Double-layer structured WPLEDs based on three primary RGB luminescent polymers: Toward high luminous efficiency, color purity, and stability

doi:10.1021/jp0682006

CORC > 化学研究所 > 中国科学院化学研究所

	Double-layer structured WPLEDs based on three primary RGB luminescent polymers: Toward high luminous efficiency, color purity, and stability
	Zhou, Yi ; Sun, Qingjiang ; Tan, Zhan'ao ; Zhong, Haizheng ; Yang, Chunhe ; Li, Yongfang
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2007-05-10
卷号	111 期号:18 页码:6862-6867
ISSN号	1932-7447
DOI	10.1021/jp0682006
英文摘要	Efficient white polymer light-emitting diodes (WPLEDs) were fabricated on the basis of three kinds of luminescent polymers: poly{2-[3',5'-bis(2' '-ethylhexyloxy)benzyloxy]-1,4 phenylenevinylene}-co-poly(2-methoxy-5-(2'-ethyl-hexy loxy)-1,4-phenylene vinylene) (BE-co-MEH-PPV), red; poly(6,6'-bi-(9,9'-dihexylfluorene)-co-(9,9'-dihexylfluorene-3-thiophene-5'-yl)) (PFT), green; and poly(9,9-dioctylfluorene-2,7-diyl) (PFO), blue. In order to overcome the complicated cascade energy transfer and deep trapping process, the two narrow band gap red and green light-emitting polymers are separated into two layers. In the bottom emission layer, hole-transporting material poly(N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)benzidine (poly-TPD) and electron-blocking material poly(N-vinylcarbazole) (PVK) were chosen to work together as binary-host; concomitantly, the novel red light-emitting polymer BE-co-MEH-PPV was employed as guest. In addition, in order to avoid phase separation in the top emission layer, two fluorene-derivative polymers PFO and PFT were used as host and guest, respectively. Through these improvements, the resulting WPLEDs showed stable white light emission with a maximum luminescence efficiency of 4.4 cd/A and a maximum brightness of 4420 cd/m(2) at 17 V.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000246190500041
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/62717]
专题	中国科学院化学研究所
通讯作者	Li, Yongfang
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yi,Sun, Qingjiang,Tan, Zhan'ao,et al. Double-layer structured WPLEDs based on three primary RGB luminescent polymers: Toward high luminous efficiency, color purity, and stability[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(18):6862-6867.
APA	Zhou, Yi,Sun, Qingjiang,Tan, Zhan'ao,Zhong, Haizheng,Yang, Chunhe,&Li, Yongfang.(2007).Double-layer structured WPLEDs based on three primary RGB luminescent polymers: Toward high luminous efficiency, color purity, and stability.JOURNAL OF PHYSICAL CHEMISTRY C,111(18),6862-6867.
MLA	Zhou, Yi,et al."Double-layer structured WPLEDs based on three primary RGB luminescent polymers: Toward high luminous efficiency, color purity, and stability".JOURNAL OF PHYSICAL CHEMISTRY C 111.18(2007):6862-6867.