The influence of type-I and type-II triplet multiple quantum well structure on white organic light-emitting diodes

	The influence of type-I and type-II triplet multiple quantum well structure on white organic light-emitting diodes
	Zhao B.; Su Z.; Li W.; Chu B.; Jin F.; Yan X.; Zhang T.; Zhang F.; Fan D.; Gao Y.; Wang J.; Pi H.; Zhu J.
	2013
发表期刊	Nanoscale Research Letters
ISSN	ISBN/19317573
卷号	8 期号:1
摘要	We demonstrate high-efficient white organic light-emitting diodes (WOLEDs) based on triplet multiple quantum well (MQW) structure and focus on the influence on WOLEDs through employing different potential barrier materials to form type-I and type-II MQWs, respectively. It is found that type-I MQW structure WOLEDs based on 1,3,5-tris(N-phenyl-benzimidazol-2-yl)benzene as potential barrier layer (PBL) offers high electroluminescent (EL) performance. That is to say, maximum current efficiency and power efficiency are achieved at about 1,000 cd/m2 with 16.4 cd/A and 8.3 lm/W, which increase by 53.3% and 50.9% over traditional three-layer structure WOLEDs, respectively, and a maximum luminance of 17,700 cd/m2 is earned simultaneously. The achievement of high EL performance would be attributed to uniform distribution and better confinement of carriers within the emitting layer (EML). However, when 4,7-diphenyl-1,10-phenanthroline or 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline is used as PBL to form type-II MQW structure, poor EL performance is obtained. We attribute that to improper energy level alignment between the interface of EML/PBL, which leads to incomplete confinement and low recombination efficiency of carriers, a more detailed mechanism was argued. 2013 Zhao et al.; licensee Springer.
收录类别	EI
WOS记录号	BMC:10.1186/1556-276X-8-529
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40716
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhao B.,Su Z.,Li W.,et al. The influence of type-I and type-II triplet multiple quantum well structure on white organic light-emitting diodes[J]. Nanoscale Research Letters,2013,8(1).
APA	Zhao B..,Su Z..,Li W..,Chu B..,Jin F..,...&Zhu J..(2013).The influence of type-I and type-II triplet multiple quantum well structure on white organic light-emitting diodes.Nanoscale Research Letters,8(1).
MLA	Zhao B.,et al."The influence of type-I and type-II triplet multiple quantum well structure on white organic light-emitting diodes".Nanoscale Research Letters 8.1(2013).

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