OJPC  Vol.2 No.2 , May 2012
Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film
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.
Cite this paper: F. Samavat, F. Mahmoodi, P. Taravati Ahmad, M. Faraz Samavat, M. Hossein Tavakoli and S. Hadidchi, "Effect of Annealing Temperature on the Optical Properties of Palladium Thin Film," Open Journal of Physical Chemistry, Vol. 2 No. 2, 2012, pp. 103-106. doi: 10.4236/ojpc.2012.22014.

[1]   J. B. Pel?ka, W. Paszkowicz, P. Dluzewski, M. Brust, C. J. Kiely, M. Knapp and E. Czerwosz, “Characterisation of Thin Films Containing Au and Pd Nanoparticles by Grazing-Incidence X-Ray Diffraction and Related Methods,” Journal of Alloys and Compounds, Vol. 328, No. 1-2, 2001, pp. 248-252. doi:10.1016/S0925-8388(01)01303-2

[2]   K. R. Patil, Y. K. Hwang, M.-J. Kim, J.-S. Chang and S.-E. Park, “Perparation of Thin Films Comprising Palladium Nanoparticles by a Solid-Liquid Interface Reaction Technique,” Journal of Colloid and Interface Science, Vol. 276, No. 2, 2004, pp. 333-338. doi:10.1016/j.jcis.2004.04.001

[3]   K. Zhang, H. Y. Gao, Z. B. Rui, Y. S. Lin and Y. D. Li, “Preparation of Thin Palladium Composite Membranes and Application to Hydrogen/Nitrogen Separation,” Chinese Journal of Chemical Engineering, Vol. 15, No. 5, 2007, pp. 643-647. doi:10.1016/S1004-9541(07)60139-6

[4]   E. Kowalska, E. Czerwosz and J. Radomska, “The Methods of Synthesis of Nanopores Carbon-Palladium Materials,” Electronics, Vol. 1, 2009, pp. 32-35.

[5]   C. Benvenuti, P. Chiggiato, F. Cicoira, Y. L’Aminot and V. Ruzinov, “Vacuum Properties of Palladium Thin Film Coatings,” Vacuum, Vol. 73, No. 2, 2004, pp. 139-144. doi:10.1016/j.vacuum.2003.12.022

[6]   X. Wei, T. Wei, H. Xiao and Y. S. Lin, “Nano-Structured Pd-Long Period Fiber Gratings Integrated Optical Sensor for Hydrogen Detection,” Sensors and Actuators B: Chemical, Vol. 134, No. 2, 2008, pp. 687-693. doi:10.1016/j.snb.2008.06.018

[7]   N. A. Shah, A. Nazir, W. Mahmood, W. A. A. Syed, S. Butt, Z. Ali and A. Maqsood, “Physical Properties and Characterization of Ag Doped CdS Thin Films,” Journal of Alloys and Compounds, Vol. 512, No. 1, 2012, pp. 27-32. doi:10.1016/j.jallcom.2011.08.081

[8]   A. F. Khan, M. mehmood, A. M. Rana and T. Muhammad, “Effect of Annealing on Structural, Optical and Electrical Properties of Nanostructured Ge Thin Films,” Applied Surface Science, Vol. 256, No. 7, 2010, pp. 2031-2037. doi:10.1016/j.apsusc.2009.09.043

[9]   M. F. Zaki, “Gamma-Induced Modification on Optical Band Gap of CR-39 SSNTD,” Brazilian Journal of Physics, Vol. 38, No. 4, 2008, pp. 175404-17508.

[10]   T. Dhannia, S. Jayalekshmi, M. C. SanthoshKumar, T. PrasadaRao and A. ChandraBose, “Effect of Aluminium Doping and Annealing on Structural and Optical Properties of Cerium Oxide Nanocrystals,” Journal of Physics and Chemistry of Solids, Vol. 70, No. 11, 2009, pp. 1443-1447. doi:10.1016/j.jpcs.2009.09.001

[11]   S. Varghese, M. Iype, E. J. Mathew and C. S. Menon, “Determination of the Energy Band Gap of Thin Films of Cadmium Sulphide, Copper Phthalocyanine and Hybrid Cadmium Sulphide/Copper Phthalocyanine from Its Optical Studies,” Materials Letters, Vol. 56, No. 6, 2002, pp. 1078-1083. doi:10.1016/S0167-577X(02)00682-1

[12]   J.-W. Jeon, D.-W. Jeon, T. Sahoo, M. Kim, J.-H. Baek, J. L. Hoffman, N. S. Kim and I.-H. Lee, “Effect of Annealing Temperature on Optical Band-Gap of Amorphous Indium Zinc Oxide Film,” Journal of Alloys and Compounds, Vol. 509, No. 41, 2011, pp. 10062-10065. doi:10.1016/j.jallcom.2011.08.033

[13]   T. P. Kumar, S. Saravanakumar and K. Sankaranayanan, “Effect of Annealing on the Surface and Band Gap Alignment of CdZnS Thin Films,” Applied Surface Science, Vol. 257, No. 6, 2011, pp. 1923-1927. doi:10.1016/j.apsusc.2010.09.027