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采用溶胶-凝胶法在导电玻璃上制备了致密-多孔复合TiO2薄膜,采用场发射扫描电镜(FE-SEM)和紫外-可见分光光度计,分析了光阳极薄膜的表面形貌和吸光度;用天然染料组装了DSSC,研究了致密膜成膜方式和陈化时间对DSSC电学性能的影响。结果表明:致密膜自然晾干的光阳极具有最好的表面形貌,DSSC具有较大的短路电流,当溶胶陈化时间为48h时,复合TiO2薄膜具有最大的吸光度,制备的DSSC电性能具有最大的开路电压和短路电流。
The dense-porous composite TiO2 films were prepared on conductive glass by sol-gel method. The surface morphology and absorbance of the photoanode films were analyzed by field emission scanning electron microscope (FE-SEM) and ultraviolet-visible spectrophotometer. The DSSC was assembled with natural dyes, and the effect of film formation and aging time on the electrical properties of DSSC was studied. The results showed that the photoanode with dense membrane naturally dried had the best surface morphology and the DSSC had a large short-circuit current. When the sol aging time was 48h, the composite TiO2 film had the maximum absorbance. The prepared DSSC had The maximum open circuit voltage and short circuit current.