The results showed that these TiO2 spheres present obvious light-scattering function, in addi-tional to the high dye adsorption.
The DSSC with 7.2% energy conversion efficiency and over 90% external quantum efficiency(EQE) can be obtained.
Overall, it is shown that the combination ofelectrospray and hydrothermal post-treatment is a good methodto prepare TiO2 hierarchical nano-materials for DSSCs photoanode fabrication.