文献类型：期刊文献

英文题名：Optimization of TiO2 photoanode films for highly efficient quantum dot-sensitized solar cells

作者：Du, Zhonglin[1];Zhang, Hua[1];Bao, Huili[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：2

期号：32

起止页码：13033

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20143118005305);WOS:【SCI-EXPANDED(收录号:WOS:000340347700051)】；

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：Glass - Nanocrystals - Semiconductor quantum dots - II-VI semiconductors - Quantum efficiency - Solar cells - Cadmium compounds - Solar power generation - Light scattering - Selenium compounds - Film preparation

摘要：As a fundamental part of quantum dot-sensitized solar cells, the composition and configuration of the TiO2 photoanode film plays an important role in photovoltaic performance. In this work, the preparation and optimization of films have been systematically studied, including the TiCl4 treatment technique, transparent layer and light-scattering layer thickness and composition. Experimental results show that the sole TiCl4 treatment on fluorine doped SnO2 (FTO) glass is sufficient for achieving a high efficiency in the resultant cell devices when compared with the simultaneous treatment on both FTO glass and TiO2 mesoporous films. The thickness and porosity of the transparent layer have been optimized by tuning the number of transparent layers and the ethyl cellulose contents in the paste. Moreover, the influence of the light-scattering layer pastes with different contents of the large-sized TiO2 particles on the performance of the cells has also been explored. The CdSe-sensitized solar cells based on the optimized TiO2 film photoanode exhibits a power conversion efficiency of 5.53% under 1 full sun illumination, which is among the best efficiencies for plain CdSe QD-based solar cells.