화학공학소재연구정보센터
Applied Surface Science, Vol.358, 412-417, 2015
Dye-sensitized solar cells fabricated by the TiO2 nanostructural materials synthesized by electrospray and hydrothermal post-treatment
Recently, a series of new hierarchical porous TiO2 spheres with specific high surface area and pore volume were prepared by the method of electrospray and hydrothermal post-treatment in our group. The applications of these materials in photocatalysis have been investigated. In this research, the application of them in dye-sensitized solar cells (DSSCs) was studied. The porous TiO2 spheres showed a Gaussian distribution with average size of ca. 600 nm, which can be used as good materials for light scattering in DSSCs. The specific surface areas of these materials are high enough for dye adsorption. The DSSCs made from the electrosprayed materials shows a 7.2% light-to-electricity efficiency, and the maximum external quantum efficiency (EQE) at 530 nm is over 90%. The UV-Vis diffusion reflectance and EQE measurement proved that the as-prepared TiO2 materials show dual functions of light scattering and dye-adsorption, which is an important functional material in DSSCs. (C) 2015 Elsevier B.V. All rights reserved.