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采用溶胶-凝胶法制备出La3+掺杂的TiO2纳米粉体材料,通过料浆喷涂工艺制得掺杂La3+的TiO2薄膜并将其以N719染料敏化制成染料敏化太阳能电池(DSSC)。以X射线衍射(XRD)、扫描电镜(SEM)和DSSC测试系统对制得的La3+掺杂的TiO2纳米粉体材料、相应的La3+掺杂的TiO2薄膜以及制成的DSSC分别进行测试表征,研究了La3+掺杂对TiO2晶型和染料敏化太阳能电池性能的影响。XRD测试结果表明,La3+的掺杂改善了TiO2的颗粒分布;电池的测试结果说明,La3+掺杂量为0.5%,煅烧温度为450℃时制备的纳米TiO2膜DSSC电池性能最佳,光电转换效率达1.926%。
La3 + -doped TiO2 nanopowder was prepared by sol-gel method. TiO2 thin film doped with La3 + was prepared by slurry spraying process and then sensitized with N719 dye to make DSSC. The prepared La3 + -doped TiO2 nanopowder material, the corresponding La3 + -doped TiO2 film and the prepared DSSC were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and DSSC test system respectively. Effects of La3 + Doping on the Properties of TiO2 Crystals and Dye - sensitized Solar Cells. The results of XRD showed that the doping of La3 + improved the particle size distribution of TiO2. The battery test results showed that the nanocrystalline TiO2 film prepared by La3 + doping amount was 0.5% and the calcination temperature was 450 ℃. The performance of the nanocrystalline TiO2 film was the best. The photoelectric conversion efficiency Up to 1.926%.