染料敏化太阳能电池光阳极的优化与性能研究

对染料敏化太阳能电池（DSSC）光阳极的制作工艺进行优化设计,在光阳极初始默认的制作工艺条件下,分别对影响DSSC光电性能的光阳极活性面积、TiO₂薄膜厚度、是否添加散射层、TiO₂薄膜烧结温度、化学处理方法和TiCl₄浓度影响因素逐一进行考察,最终确定了光电极的最佳制作工艺：光阳极活性层面积为0.4 cm × 0.4 cm,TiO₂薄膜厚度为19 μm,并加散射层,TiO₂薄膜电极的烧结温度为T₁ = 525℃、二次烧结温度为T₂ = 500℃,采用0.1 mol/L的TiCl₄水溶液进行化学处理,获得短路电流密度19.45 mA/cm²,光电转换效率8.42%。此制作工艺方法简单、光谱特性好、光电转换效率高,有利于DSSC的结构优化与推广应用。

Optimization and Performance Study of Photoanode for Dye-Sensitized Solar Cells

In this paper, the fabrication process of photoanode for dye-sensitized solar cells was designed and optimized. Factors which influence the DSSC photoelectric properties were studied under the default manufacturing conditions of the photoanode, respectively, these factors include active area of photoanode, thickness of TiO₂ film, adding scattering layer or not, sintering temperature of TiO₂ film, chemical treatment method and concentration of TiCl₄. The optimum fabrication process for the photoelectrode was determined as follows: the photoanode active layer area was 0.4 cm × 0.4 cm, TiO₂ film thickness was 19 μm, and with scattering layer, TiO₂ film electrode sintering temperature was T₁ = 525^oC, secondary sintering temperature was T₂ = 500^oC, and with 0.1 mol/L TiCl₄ aqueous solution for chemical treatment. The experimental results showed that the short circuit current density was 19.45 mA/cm², and the photoelectric conversion efficiency was 8.42%. This process is beneficial for the structure optimization of DSSC and has a broad application future, due to its simple fabrication process, good spectral characteristics and high photoelectric conversion efficiency.