Study on the Movement of the Carrier Recombination Region in Organic Light-Emitting Diodes (OLEDs) Based on DPVBi/Alq3
YAN Guang, ZHAO Su-ling*, XU Zheng, ZHANG Fu-jun, KONG Chao, LIU Xiao-dong, GONG Wei, GAO Li-yan
Key Laboratory of Luminescence and Optical Information, Ministry of Education and Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044，China
Abstract：Series of organic light emitting devices with basic structure of ITO/PCBM: PVK(x Wt%, ~40 nm)/DPVBi(30 nm)/Alq3(30 nm)/Al were fabricated in order to investigate the carrier recombination region movement in these devices. The carrier injection-dependent, the carrier transport-dependent and the voltage-dependent carrier recombination region movements were investigated respectively by modifying cathode with lithium fluoride, by changing the doping concentration of PCBM and by changing the voltage on the devices. The physical mechanism behind the voltage-dependent carrier recombination region movement was discussed.
闫 光，赵谡玲*，徐 征，张福俊，孔 超，刘晓东，龚 伟，高利岩 . DPVBi/Alq3基有机发光二极管中载流子复合区移动的研究[J]. 光谱学与光谱分析, 2011, 31(07): 1729-1733.
YAN Guang, ZHAO Su-ling*, XU Zheng, ZHANG Fu-jun, KONG Chao, LIU Xiao-dong, GONG Wei, GAO Li-yan . Study on the Movement of the Carrier Recombination Region in Organic Light-Emitting Diodes (OLEDs) Based on DPVBi/Alq3 . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(07): 1729-1733.
