报告题目Title：Photocarrier generation in cyanine films and bilayers 染料薄膜太阳能电池的光生载流子
报 告 人Speaker：Frank A. Nüesch(瑞士联邦材料科技实验室 EPMA and EPFL )
报告时间Time：2016年9月21日(周三) 9:00
报告地点Venue：E106 Meeting Room 会议室，永利量子与分子结构国际中心SHU ICQMS
摘要：Charge carrier generation and recombination are crucial processes in solar cells governing photocurrent and power conversion efficiency. Here charge generation in bilayers composed of a cyanine dye and a fullerene acceptor as well as in pristine cyanine films is scrutinized via photo CELIV (Current Extraction by Linearly Increasing Voltage) and time resolved electric field modulated absorption. We reveal that charge transfer states at the cyanine-fullerene interface are limiting the kinetics of electron collection at the cathode. We also unravel charge generation in pristine cyanine films and find that efficient bulk generation gives rise to photoconductivity in such devices.
