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Latest Issue of “ International Journal of Membrane Science and Technology” has published. Visit link; “ Latest Issue" ....! Special Issue of “International Journal of Membrane Science and Technology” is scheduled for Feb-2022..! Kindly Visit link: “Special Issues for IJMST”

Abstract: Study of Mid-Infrared Optical Properties of ZnS Thin Films by Spectroscopic Ellipsometry

Journal of Advanced Catalysis Science and Technology (Volume 2 Issue 1)
Study of Mid-Infrared Optical Properties of ZnS Thin Films by Spectroscopic Ellipsometry
Pages 44-49 Zhe Wang, Jun Xiao, Feng Miao and Zi Ma DOI: http://dx.doi.org/10.15379/2408-9834.2015.02.01.5 Published: 1 April 2015
Abstract
In order to obtain the mid-infrared optical properties of ZnS thin films, ZnS films with different thickness were prepared on K9 glass substrate by electronic beam evaporation. They were denoted by A、B、C . The optical properties of thin films were studied by Spectroscopic Ellipsometry. The measured date of film A 、B、C were fitted by Brendel oscillator, and based on ZnS film properties and the film forming characteristic of the ZnS film, building the model“substrate(K9 glass)/EMA(50% K9 glass and 50% ZnS)/ZnS/rough surface layer(50% ZnS and 50% air)/air”. The optical constants curve and thickness of ZnS thin film were got. The results shown that the evaluation function MSE is small when Brendel model is used in data fitting. Within the wavelength range of 3000nm ~ 12500nm, the ZnS thin films refractive index and extinction coefficient are reduced with increasing wavelength. The Extinction coefficient tends to zero near the long wavelengh. The thickness of ZnS measured value was closest to the theoretical value. The results have certain reference value to measurement and preparation of high quality ZnS thin film.
Keywords
Thin films, Optical constants, Ellipsometry, ZnS thickness of film.

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