高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1934-1937.

• 研究论文 • 上一篇    下一篇

P(VDF-HFP)基凝胶电解质染料敏化纳米TiO2薄膜太阳电池

郭力1, 戴松元1, 王孔嘉1, 方霞琴1, 史成武1,2, 潘旭1   

  1. 1. 中国科学院等离子体物理研究所,合肥230031;
    2. 合肥工业大学化工学院,合肥230009
  • 收稿日期:2004-08-02 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家重点基础研究发展规划项目(批准号:G2000028200)资助.

Dye-sensitized Nano-TiO2 Thin Memberane Solar Cells Based on P(VDF-HFP)-type Gel Electrolytes

GUO Li1, DAI Song-Yuan1, WANG Kong-Jia1, FANG Xia-Qin1, SHI Cheng-Wu1,2, PAN Xu1   

  1. 1. Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China;
    2. Hefei University of Technology,Hefei 230009,China
  • Received:2004-08-02 Online:2005-10-10 Published:2005-10-10

摘要: 采用循环伏安法(CV)研究了凝胶电解质中I3-/I-氧化还原行为,凝胶电解质中I3-/I-的表观扩散系数和相应的稳态扩散电流明显低于液体电解质.通过对阴/阳离子的结合能和孔穴阻塞作用的研究解释了凝胶电解质电导率较液体电解质发生变化的原因.制备的凝胶电解质电池具有较高的光电转换效率(6.6%),其短路电流密度(Jsc)仅比液体电解质电池低0.3-0.4 mA/cm2,电池效率也仅低约0.6%.

关键词: P(VDF-HFP), 凝胶电解质, 染料敏化, 太阳电池

Abstract: The I-3/I-redox behavior for gel electrolytes and liquid electrolyte was studied by cyclic voltammetry.It is found that the apparent diffusion coefficient(D) values of triiodide and iodide ions in gel electrolytes were apparently lower than those in liquid electrolyte,the former were about third of the latter.The conductivity measurement of the gel electrolyte containing different sum of P(VDF-HFP) shows that the conductivity decreases with increasing the sum of P(VDF-HFP) in gel electrolyte.It may be due to that the pore is not well connected and the ionic transport is hindered by the pore blockage.We fabricated quasi-solid state dye-sensitized nano-thin membrane solar cells using gel electrolyte containing poly(vinylidenefluoride-co-hexafluoropropylene)(PVDF-HFP) which showed an comparable photo-electric conversion efficiency to the liquid cell.The quasi-solid state solar cell with 5%P(VDF-HFP) showed the values of 0.70 V for open-circuit voltage,15.52 mA/cm2 for short-circuit photocurrent density,0.62 and 6.61% for Fill Factor and photo-electric conversion efficiency under the illustration of AM 1.5(100 mW/cm),respectively.

Key words: P(VDF-HFP), Gel electrolyte, Dye-sensitization, Solar cell

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