TITLE:
Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film
AUTHORS:
Feridoun Samavat, Farzane Mahmoodi, Parisa Taravati Ahmad, Mohammad Faraz Samavat, Mohammad Hossein Tavakoli, Sanaz Hadidchi
KEYWORDS:
Pd Properties; Coating; XRD; Band Gap; Annealing; Crystallite Nanostructure
JOURNAL NAME:
Open Journal of Physical Chemistry,
Vol.2 No.2,
May
22,
2012
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.