N-doped material for dye-sensitized solar cells

Great progress on Dye-Sensitized Nitrogen-Doped TiO2 Solar Cells has been recently made by PhD student Mr Huajun Tian in the Key Laboratory of Novel Thin-film Solar Cell, CAS. The work has been published online at the Journal of Physical Chemistry C on the website of the American Chemical Society http://pubs.acs.org on Jan. 5, 2010.

Detailed study about the charge recombination of DSC based on nitrogen-doped TiO2 electrodes was performed in the key Lab. The research suggested the TiO2 photoanode with nitrogen doping could successfully retard the charge recombination, and the introduction of nitrogen replaced the oxygen deficiency in the titania crystal lattice, which could lead to more stable dye-sensitized photoanode for DSC. This progress was also introduced by Prof. Songyuan Dai as the invited talk at 2009 MRS fall meeting held in Boston, USA, on Dec. 1, 2009. （Fantai Kong reports）

Fig. 1 I-V curve of solar cells based on N-doped TiO2 electrodes

Fig. 2  Dark current analysis of nitrogen-doped DSCs