Hybrid white organic light-emitting diodes with a double light-emitting layer structure for high color-rendering index

	Hybrid white organic light-emitting diodes with a double light-emitting layer structure for high color-rendering index
	Zhao FC ; Sun N ; Zhang HM ; Chen JS ; Ma DG
刊名	journal of applied physics
	2012
卷号	112 期号:8 页码:文献号：084504
关键词	HIGH-EFFICIENCY TRIPLET EXCITONS DEVICES ELECTROPHOSPHORESCENCE FLUORESCENT YELLOW
ISSN号	0021-8979
通讯作者	zhao fc
中文摘要	high-efficiency hybrid white organic white light-emitting diodes (woleds) with a double light-emitting layer structure for high color-rendering index (cri) have been fabricated. the double light-emitting layer structure is composed of a red phosphorescent layer and a blue-green layer of a blue light-emitting fluorescent host doped with a green phosphor separated by a bipolar spacer. the simultaneous emission of a blue light from the fluorescent host and a green light from the phosphor was realized by controlling the doping concentration of the green phosphor in the fluorescent host. the resulting hybrid woleds achieved a cri of 90 and kept rather stable spectral emission with commission internationale de l'eclairage coordinates of (0.42, 0.44) independent of driving voltages. furthermore, the hybrid woleds also exhibited a high efficiency that the maximum current efficiency, external quantum efficiency and power efficiency reached 29.4 cd/a, 13.8% and 34.2 lm/w, and still remained at 25.4 cd/a, 11.9% and 23.0 lm/w at 1000 cd/m 2, respectively. mechanism of the two emission layers and role of the bipolar spacer were systematically studied and we have attributed the significant improvement in device performances to the effective and stable control of exciton recombination in the emissive regions by the bipolar functionality of the used spacer. (c) 2012 american institute of physics. [http://dx.doi.org/10.1063/1.4759045]
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000310597500137
公开日期	2013-04-22
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/47895]
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	Zhao FC,Sun N,Zhang HM,et al. Hybrid white organic light-emitting diodes with a double light-emitting layer structure for high color-rendering index[J]. journal of applied physics,2012,112(8):文献号：084504.
APA	Zhao FC,Sun N,Zhang HM,Chen JS,&Ma DG.(2012).Hybrid white organic light-emitting diodes with a double light-emitting layer structure for high color-rendering index.journal of applied physics,112(8),文献号：084504.
MLA	Zhao FC,et al."Hybrid white organic light-emitting diodes with a double light-emitting layer structure for high color-rendering index".journal of applied physics 112.8(2012):文献号：084504.