Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination

doi:10.1002/ijch.201400066

CORC > 化学研究所 > 中国科学院化学研究所

	Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination
	Hu, Yue 1; Zhang, Tingke 1; Chen, Jiangshan 1; Ma, Dongge 1; Cheng, Chien-Hong 2
刊名	ISRAEL JOURNAL OF CHEMISTRY
	2014-07-01
卷号	54 期号:7 页码:979-985
关键词	Fluorescence Host-guest Systems Low-ct Light Sources Luminescence Organic Light-emitting Diodes
ISSN号	0021-2148
DOI	10.1002/ijch.201400066
英文摘要	Low color-temperature (CT) light sources are preferred for physiologically-friendly illumination at night due to their low suppression of melatonin secretion. We fabricated low-CT hybrid organic light-emitting diodes (OLEDs) by constructing a double emissive-layer (EML) structure, with a blue-red fluorescent-phosphorescent hybrid EML and a green phosphorescent EML, separated by a bipolar inter-layer. By doping a red phosphor in a blue fluorescent mixed-host with a decent concentration, blue and red emissions from the host and dopant, respectively, were obtained. The CT of the optimized device was tuned to less than 2500 K, with the brightness ranging from 100 to 10,000 cd m(-2). In addition, the low-CT OLED exhibited much higher efficacy than other low-CT light sources, such as incandescent bulbs and candles. The maximum power efficiency and external quantum efficiency of the hybrid OLED reached 54.6 lm W-1 and 24.3%, respectively, which only rolled off to 44.2 lm W-1 and 23.6% at 1000 cd m(-2), with a CT of 1910 K. Low-CT OLEDs with high efficacy provide a promising alternative for night lighting that will safeguard human health.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000340187400016
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52295]
专题	中国科学院化学研究所
通讯作者	Hu, Yue
作者单位	1.Univ Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 13002, Peoples R China 2.Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan
推荐引用方式 GB/T 7714	Hu, Yue,Zhang, Tingke,Chen, Jiangshan,et al. Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination[J]. ISRAEL JOURNAL OF CHEMISTRY,2014,54(7):979-985.
APA	Hu, Yue,Zhang, Tingke,Chen, Jiangshan,Ma, Dongge,&Cheng, Chien-Hong.(2014).Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination.ISRAEL JOURNAL OF CHEMISTRY,54(7),979-985.
MLA	Hu, Yue,et al."Hybrid Organic Light-Emitting Diodes with Low Color-Temperature and High Efficiency for Physiologically-Friendly Night Illumination".ISRAEL JOURNAL OF CHEMISTRY 54.7(2014):979-985.