Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Photoconductivity spectroscopy of arsenic-related acceptors in HgCdTe. / Ikonnikov, Anton; Rumyantsev, Vladimir; Sotnichuk, Mikhail и др.
в: Semiconductor Science and Technology, Том 38, № 8, 085003, 08.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Photoconductivity spectroscopy of arsenic-related acceptors in HgCdTe
AU - Ikonnikov, Anton
AU - Rumyantsev, Vladimir
AU - Sotnichuk, Mikhail
AU - Mikhailov, Nikolay
AU - Dvoretsky, Sergey
AU - Varavin, Vasily
AU - Yakushev, Maxim
AU - Morozov, Sergey
AU - Gavrilenko, Vladimir
N1 - This work was supported by the Russian Science Foundation (grant #22-12-00298). The authors are grateful to T A Uaman Svetikova for PC spectra measurements assistance, D V Kozlov for helpful discussions and Arina A. Yantser for assistance in the manuscript preparation. Публикация для корректировки.
PY - 2023/8
Y1 - 2023/8
N2 - The arsenic impurity is widely considered to be the best choice for p-type doping of HgCdTe ternary alloys, which has been a formidable problem for decades. This work studies the terahertz photoconductivity of Hg1-xCd xTe with x ∼ 0.22 doped with arsenic and subjected to activation annealing to obtain p-type conductivity. In addition to the inevitable photoexcitation lines of mercury vacancies, which act as double acceptors, the spectra contain a distinctive line associated with the photoexcitation of the arsenic-related acceptor. In contrast to the predictions of the effective mass approximation, the binding energy of the acceptor is found to be about 25 meV. The possible reasons for this unexpectedly high chemical shift, which is not quite consistent with the data recently obtained from photoluminescence and Hall effect measurements, are discussed.
AB - The arsenic impurity is widely considered to be the best choice for p-type doping of HgCdTe ternary alloys, which has been a formidable problem for decades. This work studies the terahertz photoconductivity of Hg1-xCd xTe with x ∼ 0.22 doped with arsenic and subjected to activation annealing to obtain p-type conductivity. In addition to the inevitable photoexcitation lines of mercury vacancies, which act as double acceptors, the spectra contain a distinctive line associated with the photoexcitation of the arsenic-related acceptor. In contrast to the predictions of the effective mass approximation, the binding energy of the acceptor is found to be about 25 meV. The possible reasons for this unexpectedly high chemical shift, which is not quite consistent with the data recently obtained from photoluminescence and Hall effect measurements, are discussed.
KW - HgCdTe
KW - acceptors
KW - arsenic-related
KW - photoconductivity
KW - spectroscopy
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85163343205&origin=inward&txGid=c6f81422579325b3aafe0bd13ee35f1f
UR - https://www.mendeley.com/catalogue/5a0791f7-e77a-3663-a155-ae516c4de38a/
U2 - 10.1088/1361-6641/acda58
DO - 10.1088/1361-6641/acda58
M3 - Article
VL - 38
JO - Semiconductor Science and Technology
JF - Semiconductor Science and Technology
SN - 0268-1242
IS - 8
M1 - 085003
ER -
ID: 59263399