Highly efficient red electrophosphorescent devices at high current densities

doi:10.1016/j.jlumin.2006.01.244

	Highly efficient red electrophosphorescent devices at high current densities
	Wu, Youzhi 2; Zhu, Wenqing 1; Zheng, Xinyou 1; Sun, Runguang 1; Jiang, Xueyin 1; Zhang, Zhilin 1; Xu, Shaohong 1
刊名	Journal of Luminescence
	2007
卷号	122-123 期号:1-2 页码:629-632
关键词	Complexation Current density Excitons Phosphorescence Quantum theory
ISSN号	00222313
DOI	10.1016/j.jlumin.2006.01.244
英文摘要	Efficiency decrease at high current densities in red electrophosphorescent devices is drastically restrained compared with that from conventional electrophosphorescent devices by using bis(2-methyl-8-quinolinato)4-phenylphenolate aluminum (BAlq) as a hole and exciton blocker. Ir complex, bis(2-(2′-benzo[4,5-α]thienyl) pyridinato-N,C3′) iridium (acetyl-acetonate) is used as an emitter, maximum external quantum efficiency (QE) of 7.0% and luminance of 10 000 cd/m2 are obtained. The QE is still as high as 4.1% at higher current density J = 100 mA / cm2. CIE-1931 co-ordinates are 0.672, 0.321. A carrier trapping mechanism is revealed to dominate in the process of electroluminescence. © 2006 Elsevier B.V. All rights reserved.
WOS研究方向	Optics
语种	英语
出版者	Elsevier
WOS记录号	WOS:000242991900185
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151451]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Shanghai University, Jiading, Shanghai, 201800, China 2.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, China;
推荐引用方式 GB/T 7714	Wu, Youzhi,Zhu, Wenqing,Zheng, Xinyou,et al. Highly efficient red electrophosphorescent devices at high current densities[J]. Journal of Luminescence,2007,122-123(1-2):629-632.
APA	Wu, Youzhi.,Zhu, Wenqing.,Zheng, Xinyou.,Sun, Runguang.,Jiang, Xueyin.,...&Xu, Shaohong.(2007).Highly efficient red electrophosphorescent devices at high current densities.Journal of Luminescence,122-123(1-2),629-632.
MLA	Wu, Youzhi,et al."Highly efficient red electrophosphorescent devices at high current densities".Journal of Luminescence 122-123.1-2(2007):629-632.