物理化学学报 >> 2005, Vol. 21 >> Issue (05): 534-538.doi: 10.3866/PKU.WHXB20050515

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染料敏化纳米薄膜太阳电池中DMPII浓度的优化

史成武; 戴松元; 王孔嘉; 郭力; 潘旭; 孔凡太; 胡林华   

  1. 中国科学院等离子体物理研究所，合肥   230031;    合肥工业大学化工学院，合肥   230009
  • 收稿日期:2004-11-09 修回日期:2005-01-19 发布日期:2005-05-15
  • 通讯作者: 戴松元 E-mail:sydai@ipp.ac.cn

Optimization of 1,2-dimethyl-3-propylimidazolium Iodide Concentration in Dye-sensitized Solar Cells

SHI Cheng-Wu; DAI Song-Yuan; WANG Kong-Jia; GUO Li; PAN Xu; KONG Fan-Tai; HU Lin-Hua   

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei   230031;   School of Chemical Engineering, Hefei University of Technology, Hefei   230009
  • Received:2004-11-09 Revised:2005-01-19 Published:2005-05-15
  • Contact: DAI Song-Yuan E-mail:sydai@ipp.ac.cn

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摘要： 利用超微铂电极和循环伏安法及电化学阻抗谱研究了在1,2-二甲基-3-丙基咪唑碘(DMPII)的3-甲氧基丙腈(MePN)溶液中I3－和I－的氧化还原行为，并对比了由不同浓度的I2和DMPII组成的电解质溶液，其染料敏化纳米薄膜太阳电池(DSCs)的光伏性能. 发现以MePN为溶剂，含1.0 mol•dm-3 DMPII、0.12 mol•dm-3 I2、0.10 mol•dm-3 LiI和0.50 mol•dm-3 4-叔丁基吡啶的电解质溶液，其DSCs的短路光电流密度为16.67 mA•cm-3、开路电压为0.69 V、填充因子为0.70、光电转换效率达8.08%.

关键词: 1,2-二甲基-丙基咪唑碘, 氧化还原, 染料敏化, 太阳电池

Abstract: The redox behaviors of I－ and I3－ in 3-methoxypropionitrile (MePN) with different concentrations of 1,2-dimethyl-3-propylimidazolium iodide (DMPII) and iodine were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The photovoltaic performance of dye-sensitized solar cells (DSCs) was compared with electrolytes containing different concentrations of DMPII and iodine. The DSCs with the electrolyte (1.0 mol•dm-3 DMPII, 0.10 mol•dm-3 LiI, 0.12 mol•dm-3 I2, 0.50 mol•dm-3 4-tert-butylpyridine, in MePN) gave short circuit photocurrent density (Jsc) of 16.76 mA•cm-3, open circuit voltage (Voc) of 0.69 V, and fill factor (FF) of 0.70, corresponding to a photoelectric conversion efficiency (η) of 8.08% under one Sun (AM1.5).

Key words: 1,2-dimethyl-3-propylimidazolium iodide, Redox, Dye-sensitized, Solar cell