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	Highly efficient blue electrophosphorescent devices with a novel host material
	Lei, G.T. ; Wang, L.D. ; Duan, W.L. ; Qiu, W.Y.
	2010-05-06 ; 2010-05-06
关键词	Practical Experimental/ doping profiles electroluminescence indium compounds light emitting diodes magnesium organic compounds phosphorescence silver/ highly efficient blue electrophosphorescent devices host material highly efficient blue electrophosphorescent light emitting diodes N,N'-dicarbazolyl-1,4-dimethene-benzene energy transfer mechanism bis[(4,6-difluorophenyl)-pyridinato-N,C/sup 2/'] (picolinato) Ir(III) indium tin oxide 4,7-diphenyl-1,10-phenanthroline dopant concentration maximum external quantum efficiency current efficiency luminance 30 nm 6 V 5.8 percent InSnO-Mg:Ag/ B4260D Light emitting diodes B4220M Phosphors/ size 3.0E-08 m voltage 6.0E+00 V efficiency 5.8E+00 percent/ InSnO-Mg:Ag/int InSnO/int Mg:Ag/int Ag/int In/int Mg/int Sn/int O/int InSnO/ss In/ss Sn/ss O/ss Mg:Ag/bin Ag/bin Mg/bin Ag/el Mg/el Ag/dop
中文摘要	Highly efficient blue electrophosphorescent light emitting diodes with a new host material N,N'-dicarbazolyl-1,4-dimethene-benzene (DCB) were demonstrated. The energy transfer mechanism of the host-guest material system consisting of DCB and bis[(4,6-difluorophenyl)-pyridinato-N,C/sup 2/'] (picolinato) Ir(III) (FIrpic) is an exothermic process. The device with a configuration of indium tin oxide/N,N'-diphenyl-N,N'-bis(1-1'-biphenyl)-4,4'-diamine (NPB)/DCB:FIrpic/4,7-diphenyl-1,10-phenanthroline(BPhen)/Mg:Ag was optimized by adjusting the thickness of emitting layer and the dopant concentration. The device with the 8% (weight ratio) FIrpic and 30 nm emitting layer exhibits the maximum external quantum efficiency and current efficiency of 5.8% and 9.8 cd/A, respectively, at the luminance of 22 cd/m/sup 2/ driven at the voltage of 6.0 V.
语种	英语 ; 英语
出版者	Elsevier ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/12486]
专题	清华大学
推荐引用方式 GB/T 7714	Lei, G.T.,Wang, L.D.,Duan, W.L.,et al. Highly efficient blue electrophosphorescent devices with a novel host material[J],2010, 2010.
APA	Lei, G.T.,Wang, L.D.,Duan, W.L.,&Qiu, W.Y..(2010).Highly efficient blue electrophosphorescent devices with a novel host material..
MLA	Lei, G.T.,et al."Highly efficient blue electrophosphorescent devices with a novel host material".(2010).

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