title: Temperature and Exciton Concentration Induced Excimer Emission of 4,4'-Bis(4''-Triphenylsilyl) Phenyl-1,1'-Binaphthalene and Application for Sunlight-Like White Organic Light-Emitting Diodes.
abstract: This paper demonstrates the influence of temperature, exciton concentration, and electron transportation layers on the excimer emission of a novel deep-blue material: 4,4'-bis(4''-triphenylsilyl) phenyl-1,1'-binaphthalene (SiBN), by studying the photoluminescence and electroluminescence spectra of SiBN-based film. We have further developed sunlight-like and warm-light white organic light-emitting diodes (WOLEDs) with high efficiency and wide-range spectra, using SiBN and bis(2-phenylbenzothiozolato-N,C2')iridium(acetylacetonate) (bt2Ir(acac)) as the blue excimer and yellow materials, respectively. The resulting device exhibited an excellent spectra overlap ratio of 82.9 % with sunlight, while the device peak current efficiency, external quantum efficiency, and power efficiency were 18.5 cd/A, 6.34 %, and 11.68 lm/W, respectively, for sunlight-like WOLEDs.
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.|Sino-European School of Technology, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China.
authors: Tao
authors: T
authors: Xu
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
authors: Weiling
authors: W
authors: Li
authors: School of Petroleum and chemical engineering, Qinzhou University, 12 coastal Avenue, Qinzhou, 535000, People's Republic of China. gaoxicun1@hotmail.com.
authors: Xicun
authors: X
authors: Gao
authors: Department of Electrical Engineering, Iowa State University, 4565 Union Dr, Ames, IA, 50011, USA.
authors: Chang
authors: C
authors: Sun
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
authors: Guo
authors: G
authors: Chen
authors: School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, 1 Jinji Road, Guilin, 541004, People's Republic of China.
authors: Xiaowen
authors: X
authors: Zhang
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
authors: Chunya
authors: C
authors: Li
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
authors: Wenqing
authors: W
authors: Zhu
authors: Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, People's Republic of China. bwei@shu.edu.cn.
authors: Bin
authors: B
authors: Wei
keywords: Concentration; Electron transportation layer; Excimer emission; Monomer emission; Sunlight-like WOLEDs