TY - JOUR
T1 - Based on Cu(II) silicotungstate modified photoanode with long electron lifetime and enhanced performance in dye sensitized solar cells
AU - Jiang, Yanxia
AU - Yang, Yulin
AU - Qiang, Liangsheng
AU - Fan, Ruiqing
AU - Ning, Huanpo
AU - Li, Liang
AU - Ye, Tengling
AU - Yang, Bin
AU - Cao, Wenwu
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China (Grant 21171044 and 21371040 ) and the National Key Basic Research Program of China (973 Program, No. 2013CB632900 ). This work was also supported by the Fundamental Research Funds for the Central Universities (Grant No. HIT. IBRSEM. A. 201409 ), also Program for Innovation Research of Science in Harbin Institute of Technology (PIRS of HIT No. A201416 and B201414 ).
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/3/15
Y1 - 2015/3/15
N2 - A new photoanode material, Cu(II) silicotungstate - K6SiW11O39Cu(H2O)·xH2O modified TiO2 (SiW11Cu/TiO2), has been successfully prepared by a combined hydrolysis and hydrothermal method. When SiW11Cu/TiO2 is mixed with P25 powder in a weight ratio of 1:9 as a photoanode in dye-sensitized solar cell, an improved power conversion efficiency of 7.90% is achieved, significantly higher than that of the cell using P25 as a photoanode (6.16%). The results show that the lifetime and the injection ability of electrons are improved after the modification of the photoanode. The large improvement in device performance is ascribed to the decrease of the charge carrier recombination and the enhanced injection ability of electrons. Furthermore, the introduction of SiW11Cu can synchronously extend the absorption to the visible region, which should also be beneficial to the increase of the device performance.
AB - A new photoanode material, Cu(II) silicotungstate - K6SiW11O39Cu(H2O)·xH2O modified TiO2 (SiW11Cu/TiO2), has been successfully prepared by a combined hydrolysis and hydrothermal method. When SiW11Cu/TiO2 is mixed with P25 powder in a weight ratio of 1:9 as a photoanode in dye-sensitized solar cell, an improved power conversion efficiency of 7.90% is achieved, significantly higher than that of the cell using P25 as a photoanode (6.16%). The results show that the lifetime and the injection ability of electrons are improved after the modification of the photoanode. The large improvement in device performance is ascribed to the decrease of the charge carrier recombination and the enhanced injection ability of electrons. Furthermore, the introduction of SiW11Cu can synchronously extend the absorption to the visible region, which should also be beneficial to the increase of the device performance.
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U2 - 10.1016/j.jpowsour.2014.12.120
DO - 10.1016/j.jpowsour.2014.12.120
M3 - Article
AN - SCOPUS:84920728512
SN - 0378-7753
VL - 278
SP - 527
EP - 533
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -
