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High-performance hybrid white organic light-emitting diodes employing p-type interlayers
Baiquan Liu,Hong Tao,Jianhua Zou,Miao Xu,Dongyu Gao,Linfeng Lan,Lei Wang,Honglong Ning,Junbiao Peng 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.27 No.-
A simplified hybrid white organic light-emitting diode (WOLED) employing a p-type interlayer isdesigned, simultaneously realizing high efficiency, high color rendering index (CRI), low efficiency roll-off, low voltage and stable color. The device exhibits maximum total efficiencies of 29.8 cd/A and20.9 lm/W, which slightly decrease to 28.6 cd/A and 16.5 lm/W even at a high luminance of 5000 cd/m2. Besides, a slight color-shift and a CRI of 85 at 100 cd/m2 (3.65 V) are obtained. Such superior resultssystematically demonstrate that the use of p-type interlayer is a new way to realize high-performancehybrid WOLEDs.
Baiquan Liu,Honglong Ning,Lei Wang,Jianhua Zou,Zhongwei Zhou,Miao Xu,Hong Tao,Dongyu Gao,Linfeng Lan,Junbiao Peng 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
An efficient single-emitting layer hybrid white organic light-emitting diode (WOLED) was developed,simultaneously fulfilling low efficiency roll-off, stable color and extreme luminance. At the practicalluminance of 1000 cd/m2, a total current efficiency of 42.8 cd/A and power efficiency of 19.2 lm/W areachieved, maintaining as high as 40.5 cd/A and 15.5 lm/W even at 5000 cd/m2. Besides, a slight colorvariation [(0.025, 0.011)] and extreme luminance ( 106 cd/m2) are obtained. The working mechanism isunveiled and it is demonstrated that the triplet-exciton-confining ability of electron transport layersplays a more vital role in device performances, particularly for the lifetime.