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Preparation of TiN x O 2– x Photoelectrodes with NH 3 Under Controllable Middle Pressures for Dye‐Sensitized Solar Cells
Author(s) -
Wang Xin,
Yang Yulin,
Jiang Zhaohua,
Fan Ruiqing
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900134
Subject(s) - doping , tin , band gap , chemistry , absorption edge , absorption (acoustics) , semiconductor , solar cell , visible spectrum , electrode , dye sensitized solar cell , nanotechnology , analytical chemistry (journal) , chemical engineering , optoelectronics , optics , materials science , organic chemistry , physics , electrolyte , engineering
As part of our efforts to find a way to control the concentration of N‐doped TiO 2 , TiN x O 2– x powders were prepared by a device of our own design. In this research, photoelectrodes are generated using N‐doped TiO 2 materials where the concentrations are adjusted by the amount of NH 3 under middle pressure, which is seldom reported. Considerable efforts have been directed to the study of the optical absorption edge that is redshifted towards the visible‐light region. Therefore, N‐doped TiO 2 electrodes are characterized by SPS and TPV analyses as experimental and theoretical studies. Experimental results indicate that the band gap of the semiconductor has been narrowed by increasing the concentration of the N‐doped TiO 2 . The overall conversion efficiency of the solar cell has shown that the photoelectrical properties of the N‐doped TiO 2 have greatly improved with different concentrations. It can therefore be concluded that the synthesis route we found through this study is an effective way to adjust the relationship between the concentration and the band gap of the N‐doped TiO 2 photoelectrodes.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)