Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (07): 1701-1706.doi: 10.3866/PKU.WHXB20110734

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

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).

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