染料敏化太阳电池阻抗特性研究  

Impedance Characteristics of Dye Sensitized Solar Cells

作　　者：刘伟庆[1,2] 寇东星[1] 蔡墨朗[1] 胡林华[1] 戴松元[1] 

机构地区：[1]中国科学院等离子体物理研究所中国科学院新型薄膜太阳电池重点实验室,合肥230031 [2]南昌航空大学测试与光电工程学院无损检测技术教育部重点实验室,南昌330063

出　　处：《化学进展》2012年第5期722-736,共15页Progress in Chemistry

基　　金：国家重点基础研究发展计划(973)项目(No.2011CBA00700);国家高技术发展计划(863)项目(No.2011AA050527;2011AA050510);国家自然科学基金项目(No.21173228);中国博士后科学基金项目(No.20110490835)资助

摘　　要：电化学阻抗谱(EIS)是染料敏化太阳电池(DSC)领域中最重要的研究手段之一。本文详细介绍了EIS在DSC研究中的理论模型、实验方法、内部电荷传输和转移过程、阻抗信息提取和动力学过程解析的最新研究进展;综述了其在光阳极、电解液体系、对电极、稳定性、新结构设计等DSC各个研究领域中的应用,特别总结了DSC内部各个组成部分的阻抗特性。最后,对这些方面存在的问题进行了评论,并对未来新材料和电池机理的深入研究进行了展望。Dye-sensitized solar cells（DSC） are regarded as a potential low-cost alternative to conventional solar cells and have attracted considerable interest during the past decades.The working mechanism of DSC is not yet fully been understood and needs further investigation.Electrochemical impedance spectroscopy（EIS） is a powerful technique to identify and study the working mechanism in DSC.Through the EIS measurements,some parameters,such as electron transfer resistance,electron transport resistance,capacitance,ion diffusion resistance,electron diffusion constant and electron lifetime,etc.can be obtained.After further processing of these data,the charge transport kinetics,the electron transfer kinetics,the electron collection kinetics,the semiconductor energy level changes and the density of states distribution can be analyzed.This paper summarizes the basic theory and experimental methods of EIS application in DSC.The latest research progress about the charge transport process,the electron transfer process,the impedance of DSC information extraction and the dynamic process analysis are reviewed.Furthermore,the application of EIS in various research fields of DSC,such as photoanode,electrolyte system,counter electrode,stability test,new structure design are introduced.Especially,the impedance characteristics of the various components of DSC are summed up and the latest progress in the study of the work mechanism in DSC are systematically summarized.The current problems existed in the research of EIS application for DSC are discussed and the future development is prospected.

关 键 词：染料敏化 太阳电池 电化学阻抗谱 

分 类 号：O649.4[理学—物理化学] TB914[理学—化学]