Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
Phys Chem Chem Phys. 2009 Nov 7;11(41):9489-96. doi: 10.1039/b912672d. Epub 2009 Aug 18.

Zinc-doping in TiO2 films to enhance electron transport in dye-sensitized solar cells under low-intensity illumination.

Author information

  • 1Department of Chemical Engineering, Center for Micro/Nano Science and Technology, National Cheng Kung University, 70101 Tainan, Taiwan.


A nanocrystalline TiO(2) film with highly dispersed Zn-doping shows its capability for efficient electron transport in dye-sensitized solar cells (DSSCs). The Zn-doping is conducted via Zn(2+) introduction into a layered titanate followed by hydrothermal treatment and calcination. The Zn-doped films exhibit an elevated electron Fermi level, which may enhance band bending to lower the density of empty trap states. Because of this Zn-doping, the consequent DSSCs can alleviate the decay of light-to-electric energy conversion efficiency due to light intensity reduction. Intensity-modulated spectroscopic analysis reveals that enhanced transport of photogenerated electrons as a result of the trap density minimization is responsible for the high cell performance under low-intensity illumination. A Zn-doping content of ca. 0.4 at% Zn/Ti can enhance the light conversion efficiency by 23% at a solar light intensity as low as 11 mW cm(-2). This technique can significantly extend the indoor application of DSSCs.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Royal Society of Chemistry
    Loading ...
    Write to the Help Desk