期刊
CHEMICAL ENGINEERING JOURNAL
卷 229, 期 -, 页码 190-196出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2013.06.006
关键词
ZnO dye-sensitized solar cells; TiO2 nanoparticles; TiO2 layer; Photoelectron collection mechanism
资金
- Shanghai Leading Academic Discipline Project [S30107]
- National Natural Science Foundation of China [51202138, 51102271]
- Natural Science Foundation of Shanghai [12ZR1410500, 11ZR1436300]
- Research & Innovation Projects of Shanghai Education Commission [11YZ22]
- Project of Shanghai Environment Condition [10dz2252300]
- Shanghai Rising-Star Program [11QA1406400]
- Science Foundation for Excellent Youth Scholars of Shanghai University
The development of a simple and reproducible route to modify ZnO surface with TiO2 is urgent for harnessing multiple interfaces and enhancing performance of ZnO dye-sensitized solar cell (DSSC). Here, we reported a simple method to decorate TiO2 nanoparticles for ZnO DSSC. By simple immersing ZnO film into butyl alcohol solution of tetrabutyl titanate (TBOT), TiO2 nanoparticles were well decorated onto ZnO nanocrystal surface. By taking the advantage of the hydrolysis and condensation differential of different TiO2 precursors, the simple method allows an easy tune over the TiO2 modification structure on ZnO surface for DSSC application. The influence of ZnO/TiO2 modification structure on the photoelectron collection mechanism of DSSC was discussed. The DSSC with ZnO/TiO2 nanoparticle has better photoelectron collection mechanism comparing with that of ZnO/TiO2 layer modified by titanium isopropoxide (TTIP) solution, leading to larger photocurrent and better DSSC performance. The DSSC performance of ZnO/TiO2 nanoparticle declines as the concentration of TBOT greater than 0.50 M, which is mainly caused by the electron collection mechanism change originating from ZnO/TiO2 modification structure. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据