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化学学报
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化学学报 ›› 2005, Vol. 63 ›› Issue (15): 1391-1396. 上一篇    下一篇

研究论文

含有p-n单元的苝聚酰亚胺的合成及其敏化光电池的性能研究

牛海军1 2，白续铎*1，黄玉东2，汪成1   

  1. (1黑龙江大学化学化工学院 哈尔滨150080)
    (2哈尔滨工业大学应用化学系 哈尔滨150001)
  • 投稿日期:2004-04-28 修回日期:2005-04-10 发布日期:2010-12-10
  • 通讯作者: 白续铎

Synthesis and Properties of Perylene Polyimide Containing p-n Diblock Used in Photovoltaic Cell

NIU Hai-Jun1,2, BAI Xu-Duo*1, HUANG Yu-Dong2, WANG Cheng1   

  1. (1 School of Chemistry and Chemistry Technology, Heilongjiang University, Harbin 150080)
    (2 Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001)
  • Received:2004-04-28 Revised:2005-04-10 Published:2010-12-10
  • Contact: BAI Xu-Duo

PDF

1519

被引次数

20

设计、合成并表征了含有p-n(供电子-吸电子)单元的苝聚酰亚胺PPI, 并研究了其作为敏化电极材料的光电池的性能. 产物为非晶态. 从电子谱中计算出其能带带宽为2.16 eV, 用电化学循安伏安法计算得到其电子亲和势(Ea, 最低空轨道能级)为－3.97 eV, 离子势(IP, 最高占据轨道能级的绝对值)为6.13 eV, 其能级与二氧化钛的能级相匹配, 对二氧化钛有较好的敏化作用. 光电池的光电流作用谱(IPCE)与紫外电子谱十分相似, 光电压与光强之间有指数的关系. 用苝聚酰亚胺为敏化剂的光电池的光电转换效率为0.0135%.

关键词: 苝聚酰亚胺, 光电池, 敏化剂

The perylene polyimide containing donor-acceptor unit was designed, synthesized and characterized by elemental analysis, UV-visible spectrum, gel permeation chromatograph, nuclear magnetic resonance, infrared spectrum, and thermogravimetry. The photovoltaic cell composed of polyimide used as dye sensitizer of TiO2 was prepared and its properties were tested. The polymer is noncrystalline determined by wide angle X-ray diffraction spectrum. Calculated from electron absorption spectrum, the energy of band is 2.16 eV. The electron affinity potential (Ea) (ELUMO) and ionic potential (IP) (－EHOMO) are －3.97 and 6.13 eV respectively deduced by the cyclic voltammetry. The energy level of polymer matched the level of TiO2, which has good sensitization effect to TiO2. The overall power conversion efficiency η of the photovoltaic cell is 0.0135%.

Key words: perylene polyimide, photovoltaic cell, sensitizer