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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (01): 33-40. 上一篇    下一篇

研究论文

TiO2纳米棒和CdSe纳米棒复合膜与聚3-甲基噻吩杂化太阳能电池研究

郝彦忠*,1,2，马洁霞2，孙宝1，李英品1，任聚杰1   

  1. 1. 河北科技大学理学院应用化学系物化室
    2. 河北科技大学
  • 投稿日期:2009-03-09 修回日期:2009-06-19 发布日期:2010-01-14
  • 通讯作者: 郝彦忠 E-mail:yzhao@hebust.edu.cn
  • 基金资助:

    国家自然科学基金资助项目（Nos.20573031;20203008）；河北省教育厅指导性项目（No.Z2005203）

Poly(3-methylthiophene) Hybrid Solar Cell with TiO2 Nanorod and CdSe Nanorod Composite Film

Hao Yanzhong*,1,2 Ma Jiexia2 Sun Bao1 Li Yingpin1 Ren Jujie1   

  1. (1 College of Science, Hebei University of Science and Technology, Shijiazhuang 050018)
    (2 College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018)
  • Received:2009-03-09 Revised:2009-06-19 Published:2010-01-14

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采用水热法制备了TiO2和CdSe两种纳米棒材料, 将两种纳米材料制备成TiO2/CdSe复合纳米棒膜电极, 并在复合膜上电化学聚合生成聚3-甲基噻吩poly(3-methylthiophene) (PMeT), 研究了其光电化学性能. 实验表明, 当TiO2与CdSe的物质的量复合比为2∶1, PMeT的聚合时间为40 s, 在电极电势为－0.2 V下ITO/TiO2/CdSe/PMeT电极光电转换效率(IPCE)达到56%, 对比ITO/TiO2/CdSe复合膜电极在长波方向的光电转换效率明显提高, 光吸收截止波长发生了明显的红移. 同时以ITO/TiO2/CdSe/PMeT组装了简易的杂化太阳电池, 初步研究了光电池性能, 光电池总效率为0.08%, Voc＝0.4 V, jsc＝0.61 mA/cm2, ff＝0.33.

关键词: TiO2纳米棒, CdSe纳米棒, 聚3-甲基噻吩, 杂化太阳电池

TiO2 and CdSe nanorods were prepared by a hydrothermal method. The photoelectrochemical properties of TiO2/CdSe composite film and TiO2/CdSe/PMeT film were investigated. The experiment results showed that the incident photon to current conversion efficiency (IPCE) of TiO2/CdSe/PMeT was obviously increased in comparison to that of TiO2/CdSe composite film. The experiment results showed that the p-n heterojunction existed in the TiO2/CdSe/PMeT nanostructure film, which favored the separation of electron-hole pairs generated by photoexcitation. The IPCE value of TiO2/CdSe/PMeT film was 56% at －0.2 V, and the incident light wavelength of 370 nm. The hybrid solar cell was fabricated with TiO2/CdSe nanostructure composite film and poly(3-methylthiophene) (PMeT). The conversion efficiency of the hybrid solar cell was 0.08%, short current 0.61 mA/cm2, open voltage 0.4 V, fill factor 0.33, under irradiation of 100 mW/cm2 white light from a Xe lamp.

Key words: TiO2 nanorod, CdSe nanorod, poly(3-methylthiophene), hybrid solar cell