The Electric Mechanism of Surface Pretreatments for Dye-Sensitized Solar Cells Based on Internal Equivalent Resistance Analysis  

作　　者：XU Wei-Wei HU Lin-Hua LUO Xiang-Dong LIU Pei-Sheng DAI Song-Yuan 徐炜炜;胡林华;罗向东;刘培生;戴松元(Jiangsu Provincial Key Lab of ASIC Design,Nantong University,Nantong 226019;Division of Solar Energy Materials and Engineering,Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031)

机构地区：[1]Jiangsu Provincial Key Lab of ASIC Design,Nantong University,Nantong 226019 [2]Division of Solar Energy Materials and Engineering,Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031

出　　处：《Chinese Physics Letters》2012年第1期279-282,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2011CBA00700;the National Natural Science Foundation of China under Grant Nos 21173228 and 11104150;the Foundation of Key Laboratory of Novel Thin Film Solar Cells,Chinese Academy of Sciences under Grant No KF201106;the Major Program of Natural Science Basic Research of Institution of Higher Education of Jiangsu Province under Grant Nos 08KJA510002 and 10KJA140043.

摘　　要：Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out to interpret the internal electric mechanism.The numerical values,including the series resistance R_(s) and the shunt resistance R_(sh) corresponding to the equivalent circuit model,are well evaluated and confirm that the DSC has good performance with a high R_(sh) and a low R_(s) due to good electrical contact and a low charge recombination after the different modifications.The Ⅰ-Ⅴ curves are fifted in the case without series resistance,and account for the role of R_(s) in the output characteristics.It is found that when R_(s) tends to the infinitesimal,the short-circuit current Isc,the open-circuit voltage V_(oc) and the fill factor can be improved by almost 0.8-1.4,2.9 and 2.1-6.8%,respectively.

关 键 词：RESISTANCE COATING INTERNAL 

分 类 号：TG1[金属学及工艺—金属学]