Efficient White Electroluminescent Device with Stable Emission Spectrum

	Efficient White Electroluminescent Device with Stable Emission Spectrum
	Zhou L ; Deng RP ; Hao ZM ; Song MX ; Zhang HJ
刊名	acta chimica sinica
	2012
卷号	70 期号:18 页码:1904-1908
关键词	LIGHT-EMITTING DEVICES HIGHLY EFFICIENT ORGANIC ELECTROPHOSPHORESCENCE TRANSIENT ANALYSIS PERFORMANCE DIODES DERIVATIVES LAYERS
ISSN号	0567-7351
通讯作者	zhou l
中文摘要	in this work, we report a novel white organic light-emitting device (woled) with stable emission spectrum. red emitter 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4h-pyran (dcjtb) was selected and doped into n,n'-diphenyl-n,n'-bis(1-naphthyl)-1,1'-diphenyl-4,4'-diamine (npb) layer as hole transport layer and the first light-emitting layer (eml1), which provides blue and red emissions. the widely used green material tris(8-hydroxyquinoline) aluminum (alq) was selected as sensitizer of electron injection and doped into npb layer as the second light-emitting layer (eml2), which provides blue and green emissions. the doping concentrations of dcjtb and alq were optimized to be 0.4% and 0.14%, respectively, while the thickness of eml2 was optimized to be 3 nm. finally, we obtained the pure white organic light-emitting device, which possesses 3.1 v turn-on voltage, 32749 cd/m(2) maximum brightness, 8.67 cd/a maximum current efficiency, and 8.78 lm/w maximum power efficiency. more importantly, the use of hole-type host material help to confine the recombination zone of holes and electrons, thus improving the stability of electroluminescent spectrum. with increasing current density, the commission internationale de l'eclairage (cie) coordinates of this device change from (0.343, 0.342) to (0.328, 0.336).
收录类别	SCI收录期刊论文
语种	中文
WOS记录号	WOS:000310255500003
公开日期	2013-04-23
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/47936]
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 L,Deng RP,Hao ZM,et al. Efficient White Electroluminescent Device with Stable Emission Spectrum[J]. acta chimica sinica,2012,70(18):1904-1908.
APA	Zhou L,Deng RP,Hao ZM,Song MX,&Zhang HJ.(2012).Efficient White Electroluminescent Device with Stable Emission Spectrum.acta chimica sinica,70(18),1904-1908.
MLA	Zhou L,et al."Efficient White Electroluminescent Device with Stable Emission Spectrum".acta chimica sinica 70.18(2012):1904-1908.