染料敏化太阳电池中TiO2/染料/电解质界面的修饰  

TiO_2/Dye/Electrolyte Interface Modification for Dye-Sensitized Solar Cells

作　　者：李景哲[1] 孔凡太[1] 武国华[1] 黄阳[1] 陈汪超[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

出　　处：《物理化学学报》2013年第9期1851-1864,共14页Acta Physico-Chimica Sinica

基　　金：国家重点基础研究发展规划项目(973)(2011CBA00700);国家自然科学基金(21003130,61204075);中国科学院对外合作重点项目(GJHZ1220)资助~~

摘　　要：染料敏化太阳电池(DSC)作为新型太阳电池自问世以来受到了广泛关注,其系统内部的接触界面尤其是TiO_2/染料/电解质界面一直是该领域的研究热点.光敏染料的吸附以及电子的注入、传输和复合都发生在该界面,其界面性质对DSC性能具有很大影响.对染料敏化太阳电池中TiO_2/染料/电解质界面进行修饰可以有效抑制染料聚集和电子复合,提高电子的注入效率与传输速率;同时,对TiO_2导带边的位置及染料吸附等也产生一定的影响,最终提高电池的光电转换效率和稳定性.本文主要从不同的修饰途径详细评述了TiO_2/染料/电解质界面修饰方法及机理研究进展,包括TiO2_光阳极的修饰改性、染料溶液中共吸附剂的引入和多种染料共敏化处理以及电解质中不同功能添加剂的应用.指出了这些修饰方法目前存在的主要问题,并对未来的发展方向进行了展望.Dye-sensitized solar cell （DSC）, a new type of solar cell, have attracted widespread attention since they were first reported. The internal contact interfaces of DSC, especially TiO2/dye/electrolyte interfaces, have always been a focus of research in this field. The adsorption of photosensitizers, and the injection, transport, and recombination of photoelectrons, which occur at the interface, have a significant effect on the DSC performance. Modification of the TiO2/dye/electrolyte interface of DSC can effectively reduce dye aggregation, surpress electronic recombination, enhance electronic injection efficiency, and improve the transport rate, so it improves the photovoltaic performance and stability of the DSC. Modification can also affect the position of TiO2 conduction band, the adsorption behavior of the dye, and other parameters. In this article, researches on the methods and mechanism of TiO2/dye/electrolyte interface modification are reviewed. These include modification of TiO2 photoanodes by various methods, the introduction of co-adsorbents into the dye bath, the co-sensitization by different dyes, and the use of electrolyte additives with different functional mechanisms in the electrolyte. Finally, problems existed in application of these modification methods and future development directions are discussed.

关 键 词：染料敏化太阳电池 界面修饰 电子复合 光阳极 共敏化 电解质添加剂 共吸附剂 

分 类 号：TM914.4[电气工程—电力电子与电力传动]