THE DETERMINATION OF OPTICAL BAND AND OPTICAL CONSTANTS OF MnO2THIN FILMS PREPARED BY SPRAY PYROLYSIS

Authors

  • Salah K. Hazaa Physics Department, College of Education, Al-Mustansiriya University, Baghdad, Iraq Email: salehhazaa@yahoo.com

DOI:

https://doi.org/10.12928/bfi-jifpa.v5i1.243

Keywords:

MnO2, thin films, spray pyrolysis, optical properties

Abstract

Polycrystal MnO2thin films have been deposited using spray pyrolysis deposition technique under a varied thickness. By analyzing the X-ray diffraction, the structure of deposited films was found to be polycrystalline. Different optical properties of these films have been investigated by observing the optical
absorption and transmission spectra. Various optical constants such as optical energy gap, the width of band tails of localized states into the gap, and steepness parameter, were calculated and the variation of various optical parameters such as refractive index, extinction coefficient and dielectric constant, with phonon energy are estimated.

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Published

2013-01-02

Issue

Vol. 5 No. 1 (2013)

Section

Articles

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