TiO_2多孔薄膜电极的制备、微结构及光电化学性能研究

PREPARATION, MICROSTRUCTURE, AND PHOTOELECTROCHEMICAL PROPERTIES OF POROUS TiO2 THIN FILM ELECTRODES

ＴｉＯ２多孔薄膜电极的制备、微结构及光电化学性能研究＊王维波李学萍肖绪瑞＊＊（中国科学院感光化学研究所光电化学中心，北京１００１０１）关键词ＴｉＯ２薄膜电极，多孔性，光电流响应近年来，半导体纳晶多孔薄膜作为一类重要的纳米结构材料，其光电化学性质及功能...

our kinds of different porous TiO2 thin film electrodes were prepared by spreading and dipcoating methods. Surface morphology and microstructure were characterized by the SEM observations and structural parameters (porosity and surface roughness) determinations. Photocurrent action spectra with front and backside illuminations were used to study the photocurrent behaviours. The results indicate that the spreading TiO2 thin film electrodes possess porous structure and different photocurrent behaviours compared with that of dipcoating TiO2 thin film electrodes. The photoelectrochemical properties of spreading TiO2 thin film electrodes can be improved by optimizing the film thickness and sintering temperature.