3,6-Diarylcarbazole Derivatives as a Host Material in Organic Electrophosphorescent Diodes

被引：4

作者：

Muneuchi, Kenji ^{[1
]}

Sasaki, Masaomi ^{[2
]}

Sasabe, Hiroyuki ^{[1
]}

Adachi, Chihaya ^{[1
,3
]}

机构：

[1] Chitose Inst Sci & Technol, Dept Photon Mat Sci, Chitose, Hokkaido 0668655, Japan

[2] Ricoh Co Ltd, R&D Ctr, Tsuzuki Ku, Yokohama, Kanagawa 2240035, Japan

[3] Kyushu Univ, Ctr Future Chem, Nishi Ku, Fukuoka 8190395, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2010年 / 49卷 / 08期

关键词：

LIGHT-EMITTING DEVICES; WIDE ENERGY-GAP; EFFICIENCY; BLUE;

D O I：

10.1143/JJAP.49.080208

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We synthesized 3,6-diarylcarbazole (CBZ) derivatives and investigated their thin-film optical (i e, absorption, fluorescence and phosphorescence) properties and electroluminescence characteristics We fabricated phosphorescent organic light-emitting diodes (OLEDs) employing CBZ derivatives as the host and fac-tris(2-phenypyridine)iridium [Ir(ppy)(3)] as the guest at a doping concentration of 6 wt % These devices exhibited maximum external quantum efficiencies (eta(ext)) in the range 1 to 11%, depending on the host In particular, the OLED with CBZ7 as the host exhibited the highest eta(ext) of 11 2% and a maximum power conversion efficiency (eta(energy)) of 25Im/W (C) 2010 The Japan Society of Applied Physics

引用

页数：2

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