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Parametric Model of the Optical Constant Spectra of Hg1 – xCdxTe and Determination of the Compound Composition

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Abstract

A parametric model describing the spectra of optical constants n(λ) and k(λ) of a Hg1 – xCdxTe (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 δx = ±0.0035.

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Funding

This study was supported by the Ministry of Science and Higher Education of the Russian Federation (state contract no. 0306-2019-0004) and, in part, the Russian Foundation for Basic Research (project no. 19-29-20053).

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Authors and Affiliations

  1. Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    V. A. Shvets, D. V. Marin, V. G. Remesnik, I. A. Azarov, M. V. Yakushev & S. V. Rykhlitskii

  2. Novosibirsk State University, 630090, Novosibirsk, Russia

    V. A. Shvets

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  1. V. A. Shvets
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  2. D. V. Marin
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  3. V. G. Remesnik
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  4. I. A. Azarov
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  5. M. V. Yakushev
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  6. S. V. Rykhlitskii
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Correspondence to V. A. Shvets.

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Translated by A. Sin’kov

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Shvets, V.A., Marin, D.V., Remesnik, V.G. et al. Parametric Model of the Optical Constant Spectra of Hg1 – xCdxTe and Determination of the Compound Composition. Opt. Spectrosc. 128, 1948–1953 (2020). https://doi.org/10.1134/S0030400X20121042

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  • DOI: https://doi.org/10.1134/S0030400X20121042

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