Browsing by Author "Gao, Zhi-Qiang"

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Highly efficient deep blue organic electroluminescent device based on 1-methyl-9,10-di(1-naphthyl)anthracene
(2006-12-18)
Ho, Meng-Huan
;
Wu, Yao-Shan
;
Wen, Shih-Wen
;
Lee, Meng-Ting
;
Chen, Teng-Ming
The author have developed 2-methyl-9,10-di(1-naphthyl)anthracene (alpha,alpha-MADN) as an effective wide band gap host material for Forster energy transfer to the unsymmetrical mono(styryl)amine deep blue fluorescent dopant (BD-1). This guest/host emitting system, at the optimal doping concentration of 3%, can also increase the probability of carrier recombination near the hole-transport/emitting layer interface for the blue organic light emitting device which produces electroluminescence efficiencies of 3.3 cd/A and 1.3 lm/W and a deep blue CIEx,y color coordinates of (0.15, 0.13) that are 50% better than those of the traditional beta,beta-isomeric host (MADN) with the same dopant. (c) 2006 American Institute of Physics.
Highly efficient white organic light-emitting diodes with single small molecular emitting material
(2007-10-29)
Wang, Lei
;
Lin, Mei-Fang
;
Wong, Wai-Kwok
;
Cheah, Kok-Wai
;
Tam, Hoi-Lam
We demonstrate a highly efficient white organic light emitting device with fluorescent small molecule 4,4'-bis(9-(1-naphthyl)anthracene-10-yl)biphenyl (BUBH-3). With a simple device architecture of indium tin oxide/tris 4,4',4'-tris-N-naphthyl-N-phenylamino-triphenylamine (60 nm)/N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (10 nm)/BUBH-3 (45 nm)/Alq(3) (15 nm)/LiF (1 nm)/Al (150 nm), a white light with CIEx,y color of (0.31,0.36) was generated. The device achieved one of the best single-emitting-material electroluminescence performance of white organic light-emitting devices with efficiencies of 7.0 cd/A and 3.17 lm/W at 6.9 V. (C) 2007 American Institute of Physics.