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利用简便的溶剂热法,制得了由锐钛矿相的纳米片组成的、{001}面接近100%暴露的TiO2分级球形结构。利用电泳沉积法,将所得的TiO2分级球形结构作为散射层引入到染料敏化太阳电池(DSSC)中,并很好地保护了这种脆弱的分级结构。由于这种分级球形结构比TiO2纳米颗粒具有更好的染料吸附性能和光散射性能,使用这种TiO2分级球形结构作为散射层的DSSC达到了7.38%的光电转换效率,较之基于TiO2纳米颗粒的DSSC有了26%的提高。
A simple gravimetric solvothermal method was used to fabricate a TiO2 graded spherical structure composed of anatase phase nanosheets close to 100% exposed {001} plane. Using the electrophoretic deposition method, the resulting TiO2 graded spherical structure was introduced as a scattering layer into a dye-sensitized solar cell (DSSC), and this fragile graded structure was well protected. Due to the better dye adsorption and light scattering properties of this graded spherical structure than TiO2 nanoparticles, the DSSC using this TiO2 graded spherical structure as the scattering layer achieves a photoelectric conversion efficiency of 7.38%. Compared with the DSSC based on TiO2 nanoparticles With a 26% increase.