Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe
Mercury vacancies, acting as double acceptors, are the dominant point defects in ternary HgCdTe alloys. Though HgCdTe is one of the leading materials in infrared optoelectronics, the energy spectra of the vacancies are still a matter of some debate. This work investigated the rates at which holes ar...
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MDPI AG
2022-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/12/887 |
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| author | Dmitry V. Kozlov Vladimir V. Rumyantsev Anton V. Ikonnikov Vladimir V. Utochkin Anna A. Razova Ksenia A. Mazhukina Nikolay N. Mikhailov Sergey A. Dvoretsky Sergey V. Morozov Vladimir I. Gavrilenko |
| author_facet | Dmitry V. Kozlov Vladimir V. Rumyantsev Anton V. Ikonnikov Vladimir V. Utochkin Anna A. Razova Ksenia A. Mazhukina Nikolay N. Mikhailov Sergey A. Dvoretsky Sergey V. Morozov Vladimir I. Gavrilenko |
| author_sort | Dmitry V. Kozlov |
| collection | DOAJ |
| description | Mercury vacancies, acting as double acceptors, are the dominant point defects in ternary HgCdTe alloys. Though HgCdTe is one of the leading materials in infrared optoelectronics, the energy spectra of the vacancies are still a matter of some debate. This work investigated the rates at which holes are captured to a singly ionized mercury vacancy via acoustic phonon emission in narrow-gap Hg<sub>1−x</sub>Cd<sub>x</sub>Te with technologically relevant x~0.22. Combined with the calculated rates of intracenter transitions, the data allow one to predict the most pronounced optical transitions in the emission spectrum of a double-charged acceptor. The results are sustained by the photoluminescence spectroscopy in the terahertz domain, allowing one to identify the emission band that is related to neutral vacancies. |
| first_indexed | 2024-03-09T15:57:14Z |
| format | Article |
| id | doaj.art-395ba269536b46d284e84f2eef642a51 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T15:57:14Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-395ba269536b46d284e84f2eef642a512023-11-24T17:24:13ZengMDPI AGPhotonics2304-67322022-11-0191288710.3390/photonics9120887Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTeDmitry V. Kozlov0Vladimir V. Rumyantsev1Anton V. Ikonnikov2Vladimir V. Utochkin3Anna A. Razova4Ksenia A. Mazhukina5Nikolay N. Mikhailov6Sergey A. Dvoretsky7Sergey V. Morozov8Vladimir I. Gavrilenko9Institute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaFaculty of Physics, Lomonosov Moscow State University, 119991 Moscow, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaRzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, RussiaRzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaInstitute for Physics of Microstructures of RAS, Department of Semiconductor Physics, 603950 Nizhny Novgorod, RussiaMercury vacancies, acting as double acceptors, are the dominant point defects in ternary HgCdTe alloys. Though HgCdTe is one of the leading materials in infrared optoelectronics, the energy spectra of the vacancies are still a matter of some debate. This work investigated the rates at which holes are captured to a singly ionized mercury vacancy via acoustic phonon emission in narrow-gap Hg<sub>1−x</sub>Cd<sub>x</sub>Te with technologically relevant x~0.22. Combined with the calculated rates of intracenter transitions, the data allow one to predict the most pronounced optical transitions in the emission spectrum of a double-charged acceptor. The results are sustained by the photoluminescence spectroscopy in the terahertz domain, allowing one to identify the emission band that is related to neutral vacancies.https://www.mdpi.com/2304-6732/9/12/887HgCdTemercury vacancydouble acceptorterahertz photoluminescence |
| spellingShingle | Dmitry V. Kozlov Vladimir V. Rumyantsev Anton V. Ikonnikov Vladimir V. Utochkin Anna A. Razova Ksenia A. Mazhukina Nikolay N. Mikhailov Sergey A. Dvoretsky Sergey V. Morozov Vladimir I. Gavrilenko Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe Photonics HgCdTe mercury vacancy double acceptor terahertz photoluminescence |
| title | Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe |
| title_full | Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe |
| title_fullStr | Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe |
| title_full_unstemmed | Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe |
| title_short | Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe |
| title_sort | non radiative transitions of holes on mercury vacancies in narrow gap hgcdte |
| topic | HgCdTe mercury vacancy double acceptor terahertz photoluminescence |
| url | https://www.mdpi.com/2304-6732/9/12/887 |
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