Abstract
A long-wavelength band caused by transitions between states related to the valence band is detected in the photoconductivity spectra of Hg y Te1 – y /Cd x Hg1 – x Te (CMT) structures with quantum wells. The energy states of mercury vacancies in quantum wells of CMT structures is calculated taking into account a chemical shift. It is shown that the long-wavelength band observed in the photoconductivity spectra of these structures is associated with the ionization of divalent acceptor centers which are such vacancies.
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Original Russian Text © D.V. Kozlov, V.V. Rumyantsev, S.V. Morozov, A.M. Kadykov, M.A. Fadeev, V.S. Varavin, N.N. Mikhailov, S.A. Dvoretsky, V.I. Gavrilenko, F. Teppe, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 12, pp. 1690–1696.
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Kozlov, D.V., Rumyantsev, V.V., Morozov, S.V. et al. Mercury vacancies as divalent acceptors in Hg y Te1 – y /Cd x Hg1 – x Te structures with quantum wells. Semiconductors 50, 1662–1668 (2016). https://doi.org/10.1134/S1063782616120113
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DOI: https://doi.org/10.1134/S1063782616120113