Effect of Heat-Treatment on Electron Transport Process in TiO[sub 2] Nanotube Arrays Prepared Through Liquid Phase Deposition for Dye-Sensitized Solar Cells

Nanotube arrays of were synthesized by using a template of ZnO nanorod arrays on fluorine-doped transparent conducting oxide glass substrate by liquid phase deposition method. Dye N719-sensitized photoelectrochemical cells comprising nanotube arrays were fabricated and characterized. With an increase in the calcination temperature, the anatase content of the crystallized film increased and the conduction band of shifted toward a negative potential, resulting in an increase in the cell performance in terms of the short-circuit photocurrent density and open-circuit voltage.