Photoelectrochemical performance of a sub-micron structured film with poly(3-methylthiophene) (P3MT)-modified CdTe/ZnO shell-core sub-micron tube arrays  

作　　者：HAO YanZhong LUO Chong SUN Bao SUN Shuo LI YingPin SHEN ShiGang XU DongSheng 

机构地区：[1]College of Sciences,Hebei University of Science and Technology [2]College of Chemistry and Environmental Science,Key Laboratory of Medical Chemistry and Molecular Diagnosis,Hebei University [3]Beijing National Laboratory for Molecular Sciences,State Key Laboratory for Structural Chemistry of Unstable and Stable Species,College of Chemistry and Molecular Engineering,Peking University

出　　处：《Science China Chemistry》2013年第6期755-762,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (NSFC, Grant nos. 21173065, 20573031);the Ministry of Science and Technology of China (MSTC, Grant no. 2011CB808702);the Natural Science Foundation of Hebei Province of China (Grant no.B2010000856)

摘　　要：A sub-micron structured film with a poly(3-methylthiophene) (P3MT)-modified CdTe/ZnO shell-core sub-micron tube array has been prepared by a series of electrodeposition processes, and a semiconductor-sensitized solar cell based on this structure was also fabricated. Vertically oriented ZnO sub-micron tubes were obtained on an indium tin oxide (ITO) substrate, and then CdTe nanocrystals and a thin P3MT layer were electrodeposited sequentially onto the walls of the ZnO sub-micron tubes. A suitable thickness of CdTe and P3MT could improve the photovoltaic properties of the solar cell, which was attributed to the enhancement in the light absorption and the decrease in the recombination of photogenerated carriers. In addition, a p–n heterojunction formed between the interface of CdTe and P3MT played an important part in the efficient separation and fast transport of photogenerated carriers in the sub-micron structure. A power conversion efficiency of 1.20% was obtained with this type of solar cell.A sub-micron structured film with a poly（3-methylthiophene） （P3MT）-modified CdTe/ZnO shell-core sub-micron tube array has been prepared by a series of electrodeposition processes, and a semiconductor-sensitized solar cell based on this structure was also fabricated. Vertically oriented ZnO sub-micron tubes were obtained on an indium tin oxide （ITO） substrate, and then CdTe nanocrystals and a thin P3MT layer were electrodeposited sequentially onto the walls of the ZnO sub-micron tubes. A suitable thickness of CdTe and P3MT could improve the photovoltaic properties of the solar cell, which was attributed to the enhancement in the light absorption and the decrease in the recombination of photogenerated carriers. In addition, a p-n het- erojunction formed between the interface of CdTe and P3MT played an important part in the efficient separation and fast transport of photogenerated carriers in the sub-micron structure. A power conversion efficiency of 1.20% was obtained with this type of solar cell.

关 键 词：semiconductor-sensitized solar cell CdTe nanoparticle ZnO sub-micron tube array 

分 类 号：O631.3[理学—高分子化学]