Highly Efficient Organic Light-Emitting Diode Based on a Hidden Thermally Activated Delayed Fluorescence Channel in a Heptazine Derivative

被引：640

作者：

Li, Jie ^{[1
,2
]}

Nakagawa, Tetsuya ^{[1
,2
]}

MacDonald, James ^{[1
,2
,3
]}

Zhang, Qisheng ^{[1
,2
]}

Nomura, Hiroko ^{[1
,2
]}

Miyazaki, Hiroshi ^{[1
,2
,4
]}

Adachi, Chihaya ^{[1
,2
,5
]}

机构：

[1] Kyushu Univ, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan

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

[3] CSIRO, Mat Sci & Engn, Clayton, Vic 3168, Australia

[4] Nippon Steel & Sumikin Chem Co Ltd, Funct Mat Lab, Kitakyushu, Fukuoka 8048503, Japan

[5] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan

来源：

ADVANCED MATERIALS | 2013年 / 25卷 / 24期

关键词：

organic light-emitting diode; thermally activated delayed fluorescence; heptazine; orange-red device; EXTERNAL QUANTUM EFFICIENCY; COMPLEXES; GREEN; PHOSPHORS; EMISSION; DEVICES; DESIGN;

D O I：

10.1002/adma.201300575

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

An orange-red organic light-emitting diode containing a heptazine derivative exhibits high performance with a maximum external quantum efficiency of 17.5 ± 1.3% and a peak luminance of 17000 ± 1600 cd m -2 without any light out-coupling enhancement. The high electroluminescence performance can be ascribed to the presence of an efficient up-conversion channel from the lowest triplet state to the lowest singlet state. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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页码：3319 / 3323

页数：5

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