高等学校化学学报2012，Vol.33Issue(12)：2697-2702,6.DOI:10.7503/cjcu20120707
染料敏化太阳电池中双层结构TiO2薄膜空间的电子分布与接触界面转移过程
Electron Distribution and Contact Interface Transfer Process in Bilayer TiO2 Films of Dye Sensitized Solar Cell
摘要
Abstract
The electron accumulation and transfer process at the nano/micro-scale bilayer structure of TiO2 film were investigated by electrochemical impedance spectroscopy(EIS). Two kinds of films with different mi-crostructures were prepared through adding a micro-scale TiO2 layer at the top of the nano-scale monolayer TiO2 film. The intrinsic properties of these films, such as the capacitance distribution, the density of electronic states, the electron transportation and the solid/liquid interfacial electron transfer process, were studied de-tailedly. The effect of the nano/micro-scale bilayer structure of TiO2 film on dye sensitized solar cell (DSC ) was analysed. Chemical capacitance increase caused by a certain number of electrons was accumulated in micro-scale TiO2 layer. The electron transport resistance had no significant effect when adding a micro-scale TiO2 layer. In addition to its good performance of light scattering, the material chemical capacitor and transfer resistance should be considered in selecting and preparing materials for DSC scattering layer.关键词
双层结构/电子积累/电子转移/染料敏化太阳电池Key words
Bilayer structure/ Electron accumulation/ Electron transfer/ Dye sensitized solar cell分类
化学化工引用本文复制引用
刘伟庆,梁忠冠,寇东星,胡林华,戴松元..染料敏化太阳电池中双层结构TiO2薄膜空间的电子分布与接触界面转移过程[J].高等学校化学学报,2012,33(12):2697-2702,6.基金项目
国家重点基础研究发展计划(批准号:2011CBA00700)、江西省教育厅科技项目(批准号:GJJ12440)和南昌航空大学博士基金(批准号:EA201008227)资助. （批准号:2011CBA00700）
