Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer

	Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer
	Ma DG ; Lupton JM ; Beavington R ; Burn PL ; Samuel IDW
刊名	journal of physics d-applied physics
	2002
卷号	35 期号:6 页码:520-523
关键词	ELECTROLUMINESCENT DEVICES POLYMER MORPHOLOGY FILM MORPHOLOGY PERFORMANCE STABILITY
ISSN号	0022-3727
通讯作者	ma dg
中文摘要	in this paper, we study the effects of electrical annealing at different voltages on the performance of organic light-emitting diodes. the light-emitting diodes studied here are single-layer devices based on a conjugated dendrimer doped with 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole as the emissive layer. we find that these devices can be annealed electrically by applying a voltage. this process reduces the turn-on voltage and enhances the brightness and efficiency. we obtained an external electroluminescence quantum efficiency of 0.07% photon/electron and a brightness of 2900 cd m(-2) after 12.4 v electrical annealing, which are about 6 times and 9 times higher than un-annealing devices, respectively. the improved luminance and efficiency are attributed to the presence of a space charge field near the electrodes caused by charging of traps.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000174931600006
公开日期	2010-11-03
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/18673]
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	Ma DG,Lupton JM,Beavington R,et al. Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer[J]. journal of physics d-applied physics,2002,35(6):520-523.
APA	Ma DG,Lupton JM,Beavington R,Burn PL,&Samuel IDW.(2002).Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer.journal of physics d-applied physics,35(6),520-523.
MLA	Ma DG,et al."Improvement of luminescence efficiency by electrical annealing in single-layer organic light-emitting diodes based on a conjugated dendrimer".journal of physics d-applied physics 35.6(2002):520-523.