Stable Efficiency Roll-off in Solution-processed Phosphorescent Green Organic Light-emitting Diodes

被引：3

作者：

Park, Jung Joo ^{[1
]}

Lee, Seong Taek ^{[1
]}

Park, Tae Jin ^{[1
]}

Jeon, Woo Sik ^{[1
]}

Jang, Jin ^{[1
]}

Kwon, Jang Hyuk ^{[1
]}

Pode, Ramchandra ^{[2
]}

机构：

[1] Kyung Hee Univ, Dept Informat Display, Seoul 130701, South Korea

[2] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2009年 / 55卷 / 01期

关键词：

Efficiency roll-off; Phosphorescent OLEDs; Solution process; ELECTROPHOSPHORESCENCE;

D O I：

10.3938/jkps.55.327

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a mixed host system of hole transport, 4,4',4 ''-tris(N-carbazolyl)triphenylamine (TCFA), and electron transport, 1,3,5-tris(N-phenlybenzimidazole-2-yl)benzene (TPBI), materials, we report; stable efficiency roll-off in solution-processed phosphorescent. green organic light-emitting diodes. Maximum current and power efficiencies of 28.2 cd/A and 13.2 lm/W, respectively, were achieved. The current efficiency was over 90% of the maximum value at a luminance of 20,000 cd/m(2) in this device, which is very high compared to values reported earlier for an,), solution-processed triplet devices.

引用

页码：327 / 330

页数：4

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