のイオン化ポテンシャルの値が、前記発光層のイオン化ポテンシャルの値よりも0.4eV以上大きいことを特徴とする発光素子。
- 請求項1乃至7のいずれか一において、前記ホールブロック層のイオン化ポテンシャルの値が5.8eV以上であることを特徴とする発光素子。
- 請求項1乃至8のいずれか一に記載の発光素子を用いた発光装置。
- 請求項9に記載の発光装置を用いた電気器具。
- 請求項10に記載の電気器具は、ビデオカメラ、デジタルカメラ、ゴーグル型ディスプレイ、ナビゲーションシステム、音響再生装置、ノート型パーソナルコンピュータ、ゲーム機器、携帯情報端末、及び記録媒体を備えた画像再生装置のいずれか一である電気器具。
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JP2012104806A (ja) * | 2010-10-15 | 2012-05-31 | Jnc Corp | 発光層用材料およびこれを用いた有機電界発光素子 |
CN103682114A (zh) * | 2012-09-14 | 2014-03-26 | 株式会社东芝 | 有机电致发光器件 |
JP2014529894A (ja) * | 2011-08-22 | 2014-11-13 | メルク パテント ゲーエムベーハー | 有機エレクトロルミネッセンス素子 |
JP2015502049A (ja) * | 2011-11-28 | 2015-01-19 | オーシャンズ キング ライティング サイエンス アンド テクノロジー シーオー.,エルティーディー | ポリマーエレクトロルミネッセスデバイス、及び、その製造方法 |
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KR100672535B1 (ko) * | 2005-07-25 | 2007-01-24 | 엘지전자 주식회사 | 유기 el 소자 및 그 제조방법 |
KR100792139B1 (ko) * | 2006-02-06 | 2008-01-04 | 주식회사 엘지화학 | 전자주입층으로서 무기절연층을 이용한 유기발광소자 및이의 제조 방법 |
TWI638583B (zh) | 2007-09-27 | 2018-10-11 | 半導體能源研究所股份有限公司 | 發光元件,發光裝置,與電子設備 |
KR20160049500A (ko) | 2014-10-27 | 2016-05-09 | 주식회사 엘지화학 | 유기 전계 발광 소자 |
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