Evolution of the Impurity Photoconductivity in CdHgTe Epitaxial Films with Temperature

The photoconductivity spectra of epitaxial CdHgTe films are investigated by Fourier-transform spectroscopy at various temperatures. Features associated with both the interband absorption and ionization of impurity/defect states are found in the spectra. Their evolution with temperature is traced. Th...

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Published inSemiconductors (Woodbury, N.Y.) Vol. 53; no. 9; pp. 1266 - 1271
Main Authors Uaman Svetikova, T. A., Ikonnikov, A. V., Rumyantsev, V. V., Kozlov, D. V., Chernichkin, V. I., Galeeva, A. V., Varavin, V. S., Mikhailov, N. N., Dvoretskii, S. A., Morozov, S. V., Gavrilenko, V. I.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2019
Springer Nature B.V
Subjects
2019
ABSORPTION
CADMIUM TELLURIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DEFECTS
EPITAXY
Evolution
FOURIER TRANSFORM SPECTROMETERS
Fourier transforms
IMPURITIES
IONIZATION
Magnetic Materials
Magnetism
March 11–14
Mercury cadmium tellurides
MERCURY TELLURIDES
Nizhny Novgorod
PHOTOCONDUCTIVITY
Physics
Physics and Astronomy
SPECTRA
Spectrum analysis
THIN FILMS
Xxiii International Symposium “Nanophysics and Nanoelectronics”
photoconductivity
CdHgTe
impurity
Fourier-transform spectroscopy
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Summary:The photoconductivity spectra of epitaxial CdHgTe films are investigated by Fourier-transform spectroscopy at various temperatures. Features associated with both the interband absorption and ionization of impurity/defect states are found in the spectra. Their evolution with temperature is traced. The temperatures of “vanishing” of the impurity features are determined, which makes it possible to assess the acceptor concentration in the structures under study using the electroneutrality equation.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782619090240