Hierarchical TiO2 microspheres comprised of anatase nanospindles for improved electron transport in dye-sensitized solar cells
Abstract
Hierarchical TiO2 microspheres assembled by nanospindles were prepared via a two-step hydrothermal method. The as-prepared products have uniform diameters of ∼450 nm and surface area of ∼88 m2 g−1. The optical investigation evidenced that the photoanode film has a prominent light scattering effect at a wavelength range of 600–800 nm and possesses enhanced