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Influence of post annealing on the structural and optical properties of MgxZn1-xO films

B. K. SONAWANE1, M. P. BHOLE1, D. S. PATIL1,*

Affiliation

  1. Department of Electronics, North Maharashtra University, Jalgaon, [Maharashtra], India

Abstract

Structural and optical properties of MgxZn1-xO (x = 0.05) films grown on microscopic glass substrates by sol-gel technique were investigated. Zinc acetate dihydrate, Magnesium acetate as starting precursors and ethanol as a solvent were used to prepare the gel solution. These deposited films were annealed at three different temperatures and characterized by X-ray Diffractometer (XRD), Scanning Electron Microscopy (SEM) and UV-VIS Spectrophotometer for studying structural and optical properties. Energy dispersive analysis by X-ray (EDAX) was used to determine incorporation of Mg content into ZnO. EDAX spectra clearly show the incorporation of Mg into the ZnO films. XRD spectrum reveals that the deposited Mg doped ZnO films were polycrystalline in nature. Crystallinity of these films was found to be increase with increase in post annealing temperature. Optical band gap of MgxZn1-xO annealed films was found to be increased from 3.33 to 3.37eV as estimated from both transmission spectra and the absorption coefficients. The band gap was observed to be blue shifted with increasing annealing temperature.

Keywords

Post annealing, MgxZn1-xO, Sol gel, Structural properties, SEM, UV-VIS, EDAX, XRD.

Citation

B. K. SONAWANE, M. P. BHOLE, D. S. PATIL, Influence of post annealing on the structural and optical properties of MgxZn1-xO films, Optoelectronics and Advanced Materials - Rapid Communications, 2, 11, November 2008, pp.714-718 (2008).

Submitted at: Sept. 7, 2008

Accepted at: Oct. 30, 2008