Dye-sensitized Solar Cells Based on Several Nitrogen-doped Titania Electrodes

  • Dr Qingqing Miao, State Key Laboratory of Fine Chemicals,Dalian University of Technology, China
  • Tingli Ma, State Key Laboratory of Fine Chemicals,Dalian University of Technology, China
  • Dr Gang Xin, State Key Laboratory of Fine Chemicals,Dalian University of Technology, China
  • Master Wei Guo, State Key Laboratory of Fine Chemicals,Dalian University of Technology, China

    • Dye-sensitized solar cell(DSC) is a new type of photoelectric material. It is considered a technically and economically credible alternative to silicon photovoltaic devices. In order to commercialize DSCs,it is necessary to further improve the energy conversion efficiency. Recently, we successfully introduced the nitrogen-doped titania electrode prepared by dry method into the DSC system. In this paper, we mainly describes several DSCs based on nitrogen-doped titania prepared by wet methods. The physical and photoelectrochemical properties of nitrogen-doped titania powder, paste, electrodes and DSCs were investigated. We also discussed the influence of the preparing methods to the performance of the DSC. The UV-Vis spectra of the nitrogen-doped powder and film showed visible light absorption in the wavelength range from 400 nm to 535 nm. An enhancement of the overall conversion efficiency of the DSCs was achieved. We found that the influence of the different preparation methods for nitrogen-doped titania to the peformance characteristics of DSCs is unremarkable.