High efficiency organic light-emitting diodes with yellow phosphorescent emission based on a novel iridium complex

被引：39

作者：

Wang, Jun ^{[1
]}

Yu, Junsheng ^{[1
]}

Lin, Hui ^{[1
]}

Jiang, Yadong ^{[1
]}

Lou, Shuangling ^{[1
]}

Yang, Gang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Sch Optoelect Informat, Chengdu 610054, Peoples R China

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2007年 / 22卷 / 02期

关键词：

D O I：

10.1088/0268-1242/22/2/005

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multilayer phosphorescent organic light-emitting diodes with bright yellow light emission based on novel bis[2-(4-tert-butylphenyl) benzothiazolato-N, C-2'] iridium (acetylacetonate) [(t-bt)(2)Ir(acac)] were fabricated. The device structure is ITO/CuPc (15 nm)/NPB (15 nm)/CBP: (t-bt)(2)Ir(acac) (5 wt%, 30 nm)/BCP (20 nm)/Alq (20 nm)/LiF (1nm)/Al (100 nm). Electroluminescent (EL) spectra of the device have a main peak at 560 nm with a shoulder at 596 nm ascribed to (t-bt)(2)Ir(acac) phosphor and a weak peak from the NPB layer. A maximum luminance of 10 500 cd m(-2) at a driving voltage of 12.5 V and current density of 188 mA cm(-2) and a maximum external quantum efficiency of 6.1% at 4.2 V were achieved.

引用

页码：25 / 28

页数：4

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