Influence of Cadmium Doping on Structural, Optical, electrical and Photocatalytic Properties of TiOz Thin Films Prepared by Spray Pyrolysis Technique  

作　　者：Selma M. H. AI-Jawad 

机构地区：[1]School of Applied Sciences, University of Technology, Baghdad, Baghdad, Iraq

出　　处：《Journal of Physical Science and Application》2016年第1期157-166,共10页物理科学与应用（英文版）

摘　　要：Undoped and doped cadmuim titanium oxide thin films at different percentage （1, 3, 4, and 5）% were fabricated by spray pyrolysis by using a solution of titanium tetrachloride and ethyl alcohol. The films have been deposited on heated quartz substrates at 623 K. After annealing for 120 min at 823 K, the initially amorphous films became polycrystalline with a predominant anatase structure and average crystallite sizes depending on dopant Cd concentration. Atomic force microscope （AIM） results show that the addition of the Cd to TiO2 thin films become smooth. Optical study shows the optical band gap, and transmission has been increasing with increasing doping concentration in TiO2 thin films. The electrical resistivity is decreases with increasing doping concentration Cd in TiO2 thin films could be attributed to the increasing charge concentration. Photocatalytic activity of the TiO2 films were studied by monitoring the degradation of aqueous methylene blue under UV light irradiation and was observed that increasing doping concentration had good photocatalytic activity which was explained as due to the structural and morphological properties of the films.

关 键 词：TiO2 spray pyrolysis cadmium dopent structural properties optical properties and photocatalytic properties. 

分 类 号：O4[理学—物理]