Zinc Stannate (Zn_2SnO_4) Dye-Sensitized Solar Cells

摘要

We have successfully synthesized Zn_2SnO_4 nano-particles with desirable particle size from a hydrothermal process. We have demonstrated that the performance of Zn_2SnO_4 cells is comparable to that of TiO_2 cells in thin films. Because of its large band gap energy (3.6 eV), Zn_2SnO_4 cells could have better photostability against UV light than TiO_2 cells. Currently, the main limitation for Zn_2SnO_4 cells is the short electron diffusion length as indicated in the trend of J_(sc) with increased film thickness. Detailed studies of electron transport dynamics in a Zn_2SnO_4 nanoparticle film and explorations of other multication oxides are under investigation.