Preparation and Performance of CdSe sensitized TiO2-based Solar Cell Photoelectrode

Abstract

With the explosion of energy demand in human society, the efficient use of solar energy has become an inevitable part for human to develop and make progress today. Solar cell has gotten widespread concern of the scientific researchers due to its low production costs and high theoretical conversion efficiency. CdSe/TiO₂ heterojunction films are prepared by cyclic voltammetry and the CdSe is deposited on the TiO₂ nanorod array film. And the materials are cadmium chloride (CdCl₂·5H₂O) and selenous dioxide in this paper. The crystal structure, optical absorption capacity and photoelectric properties of the samples are studied by XRD, UV-VIS and electrochemical workstation at different annealing temperatures. The experimental results show that the CdSe/TiO₂ heterojunction thin films have the best photoelectric properties when the annealing temperature is 450 °C. And the photoelectric conversion efficiency can reach 8.75%, which indicates that the CdSe/TiO₂ nanorod array film has potential applications in the field of solar cells.