Title :
Low roll-off efficiency and chromatic-stable white organic light-emitting diodes based on excimer emission
Author :
Xu, Hong ; Lv, Yanfang ; Zhang, Mingyan ; Zhu, Wenqing ; Wei, Bin ; Wang, Zixing
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
White Organic light emitting devices (WOLEDs) based on excimer emission have been fabricated, using only a platinum [1,3-difluoro- 4,6-di(2-pyridinyl)benzene] chloride(Pt-4) doped in 1,3-bis(9-carbazolyl)benzene (mCP), a single emissive layer to obtain white emission which comprises red and blue light-emitting spectra. The maximum current-and power- efficiency values of white device are 11.5 cd/A and 9.21 lm/W, respectively. And we obtained low roll-off efficiency and stable Commission International d´Eclairage (CIE) chromaticity coordinates of (0.32, 0.39).
Keywords :
excimers; excitons; organic light emitting diodes; phosphorescence; 1,3-bis(9-carbazolyl)benzene; [1,3-difluoro- 4,6-di(2-pyridinyl)benzene] chloride; chromatic-stable white organic light-emitting diodes; excimer emission; low roll-off efficiency; single emissive layer; Artificial intelligence; Educational institutions; Fabrication; Indium tin oxide; Platinum; WOLEDs; chromatic-stable; excimer; high efficiency;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013435
