TY - JOUR
T1 - Solution Combustion Synthesis of TiO 2 and Its Use for Fabrication of Photoelectrode for Dye-sensitized Solar Cell
AU - Chung, Shyan Lung
AU - Wang, Ching Mei
N1 - Funding Information:
Support of this research by the National Science Council of Taiwan under Grant No. NSC 100-2221-E-006-214 and partial support under Contract No. 101-D0204-6 by the Bureau of Energy, Ministry of Economic Affairs of Taiwan and the LED Lighting Research Center, NCKU are gratefully acknowledged. The authors also thank Professor Chien-Hsin Yang (National University of Kaohsiung) for his assistance in fabrication of the photoelectrodes and assembling of the DSSC.
PY - 2012/8
Y1 - 2012/8
N2 - Three different types of TiO 2 nano powders were synthesized by a solution combustion synthesis (SCS) method using three different fuels and for comparison, another type of TiO 2 nano powder was synthesized by calcination of titanyl hydroxide. These TiO 2 nano powders were used to fabricate photoelectrodes for the dye-sensitized solar cell (DSSC) and their performance was compared to that of the DSSC fabricated with Degussa P25 TiO 2. The results showed that the SCS TiO 2 could work well as photoelectrode for DSSC. The SCS TiO 2 contained impurities of C and/or S, thus exhibiting visible light absorption and reduced band gap. The open circuit voltage and the fill factor both varied little among the various TiO 2 and thus both had little effect on the photoelectrical conversion efficiency (η). However, the variation of η was seen to be in quite a good agreement with that of the short circuit current (I SC), suggesting that η was dominated by I SC. I SC was found to be enhanced by light scattering effect due to the presence of large particles but reduced by high impurity content due to an increase in electron transfer resistance. In addition, the specific surface area of the powders was found to be an important factor affecting the I SC and thus the η.
AB - Three different types of TiO 2 nano powders were synthesized by a solution combustion synthesis (SCS) method using three different fuels and for comparison, another type of TiO 2 nano powder was synthesized by calcination of titanyl hydroxide. These TiO 2 nano powders were used to fabricate photoelectrodes for the dye-sensitized solar cell (DSSC) and their performance was compared to that of the DSSC fabricated with Degussa P25 TiO 2. The results showed that the SCS TiO 2 could work well as photoelectrode for DSSC. The SCS TiO 2 contained impurities of C and/or S, thus exhibiting visible light absorption and reduced band gap. The open circuit voltage and the fill factor both varied little among the various TiO 2 and thus both had little effect on the photoelectrical conversion efficiency (η). However, the variation of η was seen to be in quite a good agreement with that of the short circuit current (I SC), suggesting that η was dominated by I SC. I SC was found to be enhanced by light scattering effect due to the presence of large particles but reduced by high impurity content due to an increase in electron transfer resistance. In addition, the specific surface area of the powders was found to be an important factor affecting the I SC and thus the η.
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U2 - 10.1016/S1005-0302(12)60120-0
DO - 10.1016/S1005-0302(12)60120-0
M3 - Article
AN - SCOPUS:84866168030
SN - 1005-0302
VL - 28
SP - 713
EP - 722
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
IS - 8
ER -