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Research Article

Influence of electron irradiation on the band gap and microhardness of TlInS2, TlInSSe and TlIn0.99Cr0.01S2 single crystals

F.К Khallokova Department of Physics, Bukhara Medical Institute named after. Abu Ali ibn Sino, Bukhara, Uzbekistan
,
G.T. Imanovab Ministry of Science and Education, Institute of Radiation Problems, Baku, Azerbaijan;c Department of Physics and Electronics, Khazar University, Baku, Azerbaijan;d Department of Physics, Western Caspian University, Baku, AzerbaijanCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0003-3275-300X
ORCID Icon,
S.Kh. Umarova Department of Physics, Bukhara Medical Institute named after. Abu Ali ibn Sino, Bukhara, Uzbekistan
,
M.Yu. Tashmetove Department of Physics, Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
,
N.Z. Gasanovf Department of Phyiscs, Institute of Physics under the Ministry of Science and Education of the Republic of Azerbaijan, Baku, Azerbaijan
,
Z.U. Esanove Department of Physics, Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
&
I.R. Bekpulatovg Department of Physics, Karshi State University, Karshi, Uzbekistan
 show all
Received 27 May 2024, Accepted 29 May 2024, Published online: 04 Jun 2024
 
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ABSTRACT

This work investigated the effect of partial replacement of sulphur atoms with selenium atoms (TlInSSe) and indium atoms with chromium atoms (TlIn0.99Cr0.01S2) on the band gap and microhardness of TlInS2 single crystals irradiated with electrons with energy of 2 MeV and a fluence of up to 1.5 × 1017 el/cm2. The band gap from the measured absorption spectra was determined using the Tauc method. It has been established that this irradiation leads to a decrease in the band gap in TlInS2, TlInSSe and TlIn0.99Cr0.01S2 crystals. It has been shown that after electron irradiation the microhardness of these crystals increased due to an increase in the size of crystallites on their surface.

Disclosure statement

No potential conflict of interest was reported by the author(s).

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