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A study on optical, morphological and mechanical properties of Al2O3 ultra-thin films deposited by RF reactive magnetron sputtering

Date

2015

Author

Pat S.
Özen S.
Şenay V.
Aydo?muş T.
Elmas S.
Korkmaz Ş.
Ekem N.
Balba? M.Z.

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Abstract

The Al2O3 ultra-thin films with the thicknesses of 30 nm and 35 nm were deposited on glass microscope slides by a radio frequency reactive magnetron sputtering system. The optical, morphological and mechanical properties were investigated as function of the film thickness. The refractive index of the resulting Al2O3 ultra-thin film increased with the increasing thickness. Both the films showed high transparency of > 85% and low reflectivity of < 10% in the visible and near infrared region. A band gap of ?8.65 eV was obtained for the 30 nm film and ?7.53 eV for the 35 nm film from an empirical relation between refractive index and band gap. According to the results obtained from the AFM studies, the root mean square surface roughness of the films are 3.67 nm and 3.77 nm for the 30 nm and 35 nm film, respectively. The hardness and Young modulus values decreased with the increasing film thickness. Copyright © 2015 Inderscience Enterprises Ltd.

Source

International Journal of Surface Science and Engineering

Volume

9

Issue

5

URI

https://dx.doi.org/10.1504/IJSURFSE.2015.072061
https://hdl.handle.net/20.500.12403/751

Collections

  • Scopus İndeksli Yayınlar Koleksiyonu [570]
  • WoS İndeksli Yayınlar Koleksiyonu [372]

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    Şenay V.; Pat S.; Korkmaz Ş.; Aydo?muş T.; Elmas S.; Özen S.; Ekem N.; Balba? M.Z. (Elsevier B.V., 2014)
    In this study, ZnO thin films were deposited on glass substrates by reactive RF magnetron sputtering method at argon-oxygen gas mixing (1:1) atmosphere. Some properties of the synthesized films were investigated by ...
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    Korkmaz Ş.; Geçici B.; Korkmaz S.D.; Mohammadigharehbagh R.; Pat S.; Özen S.; Şenay V.; Yudar H.H. (Elsevier Ltd, 2016)
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    The influences of the effects of sputtering power on the optical and structural properties of ZnO thin films were investigated. The ZnO layers were deposited on glass slides by RF magnetron sputtering. RF sputtering powers ...



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