Analysis on dye-sensitized solar cells based on Fe-doped TiO_2 by intensity-modulated photocurrent spectroscopy and Mott-Schottky

作     者：Qiu-Ping Liu 

作者机构：School of Pubic Policy and ManagementTsinghua University Beijing National Laboratory for Molecular SciencesKey Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of Sciences 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2014年第25卷第6期

页      面：953-956页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：supported by National Research Fund for High-Tech Research and Development of China Program(No. 2007AA05Z439) 

主　　题：Dye sensitized solar cells Titanium dioxide Fe-doped film Photovoltaic performance Flat band potential 

摘      要：The pure TiO2 and Fe salts [Fe（C2O4）3,5H2O]-doped TiO2 electrodes were prepared by the hydrothermal method. The pure TiO2 or Fe-doped TiO2 slurry was coated onto the fluorine-doped tin oxide glass substrate by the Doctor Blade method and then sintered at 450 ℃. The Mott-Schottks, plot indicates that the fiat band potential of TiO2 was shifted positively after Fe-doped TiO2. The positive shift of the fiat band potential improves the driving force of injected electrons from the LUMO of the dye to the conduction band of TiO2. This study shows that photovoltaic efficiency increased by 22.9% from 6.07% to 7.46% compared to pure TiO2, and the fill factors increased from 0.53 to 0.63.