In this article, we report the improvement of energy conversion efficiency by a simple process for dye-sensitized solar cells (DSSCs). Some previous studies were reported in which TiO 2 nanowires were used in the place of TiO 2 nanoparticles as a TiO 2 electrode because nanowires possess a good electron transport property. However, if larger sizes of nanowires are used for the TiO 2 electrode, a large void between nanowires and a decrease in surface area are observed. To solve this problem, we report a TiO 2 nanoparticle/nanowire hybrid electrode for DSSCs, which showed both a good electron transport property and dye adsorption. TiO 2 nanofibers were fabricated by an electrospinning method and sol-gel techniques. TiO 2 nanowires, whose diameters were controlled by varying the polymer concentration in the electrospinning solution, were successfully applied to DSSCs. We examine how TiO 2 nanowires can work in the TiO 2 electrode. In this study, we demonstrated that this hybrid electrode has an advantage in the efficiency of DSSCs.
ASJC Scopus subject areas
- Physics and Astronomy(all)