利用改进型的溶胶-凝胶法,制得了由锐钛矿相纳米颗粒组成的TiO2多孔微纳小球。通过调节前驱物浓度,合成出粒径可控的尺寸分别为100,175,225,475 nm的TiO2微纳小球,并通过电泳沉积法将合成出的小球作为光散射层引入到染料敏化太阳电池(DSSC)中。由于这种微纳小球在具备良好的光散射性能的同时也具备较高的染料吸附量,因此相较于基于纳米颗粒的单层结构的DSSC拥有更高的光电转换效率。通过比较分析,粒径尺寸为475 nm的微球作为光散射层的DSSC光电转换效率可以达到6.3%,较之于基于纳米颗粒的DSSC提高了30%。 A modified porous sol-gel method was used to prepare TiO2 porous micro-nanospheres composed of anatase phase nanoparticles. By adjusting the concentration of precursors, TiO 2 micro / nano spheres with sizes of 100, 175, 225 and 475 nm were synthesized and controlled by the method of electrophoretic deposition. The synthesized spheres were introduced as light scattering layer into dye - sensitized solar cell (DSSC) in. The DSSC has a higher photoelectric conversion efficiency than the nanoparticle-based single-layer structure due to its good light-scattering properties and high dye adsorption capacity. Through comparative analysis, the DSSC photoelectric conversion efficiency of the microsphere with the particle size of 475 nm as the light scattering layer can reach 6.3%, which is 30% higher than that of the DSSC based on the nanoparticles.