| 聚噻吩修饰纳米结构TiO2膜电极光电性能研究 |
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| 引用本文： | 王 伟,商艳平,郝彦忠.聚噻吩修饰纳米结构TiO2膜电极光电性能研究[J].河北科技大学学报,2007,28(1):14-18. |
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| 作者姓名： | 王 伟 商艳平 郝彦忠 |
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| 作者单位： | 1. 河北科技大学理学院,河北石家庄,050018
2. 石家庄制药集团维生药业,河北石家庄,050035 |
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| 基金项目： | 国家自然科学基金资助项目(20573031,20203008)，河北省自然科学基金资助项目(202351)，河北省教育厅指导性项目(Z2005203) |
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| 摘 要： | 用光电流作用谱、光电流-电势图等光电化学方法研究了聚噻吩(PTh)膜和纳米结构TiO2/聚噻吩(ITO/TiO2/PTh)复合膜的光电转换性质。结果表明,PTh膜的禁带宽度为2.02eV,价带位置为-5.86 eV,导带位置为-3.84 eV。在ITO/TiO2/PTh复合膜电极中存在p-n异质结,在一定条件下异质结的存在有利于光生电子-空穴对的分离,PTh修饰ITO/TiO2电极可使光电流产生波长发生明显红移,从而提高了宽禁带半导体的光电转换效率。在实验条件下,单色光的光电转换效率最高可达到13%。
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| 关 键 词： | 纳米结构TiO2/PTh电极 光电化学 聚噻吩 |
| 文章编号： | 1008-1542（2007）01-0014-05 |
| 收稿时间： | 2006/9/12 0:00:00 |
| 修稿时间： | 2006-09-12 |
Study on photo voltaic conversion properties of the PTh-modified nanostructured TiO2film electrode |
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| WANG Wei,SHANG Yan-ping and HAO Yan-zhong.Study on photo voltaic conversion properties of the PTh-modified nanostructured TiO2film electrode[J].Journal of Hebei University of Science and Technology,2007,28(1):14-18. |
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| Authors: | WANG Wei SHANG Yan-ping and HAO Yan-zhong |
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| Institution: | 1. College of Sciences, Hebei University of Science and Technology, Shijiazhuang Hebei 050018,China;2. Weisheng Pharmaceutical Company Limited,Shijiazhuang Pharmaceutical Group, Shijiazhuang Hebei 050035, China |
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| Abstract: | The photo voltaic conversion properties of polythiophene film and nanostructured TiO2/PTh film electrode were studied by using the photocurrent action spectra,the photocurrent dependence of potential and UVvis absorption spectra.The bandgap of PTh film is 2.02 eV,the conduction band of PTh film is-3.84 eV,and the valve band is-5.86 eV.The nanostructured TiO2/PTh electrode could enlarge the visible optical absorption region and obviously increase the photocurrent in visible region,the p-n heterojunction existed in TiO2/PTh nanostructured electrode which favored the separation of electron/hole pairs,and thus the photovoltaic conversion efficiency could be improved.The conversion efficiency of homogeneous light can reach 13% in experimental conditions. |
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| Keywords: | nanostructured TiO2/PTh electrode photoelectrochemistry polythiophene |
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