Chin. Phys. Lett.  2006, Vol. 23 Issue (8): 2288-2291    DOI:
Original Articles |
Influence of Yb-Doped Nanoporous TiO2 Films on Photovoltaic Performance of Dye-Sensitized Solar Cells
XU Wei-Wei;DAI Song-Yuan; HU Lin-Hua;LIANG Lin-Yun;WANG Kong-Jia
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
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XU Wei-Wei, DAI Song-Yuan, HU Lin-Hua et al  2006 Chin. Phys. Lett. 23 2288-2291
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Abstract Yb-doped TiO2 pastes with different Yb/TiO2 weight ratios are prepared in the sol-gel process to obtain dye-sensitized solar cells (DSCs). The nanocrystalline size of Yb-TiO2 becomes smaller and the lattice parameters change. Lattice distortion is observed and dark current is detected. It is found that a part of Yb existing as insulating oxide Yb2O3 state acts as barrier layers at the electrode--electrolyte interface to suppress charge recombination. A Yb-doped TiO2 electrode applied in DSCs leads to a higher open-circuit voltage and a higher fill factor. How the Yb-doped TiO2 films affect the photovoltaic response of DSCs is discussed.
Keywords: 84.60.Jt      68.55.Jk      68.55.Ln     
Published: 01 August 2006
PACS:  84.60.Jt (Photoelectric conversion)  
  68.55.Jk  
  68.55.Ln (Defects and impurities: doping, implantation, distribution, concentration, etc.)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I8/02288
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XU Wei-Wei
DAI Song-Yuan
HU Lin-Hua
LIANG Lin-Yun
WANG Kong-Jia
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