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

  1. Xujie Lü1,
  2. Xinliang Mou1,
  3. Jianjun Wu1,
  4. Dingwen Zhang3,
  5. Linlin Zhang2,
  6. Fuqiang Huang1,*,
  7. Fangfang Xu2,
  8. Sumei Huang3

Article first published online: 5 JAN 2010

DOI: 10.1002/adfm.200901292

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 20, Issue 3, pages 509–515, February 8, 2010

Additional Information

How to Cite

Lü, X., Mou, X., Wu, J., Zhang, D., Zhang, L., Huang, F., Xu, F. and Huang, S. (2010), Improved-Performance Dye-Sensitized Solar Cells Using Nb-Doped TiO2 Electrodes: Efficient Electron Injection and Transfer. Adv. Funct. Mater., 20: 509–515. doi: 10.1002/adfm.200901292

Author Information

  1. 1

    CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)

  2. 2

    Inorganic Materials Analysis and Testing Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)

  3. 3

    Engineering Research Center for Nanophotonics and Advanced Instrument East China Normal University Shanghai 200062 (P.R. China)

*CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 (P.R. China)

Publication History

  1. Issue published online: 27 JAN 2010
  2. Article first published online: 5 JAN 2010
  3. Manuscript Revised: 19 OCT 2009
  4. Manuscript Received: 15 JUL 2009

Funded by

  • National 973 Program of China. Grant Numbers: 2007CB936704, 2009CB939903
  • National Science Foundation of China. Grant Numbers: 50772123, 50821004
  • Science and Technology Commission of Shanghai. Grant Numbers: 0752nm016, 08JC1420200, 0952nm06500

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Keywords:

  • Solar Cells;
  • Titanium dioxide;
  • Doping;
  • Charge transport

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.

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