化学学报 ›› 2011, Vol. 69 ›› Issue (07): 767-771. 上一篇    下一篇

研究论文

一种高效、绿色制备环状硫碘盐的新方法及其在染料敏化太阳电池中的应用

郭磊,潘旭,王猛,寇东星,蔡墨朗,张昌能,戴松元*   

  1. (中国科学院新型薄膜太阳电池重点实验室 中国科学院等离子体物理研究所 合肥 230031)
  • 投稿日期:2010-08-12 修回日期:2010-11-08 发布日期:2010-12-06
  • 通讯作者: 戴松元 E-mail:sydai@ipp.ac.cn
  • 基金资助:

    国家重点基础研究发展计划;国家高技术研究发展计划;中国科学院知识创新工程重要方向项目

A Highly Effective and Green Method for the Preparation of Alkyl Cyclic Sulfonium Iodide and Its Application in Dye-sensitized Solar Cell

GUO Lei, PAN Xu, WANG Meng, KOU Dong-Xing, CAI Mo-Lang, ZHANG Chang-Neng, DAI Song-Yuan   

  1. (Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)
  • Received:2010-08-12 Revised:2010-11-08 Published:2010-12-06
  • Contact: Songyuan Dai E-mail:sydai@ipp.ac.cn

采用高压釜合成和乙酸乙酯/水萃取提纯的模式制备出高产率、高纯度的环状烷基硫碘盐. 高压釜合成在保证产率的前提下, 大大缩短了反应时间(反应时间仅为原来的1/3)|乙酸乙酯和水的萃取提纯模式在保证产品纯度的同时, 大大缩短了提纯时间, 还避免了有毒试剂的使用. 制备出的烷基环状硫碘盐作为碘源用于配制染料敏化太阳电池用电解质, 相应电池的光电转化效率接近使用传统烷基咪唑碘盐的电池. 电化学阻抗谱(EIS)测试表明环状烷基锍阳离子相比于烷基咪唑阳离子来说, 更有利于抑制电池内部的电子复合反应, 同时还能促进对电极上电子交换反应的进行, 最终可以提高电池的开路电压和填充因子.

关键词: 染料敏化太阳电池, 硫碘盐, 高压釜, 合成

High productivity and purity alkyl cyclic sulfonium iodides were prepared by using autoclave and water/ethyl acetate system. Autoclave synthesis took shorter time (about 1/3 of traditional method) guaranteeing against productivity decline, and the extraction with water/ethyl acetate system took shorter purifying time as well as avoiding the use of poisoned organic solvents. These alkyl cyclic sulfonium iodides were used as iodide source to prepare electrolytes for dye-sensitized solar cell (DSC). The efficiency of corresponding DSC based on these sulfonium iodides was near to that based on imidazole iodide. The result of electrochemical impedance spectra showed that the sulfonium cation could inhibit the back reaction within DSC and be benefit for electron exchange reaction on counter electrode compared with imidazole cation, resulting in higher open voltage and better fill factor.

Key words: dye-sensitized solar cell, sulfonium iodide, autoclave, synthesis

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