Preparation of nanocrystalline TiO2 with mixed template and its application for dye-sensitized solar cells

被引:43
作者
Jiu, JT [1 ]
Wang, FM [1 ]
Sakamoto, M [1 ]
Takao, J [1 ]
Adachi, M [1 ]
机构
[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
关键词
D O I
10.1149/1.1785011
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
This work describes a procedure based on a mixed template of copolymer F127 [poly(ethylene oxide)(106)poly(propylene oxide)(70)-poly(ethylene oxide)(106)] and surfactant CTAB (cetyltrimethylammonium bromide) for generating anatase TiO2 nanocrystals. When the particle size is 3-5 nm, the surface area without aggregation is about 300 m(2)/g, but our experimental value is 180 m2/g. This means that not all surfaces of 3-5 nm particles are exposed. Then the prepared TiO2 narocrystals were used to assemble dye-sensitized very thin solar cells of about 6 mum. Its photocurrent-voltage performance was investigated. The mixed template allowed the fabrication of crack-free porous TiO2 film electrodes of various thicknesses by repetitive coating and calcinations. The transparent solar cell obtained with a six-time repetitive coating exhibited an open-circuit potential of V-oc = 760 mV; a short-circuit photocurrent density, J(sc) = 17.2 mA/cm(2); a fill factor, ff = 0.635; and an efficiency of eta = 8.3%. A solar cell using the commercial P25 as the TiO2 film electrode was also assembled for comparison, and the result are analyzed and discussed. (C) 2004 The Electrochemical Society.
引用
收藏
页码:A1653 / A1658
页数:6
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