Get access

Improved-Performance Dye-Sensitized Solar Cells Using Nb-Doped TiO2 Electrodes: Efficient Electron Injection and Transfer

Authors

  • Xujie Lü,

    1. CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Xinliang Mou,

    1. CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Jianjun Wu,

    1. CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Dingwen Zhang,

    1. Engineering Research Center for Nanophotonics and Advanced Instrument East China Normal University Shanghai 200062 (P.R. China)
    Search for more papers by this author
  • Linlin Zhang,

    1. Inorganic Materials Analysis and Testing Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Fuqiang Huang,

    Corresponding author
    1. CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    • CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Fangfang Xu,

    1. Inorganic Materials Analysis and Testing Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)
    Search for more papers by this author
  • Sumei Huang

    1. Engineering Research Center for Nanophotonics and Advanced Instrument East China Normal University Shanghai 200062 (P.R. China)
    Search for more papers by this author

Abstract

Well-crystallized Nb-doped anatase TiO2 nanoparticles are prepared by a novel synthetic route and successfully used as the photoanode of dye-sensitized solar cells (DSSCs). The homogenous distribution of Nb in the TiO2 lattice is confirmed by scanning transmission electron microscopy (STEM) elemental mapping and line-scanning analyses. After Nb doping, the conductivity of the TiO2 powder increases, and its flat-band potential (Vfb) has a positive shift. The energy-conversion efficiency of a cell based on 5.0 mol% Nb-doped TiO2 is significantly better, by about 18.2%, compared to that of a cell based on undoped TiO2. The as-prepared Nb-doped TiO2 material is proven in detail to be a better photoanode material than pure TiO2, and this new synthetic approach using a water-soluble precursor provides a simple and versatile way to prepare excellent photoanode materials.

Get access to the full text of this article

Ancillary