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This article is cited in 10 scientific papers (total in 10 papers)
CONDENSED MATTER
Features of photoluminescence of double acceptors in HgTe/CdHgTe heterostructures with quantum wells in a terahertz range
D. V. Kozlovab, V. V. Rumyantsevab, A. M. Kadykovac, M. A. Fadeevac, N. S. Kulikovab, V. V. Utochkinab, N. N. Mikhailovde, S. A. Dvoretskiife, V. I. Gavrilenkoab, H. W. Hubersc, F. Teppeg, S. V. Morozovba a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
b Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
c Institut für Physik, Humboldt-Universität zu Berlin, Berlin, Germany
d Novosibirsk State University, Novosibirsk, Russia
e Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
f Tomsk State University, Tomsk, Russia
g Laboratoire Charles Coulomb (L2C), Universite Montpellier, Montpellier, France
Abstract:
The terahertz photoluminescence spectra of HgTe/CdHgTe heterostructure with quantum wells under interband optical excitation with a power of 3 to 300 mW have been studied in the temperature range of 30-100 K. The photoluminescence spectrum includes a band corresponding to quantum energies below the width of the band gap. The position of this band does not change with increasing temperature. This property allows attributing it to the capture of holes by acceptor centers. It has been shown that these acceptor centers are singly ionized mercury vacancies, which are double acceptors. A nonmonotonic dependence of the intensity of a signal of a long-wavelength photoluminescence band on the power of an exciting source has been revealed. A short-wavelength photoluminescence band corresponding to interband transitions appears with an increase in the exciting power. It has been shown that this effect is caused by the saturation of the number of partially ionized mercury vacancies with increasing pump intensity.
Received: 22.03.2019 Revised: 22.03.2019 Accepted: 17.04.2019
Citation:
D. V. Kozlov, V. V. Rumyantsev, A. M. Kadykov, M. A. Fadeev, N. S. Kulikov, V. V. Utochkin, N. N. Mikhailov, S. A. Dvoretskii, V. I. Gavrilenko, H. W. Hubers, F. Teppe, S. V. Morozov, “Features of photoluminescence of double acceptors in HgTe/CdHgTe heterostructures with quantum wells in a terahertz range”, Pis'ma v Zh. Èksper. Teoret. Fiz., 109:10 (2019), 679–684; JETP Letters, 109:10 (2019), 657–662
Linking options:
https://www.mathnet.ru/eng/jetpl5905 https://www.mathnet.ru/eng/jetpl/v109/i10/p679
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