High-Brightness, Broad-Spectrum White Organic Electroluminescent Device Obtained by Designing Light-Emitting Layers as also Carrier Transport Layers

	High-Brightness, Broad-Spectrum White Organic Electroluminescent Device Obtained by Designing Light-Emitting Layers as also Carrier Transport Layers
	Zhou LA ; Li XN ; Li XY ; Feng J ; Song SY ; Zhang HJ
刊名	journal of physical chemistry c
	2010
卷号	114 期号:49 页码:21723-21727
关键词	TRANSIENT ANALYSIS HIGH-EFFICIENCY DIODES PERFORMANCE EMISSION DERIVATIVES ENERGY ELECTROPHOSPHORESCENCE
ISSN号	1932-7447
通讯作者	zhang hj
中文摘要	in this study, we demonstrated an efficient energy level alignment technology to design a white organic electroluminescent (el) device consisting of two light-emitting layers (emls) and a hole block layer. by doping green and red dopants into blue-emitting and green-emitting host materials with hole and electron transport abilities, respectively, the two emls are designed as also hole and electron transport layers. interestingly, not only the doping concentrations but also the layer thicknesses strongly influence device performance, especially the el spectrum. after optimization, broad-spectrum white electroluminescence with maximum current efficiency of 8.02 cd/a and power efficiency of 9.33 lm/w was obtained. with increasing current density, el efficiency decreases first and then keeps constant at about 6.0 cd/a. therefore, this device achieves the maximum brightness as high as 35788.0 cd/m(2). at the brightness of 20000 cd/m(2), this device has the commission internationale de l'eclairage (cie) coordinates of (0.328, 0.336). with the help of energy levels and el spectra, injection, transport, distribution, and recombination of holes and electrons in this device are investigated in detail. the presence of the el efficiency flat zone is attributed to the synergy of improved carrier balance and the broadening of the recombination zone.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000284990800112
公开日期	2012-04-25
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43259]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhou LA,Li XN,Li XY,et al. High-Brightness, Broad-Spectrum White Organic Electroluminescent Device Obtained by Designing Light-Emitting Layers as also Carrier Transport Layers[J]. journal of physical chemistry c,2010,114(49):21723-21727.
APA	Zhou LA,Li XN,Li XY,Feng J,Song SY,&Zhang HJ.(2010).High-Brightness, Broad-Spectrum White Organic Electroluminescent Device Obtained by Designing Light-Emitting Layers as also Carrier Transport Layers.journal of physical chemistry c,114(49),21723-21727.
MLA	Zhou LA,et al."High-Brightness, Broad-Spectrum White Organic Electroluminescent Device Obtained by Designing Light-Emitting Layers as also Carrier Transport Layers".journal of physical chemistry c 114.49(2010):21723-21727.