Dependence of TiO2 Nanoparticle Preparation Methods and Annealing Temperature on the Efficiency of Dye-Sensitized Solar Cells
Dependence of TiO2 Nanoparticle Preparation Methods and Annealing Temperature on the Efficiency of Dye-Sensitized Solar Cells
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DOI：
10.1021/jp020051d
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发表时间：
2002-09
影响因子：
3.3
通讯作者：
S. Nakade;M. Matsuda;S. Kambe;Y. Saito;T. Kitamura;T. Sakata;Y. Wada;H. Mori;S. Yanagida
中科院分区：
文献类型：
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作者：
S. Nakade;M. Matsuda;S. Kambe;Y. Saito;T. Kitamura;T. Sakata;Y. Wada;H. Mori;S. Yanagida
研究了不同TiO2纳米颗粒制备方法和不同退火温度制备的纳米多孔TiO2薄膜在不同薄膜厚度下的性能。结果表明，较高退火温度制备的太阳能电池具有较高的能量转换效率。就薄膜厚度而言，低温退火的薄膜电极太阳能电池表现出与高温退火的电池相当的效率。不同温度退火薄膜的电池之间的效率差异随着薄膜厚度的增加而增大。为了解释观察结果，测量了薄膜的表面积、吸附染料的量以及电子的扩散系数和寿命。发现每单位面积吸附的染料量与退火温度无关，而扩散系数和寿命随着温度的升高而增加。通过捕获模型，测量到的增加...
Performances of dye-sensitized solar cells prepared from nanoporous TiO2 films with different TiO2 nanoparticle preparation methods and different annealing temperatures are studied with various film thicknesses. The results show that the solar cells prepared at higher annealing temperatures have higher energy conversion efficiencies. Regarding film thickness, thin film electrode solar cells annealed at low-temperature show comparable efficiencies with those of the cells annealed at high temperature. The difference of the efficiency between the cells with the film annealed at different temperatures increases with the film thickness. To explain the observations, the surface area of the films, the amount of the adsorbed dye, and the diffusion coefficient and lifetime of electrons are measured. The amount of adsorbed dye per unit area is found to be independent of annealing temperature, while the diffusion coefficient and lifetime increase with the temperature. With trapping models, the measured increases of ...