High efficiency and small roll-off electrophosphorescence from a new iridium complex with well-matched energy levels

被引：109

作者：

Gao, Zhi Qiang ^{[2
]}

Mi, Bao Xiu ^{[1
]}

Tam, Hoi Lam ^{[2
]}

Cheah, Kok Wai ^{[2
]}

Chen, Chin Hsin ^{[3
]}

Wong, Man Shing ^{[4
]}

Lee, Shuit Tong ^{[5
]}

Lee, Chun Sing ^{[5
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Inst Adv Mat, Nanjing, Peoples R China

[2] Hong Kong Baptist Univ, Ctr Adv Luminescene Mat, Kowloon, Hong Kong, Peoples R China

[3] Natl Chiao Tung Univ, Display Inst, Microelect & Informat Syst Res Ctr, Hsinchu 300, Taiwan

[4] Hong Kong Baptist Univ, Dept Chem, Kowloon, Hong Kong, Peoples R China

[5] City Univ Hong Kong, Dept Phys & Mat Sci, Ctr Super Diamond & Adv Films COSDAF, Kowloon, Hong Kong, Peoples R China

来源：

ADVANCED MATERIALS | 2008年 / 20卷 / 04期

关键词：

D O I：

10.1002/adma.200702343

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phenylpyridazine ligands coordinating to the iridium(III) atom yield a thermally stable (5 % weight loss at 439 degrees C) homoleptic iridium complex with a high phosphorescent quantum yield (0.32 at room temperature). This material has well-matched energy levels with the host, and highly efficient electrophosphorescence (52 cd A(-1); see figure) with a small roll-off (23 % at 70 mA cm(-2)) in device efficiency is achieved.

引用

页码：774 / +

页数：6

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