V. A. Shvets, D. V. Marin, V. G. Remesnik, I. A. Azarov, M. V. Yakushev, S. V. Rykhlitskii, “Parametric model of the optical constant spectra of Hg$_{1-x}$Cd$_{x}$Te and determination of the compound composition”, Optics and Spectroscopy, 2020, Volume 128, Issue 12,Pages 1815

This article is cited in 5 papers

Spectroscopy of condensed matter

Parametric model of the optical constant spectra of Hg$_{1-x}$Cd$_{x}$Te and determination of the compound composition

V. A. Shvets^ab, D. V. Marin^b, V. G. Remesnik^b, I. A. Azarov^b, M. V. Yakushev^b, S. V. Rykhlitskii^b

^a Novosibirsk State University
^b Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk

Abstract: A parametric model describing the spectra of optical constants $n(\lambda)$ and $k(\lambda)$ of a Hg$_{1-x}$Cd$_{x}$Te (MCT) solid solution for the $x$ values in the range from 0.2 to 0.4 is developed. This model is based on empirical data measured in situ during the epitaxial growth of solid-solution layers. Several versions of application of the obtained model for in situ real-time determination of the MCT composition have been considered. A technique for determining the composition using spectral ellipsometric measurements is proposed, which ensures the error of no more than $\delta x$ = $\pm$ 0.0035.

Keywords: mercury–cadmium–tellurium, compound composition, ellipsometry, optical constant spectra, in situ monitoring.

Received: 27.12.2019
Revised: 05.08.2020
Accepted: 14.08.2020

DOI: 10.21883/OS.2020.12.50315.349-20