.Influence of PEDOT:PSS buffer layer on the performance of organic photocoupler[J].Optoelectronics Letters,2009,5(3):173-176 Influence of PEDOT:PSS buffer layer on the performance of organic photocoupler 王忠强  吴晓明  荆娜  侯庆传  胡子阳  程晓曼  华玉林  魏军  印寿根 WANG Zhong-qiang,WU Xiao-ming,JING Na,HOU Qing-chuan,Hu Zi-yang,CHENG Xiao-man,HUA Yu-lin,YIN Shou-gen(Key Laboratory on Display Materials and Photoelectric Devices of Education Ministry of China, Institute of Material Physics, Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384, China) ;WEI Jun(Key Laboratory on Display Materials and Photoelectric Devices of Education Ministry of China, Institute of Material Physics, Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384, China;Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore) ? Abstract:       We have fabricated an organic photocoupler with organic light-emitting diodes (OLEDs) with 520 nm emissive wavelength as the input light source and a photodiode (PD) based on poly(3-hexylthiophene) (P3HT):1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)-C61 (PCBM) as the detector. The influences of buffer layer (PEDOT:PSS) on output current (Iout), current transfer ratio (CTR) and time response characteristics of the photocoupler device were studied. Through our experiments, It is found that the output current linearly increases with the input current, the max output current and CTR of the devices with PEDOT:PSS buffer layer are 2 times and 7 times than that of the devices without buffer layer respectively, which show that the existence of buffer layer can enhance the output photocurrent efficiently. Moreover, the existence of PEDOT:PSS eliminates the time delay of the devices. Hits: 3820 Download times: 269 View Full Text    Download reader