Investigations on impact of post-heat temperature on structural, optical and electrical properties of Al-doped ZnO thin films prepared by sol-gel method

M  Mohammadi; M  Rezaee Rokn Abadi and H  Arabshahi nbsp

doi:10.17485/ijst/2010/v3i2.4

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Investigations on impact of post-heat temperature on structural, optical and electrical properties of Al-doped ZnO thin films prepared by sol-gel method

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2010/v3i2.4

Year: 2010, Volume: 3, Issue: 2, Pages: 110-112

Original Article

Investigations on impact of post-heat temperature on structural, optical and electrical properties of Al-doped ZnO thin films prepared by sol-gel method

M. Mohammadi, M. Rezaee Rokn-Abadi and H. Arabshahi ^*

Dept. of Physics, Ferdowsi University of Mashhad, Mashhad, Iran
[email protected] , [email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Aluminum doped ZnO (AZO) thin films have been prepared by spin coating route on glass substrate. The structural, optical and electrical thin films have been characterized in different post-heat temperatures between 450 and 600^o C. Xray diffraction analysis has revealed hexagonal wurtzite structure with (002) preferred orientation which increased in crystallite size by increasing post-heat temperature. The optical spectra of the films showed the transmittance higher than 90% within the visible wavelength region. Our results show that optical gap and surface resistance of the films are decreased by increasing post-heat temperature.
Keywords: Sol-gel method, optical spectra, post-heat temperature, spin coating.