Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film

Feridoun Samavat, Farzane Mahmoodi, Parisa Taravati Ahmad, Mohammad Faraz Samavat, Mohammad Hossein Tavakoli, Sanaz Hadidchi

Department of Physics, Bu-Ali Sina University, Hamedan, Iran.

DOI: 10.4236/ojpc.2012.22014                

Abstract

In this paper, the effect of annealing temperature on the optical properties of palladium thin films has been investigated. The Pd thin films with thickness of about 123 ? were deposited on glass substrates by electron beam coating method. Then the palladium thin films were annealed in air at 350℃, 450℃, 550℃ and 650℃ for 1h and then cold slowly. All the initial Pd films were found to have amorphous structure. Their optical properties were studied as function of annealing temperature using Ultraviolet-Visible (UV-Vis) spectroscopy. The direct band gaps in Pd films have been de- termined. Decreasing the values of the direct band gap shows also increasing the Pd crystallite nanostructure with increasing annealing temperature.

Keywords

Pd Properties; Coating; XRD; Band Gap; Annealing; Crystallite Nanostructure

Conflicts of Interest

The authors declare no conflicts of interest.

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