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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 856Modification of some Optical and Mechanical...

Modification of some Optical and Mechanical Properties of Amorphous As-S-Se Thin Films by Copper Introduction

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Abstract:

Abstract. In this research experimental investigation of the influence of copper introduction on some relevant parameters in As-S-Se amorphous thin films is performed. Copper is introduced into As₂(S_0.5Se_0.5)₃ amorphous thin film in concentration of 3 at.%. Samples of As₂(S_0.5Se_0.5)₃ and Cu₃(As₂(S_0.5Se_0.5)₃)₉₇ amorphous thin films are prepared by the vacuum thermal evaporation technique from previously synthesized bulk samples. Envelope method is applied for the determination of the optical constants, using the transmission and reflection spectra. The dispersion of the refractive index is discussed in terms of the single oscillator model proposed by Wemple–DiDomenico. Values of absorption coefficients in the high absorption region are discussed according to Tauc's law.Instrumented indentation testing is performed, using the Berkovich geometry indenter, for obtaining the value of nano-hardness.All the determined parameters have shown the increase with introduction of copper into amorphous thin film.

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Material Science and Engineering Technology II

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Periodical:

Advanced Materials Research (Volume 856)

Pages:

267-271

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.856.267

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Online since:

December 2013

Authors:

D.D. Štrbac, G.R. Strbac, G. Stojanovic, S.R. Lukic, D.D. Petrovic

Keywords:

Chalcogenides, Hardness, Optical Property, Thin Film

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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