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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (19): 2253-2257. 上一篇    下一篇

研究论文

基于偏氟乙烯-六氟丙烯共聚物凝胶电解质的染料敏化太阳电池光电性能研究

张玉香b,c    霍志鹏a,b    张昌能a,b   戴松元*,a,b   

  1. (a中国科学院 新型薄膜太阳电池重点实验室 合肥 230031) (b中国科学院等离子体物理研究所 太阳能材料与工程研究室 合肥 230031) (c安徽广播影视职业技术学院 合肥 230022)
  • 投稿日期:2009-01-07 修回日期:2009-03-25 发布日期:2009-06-10
  • 通讯作者: 戴松元 E-mail:sydai@ipp.ac.cn

Research on the Dye-sensitized Solar Cells Based on P(VDF-HFP)-type Polymer Gel Electrolyte

Zhang, Yuxiang b,c        Huo, Zhipeng a,b          Zhang, Changneng a,b      Dai, Songyuan *,a,b   

  1. (a Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031) (b Division of Solar Energy Materials and Engineering, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031) (c Anhui Broadcasting Movie and Television College, Hefei 230022)
  • Received:2009-01-07 Revised:2009-03-25 Published:2009-06-10
  • Contact: Songyuan Dai E-mail:sydai@ipp.ac.cn

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1200

被引次数

25

采用偏氟乙烯-六氟丙烯共聚物[P(VDF-HFP)]胶凝3-甲氧基丙腈基液体电解质, 成功制备了凝胶电解质并组装成准固态染料敏化太阳电池. 差示扫描量热测试结果表明凝胶电解质的溶液-凝胶转变温度(TSG)为71 ℃. 利用电化学方法分析了凝胶电解质中 电对的表观扩散系数及电导率低于液体电解质的原因, 同时结合暗态伏安法考察了电池内部TiO2多孔薄膜电极/电解质界面处的暗反应, 分析了凝胶化对电池光伏性能的影响. 进一步老化实验结果表明凝胶电池的稳定性明显优于液体电池.

关键词: 凝胶电解质, 表观扩散系数, 电导率, 染料敏化, 太阳电池

A quasi-solid-state dye-sensitized solar cell (DSC) was fabricated using poly(vinylidenefluoride-co-hexafluoropylene) [P(VDF-HFP)] as a polymer gelator to form gel electrolyte. The differential scanning calorimetry measurement showed the solution-to-gel transition temperature (TSG) of the gel was about 71 ℃. It was found that the gelation decreased the apparent diffusion coefficient (Dapp) values of triiodide and iodide ions and the conductivity in electrolyte. The influence of gelation on the charge recombination at the dyed TiO2 mesoscopic electrode/electrolyte interface was investigated by adopting a linear sweep voltammetry technology. The result showed that the gelation increased the dark reaction at the dyed TiO2 mesoscopic electrode/electrolyte interface. The result of the accelerated aging test showed that the gel electrolyte based DSC exhibited much better stability than the device based on the liquid electrolyte.

Key words: gel electrolyte, apparent diffusion coefficient, conductivity, dye-sensitized, solar cell

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