Efficient organic light-emitting diodes through up-conversion from triplet to singlet excited states of exciplexes

被引：243

作者：

Goushi, Kenichi

Adachi, Chihaya ^{[1
]}

机构：

[1] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, Fukuoka 8190395, Japan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 02期

关键词：

DELAYED FLUORESCENCE; DEVICES; ELECTROLUMINESCENCE;

D O I：

10.1063/1.4737006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Enhanced electroluminescence efficiency is achieved in organic light-emitting diodes through delayed fluorescence of the exciplex state formed between 4,40,4 ''-tris[3-methylphenyl(phenyl) amino]triphenylamine (m-MTDATA) as an electron-donating material and 2,8-bis(diphenylphosphoryl) dibenzo[b,d]thiophene (PPT) as an electron-accepting material. The devices exhibited maximum external electroluminescence quantum and power efficiencies of 10.0% and 47.0 lm/W, respectively. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4737006]

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