物理化学学报 >> 2011, Vol. 27 >> Issue (07): 1701-1706.doi: 10.3866/PKU.WHXB20110734

电化学和新能源 上一篇    下一篇

TiO2纳米晶复合纳米棒染料敏化太阳能电池

刘润花1,2, 张森2, 夏新元2, 云大钦2, 卞祖强2, 赵永亮1   

  1. 1. 内蒙古大学化学化工学院, 呼和浩特 010021;
    2. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:2011-02-28 修回日期:2011-05-19 发布日期:2011-06-28
  • 通讯作者: 卞祖强, 赵永亮 E-mail:bianzq@chem.pku.edu.cn; hxzhaoyl@163.com
  • 基金资助:

    国家自然科学基金(90922004, 20971006, 20821091)资助项目

DSSCs Using a Nanoparticle/Nanorod Composite TiO2 Film as a Photoanode

LIU Run-Hua1,2, ZHANG Sen2, XIA Xin-Yuan2, YUN Da-Qin2, BIAN Zu-Qiang2, ZHAO Yong-Liang1   

  1. 1. College of Chemistry and Chemical Engineering, Inner Mogolia University, Hohhot 010021, P. R. China;
    2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2011-02-28 Revised:2011-05-19 Published:2011-06-28
  • Contact: BIAN Zu-Qiang, HAO Yong-Liang E-mail:bianzq@chem.pku.edu.cn; hxzhaoyl@163.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (90922004, 20971006, 20821091).

摘要:

通过二次水热法合成锐钛矿TiO2纳米棒(ANR). 采用X射线衍射(XRD)、场发射扫描电镜(FE-SEM)和透射电镜(TEM)等手段对其进行表征. 通过调节ANR和锐钛矿纳米颗粒(ANP)的掺杂比例来增加TiO2纳米晶膜的光捕获效率和电子传输速率, 并对比了单层结构(ANR+ANP)和双层结构(ANP/(ANR+ANP))的纳米晶膜光阳极的光电转化性能. 在AM 1.5、光强100 mW·cm-2的模拟太阳光下测试, 染料N719敏化的双层结构太阳能电池光电转化效率达7.3%, 比相同条件下单层纯ANP光阳极器件的光电转化效率(6.1%)提高了20%.

关键词: 染料敏化太阳能电池, 纳米棒, 纳米颗粒, 电子传输速率, 光捕获效率, 光电转化效率

Abstract:

TiO2 anatase nanorods (ANR) were synthesized by a two-step hydrothermal method. The materials were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). To increase the light harvesting efficiency and electron transfer rate, N719 dye-sensitized solar cells (DSSCs) were constructed and compared by adjusting the doping ratio of the anatase nanoparticles (ANP) and ANR in the TiO2 nanocrystalline film that was used as a photoanode in the DSSCs. The best light-to-electricity conversion efficiency (7.3%) was obtained for a double-layered photoanode (ANP/(ANR+ANP)) cell, which is 20% higher than the traditional single-layered ANP cell (6.1%) when tested under the same conditions and at AM 1.5, 100 mW·cm-2.

Key words: Dye-sensitized solar cell, Nanorod, Nanoparticle, Electron transfer rate, Light capture efficiency, Photoelectric conversion efficiency

MSC2000: 

  • O646