A Study on Porosity Distribution in Nanoporous TiO2 Photoelectrodes for Output Performance of Dye-Sensitized Solar Cells  

作　　者：徐炜炜 胡林华 戴松元 张昌能 罗向东 景为平 

机构地区：[1]Jiangsu Provincial Key Lab of ASIC Design, Nantong University, Nantong 226019 [2]Key Laboratory of Novel Thin Fihn Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, PO Box 1126, Hefei 230031

出　　处：《Chinese Physics Letters》2010年第3期304-307,共4页中国物理快报（英文版）

基　　金：Supported by the National Bauic Research Program of China under Grant No 2006CB202600, Funds of Chinese Academy of Sciences for Key Topics in Innovation Engineering under Grant No KGCX2-YW-326, the National Natural Science Foundation of China under Grant No 20703046, and the National Science Foundation of Nantong University under Grant No 08Z067.

摘　　要：Porosity as one of the crucial factors to film morphology affects the overall electrical current-voltage characteristics of dye-sensitized solar cell （DSC）. We search for the short-circuit current density, the open-circuit voltage and the maximum power output as the main functional parameters of DSC closely related to porosity under different film thickness. The theoretical analyses show some exciting results. As porosity changes from 0.41 to 0.75, the short-circuit current density shows the optimal value when the film thickness is 8-10 μm. The open-circuit voltage presents different variation tendencies for the film thicknesses within 1-8 μm and within 10-30 μm. The porosity is near 0.41 and the film thickness is about 10 μm, DSC will have the maximum power output. The theoretical studies also illustrate that given a good porosity distribution, DSC can obtain an excellent short-circuit current characteristic, which agrees well with the experimental results reported in previous literature.Porosity as one of the crucial factors to film morphology affects the overall electrical current-voltage characteristics of dye-sensitized solar cell （DSC）. We search for the short-circuit current density, the open-circuit voltage and the maximum power output as the main functional parameters of DSC closely related to porosity under different film thickness. The theoretical analyses show some exciting results. As porosity changes from 0.41 to 0.75, the short-circuit current density shows the optimal value when the film thickness is 8-10 μm. The open-circuit voltage presents different variation tendencies for the film thicknesses within 1-8 μm and within 10-30 μm. The porosity is near 0.41 and the film thickness is about 10 μm, DSC will have the maximum power output. The theoretical studies also illustrate that given a good porosity distribution, DSC can obtain an excellent short-circuit current characteristic, which agrees well with the experimental results reported in previous literature.

关 键 词：Electronics and devices Surfaces interfaces and thin films Nanoscale science and low-D systems Condensed matter: structural mechanical & thermal Chemical physics and physical chemistry 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TN721[电子电信—电路与系统]