文献类型：期刊文献

英文题名：Topotactically Grown Bismuth Sulfide Network Film on Substrate as Low-Cost Counter Electrodes for Quantum Dot-Sensitized Solar Cells

作者：Yu, Haijing[1];Bao, Huili[1];Zhao, Ke[1];Du, Zhonglin[1];Zhang, Hua[1];Zhong, Xinhua[1]

机构：[1]E China Univ Sci & Technol, Inst Appl Chem, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：118

期号：30

起止页码：16602

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY C

收录：;EI(收录号：20143318053111);WOS:【SCI-EXPANDED(收录号:WOS:000339930900038)】；

基金：We thank the National Natural Science Foundation of China (No. 21175043), the Science and Technology Commission of Shanghai Municipality (11JC1403100, 12ZR1407700, 12NM0504101), and the Fundamental Research Funds for the Central Universities for financial support.

语种：英文

外文关键词：Bismuth compounds - Film preparation - II-VI semiconductors - Nanosheets - Scanning electron microscopy - Solar cells - Cadmium sulfide - Curve fitting - Selenium compounds - Nanorods - Electrodes - Chemical vapor deposition - Glass substrates - Nanocrystals - Layered semiconductors - Solar power generation - Semiconductor quantum dots

摘要：Bi2S3 films consisting of two-dimensional interconnected Bi2S3 single-crystalline nanorod networks have been fabricated on a F:SnO2 (FTO) glass substrate through the formation of intermediate BiOI nanosheets from layer-structured BiI3 by chemical vapor deposition and subsequent hydrothermal transformation into Bi2S3 networks. A continuous lattice and structure-directed topotactic transformation mechanism is supposed for the formation of Bi2S3 network film. The prepared Bi2S3/FTO films were employed as counter electrode (CE) for CdSe quantum dot-sensitized solar cells for the first time and showed better photovoltaic performance than that from the convenient Pt CE. The influence of the preparation conditions for Bi2S3/FTO films on the resulting solar cell performance was systematically investigated and optimized with use of J-V curves, scanning electron microscopy (SEM), UV-vis absorption, and electrochemical impedance spectroscopy. To further improve the cell device efficiency, the modification of the Bi2S3 network CE with metal particles was also studied.