INFLUENCE OF THE X-RAY IRRADIATION ON A CRYSTALS e-TlInS2 POLITIPES CONDUCTIVITY

ABSTRACT

Gololobov Yu.P., Borovoy N.A. An influence of the x-ray irradiation on a crystals e-TlInS2 politipes conductivity. Visnyk National Transport University. Series «Technical sciences». Scientific and Technical Collection. - Kyiv: National Transport University, 2021. - Issue 1 (48).

It was investigated the influence of temperature changes on conductivity of a non-irradiated and X- ray radiated samples of e-TlInS2 crystals polytypies.

Object of the study - irradiated and radiated samples of e-TlInS2 crystals polytypes.

Purpose of the study - experimental investigation conductivity temperature dependences on the DC (direct current) e-TlInS2 crystals irradiated and X-ray radiated С- and 2С- polytypes.

Method of the study - the temperature dependence of electrical conductivity on DC was experimentally investigated in temperature range Т = 100-300 K for the non-irradiated and X-ray radiated C- and 2C-polytypes of e-TlInS2 crystals. It is shown that the basic mechanism of transfer of charge in the temperatures interval T=130-165 K for both e-TlInS2 crystals polytypies is variable range hopping conduction and such temperature intervals are wider in case of the radiated samples. The densities of localized states near the Fermi level were calculated, for both non-irradiated and X-ray radiatied (dose 2.7х103 Gy) samples of e-TlInS2 crystals polytypies. It was discovered that irradiation by the indicated dose of X-ray radiation of the samples both crystals e-TlInS2 polytypies increase of their conductivity, almost on an order, and also is accompanied by disappearance for non-irradiated sample of C-polytype unusual for semiconductors temperatures change of conductivity in the interval T=196-214 K.

KEYWORDS: POLYTYPES, X-RAYS RADIATION, CONDUCTIVITY, SEMICONDUCTORS, HOPPING CONDUCTIVITY

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AUTHOR

Gololobov Yurii P., doctor of sciences, professor, National Transport University, professor of department, Kyiv, e-mail: «Yuriy Gololobov» <gololo@ukr.net>, tel. +380442846709, Ukraine, 01103, Kyiv, M. Boychuk str., 42, of. 406, orcid.org/0000-0003-3360-6669.

Borovoy Mykola O., doctor of sciences, professor, Kyiv Taras Shevchenko National University, head department of general physics, e-mail: borovoy@univ.kiev.ua, tel. +380445262288, Ukraine, 03680, Kyiv, Acad. Glushkoa Prosp.2, build. 1, of. 225, orcid.org/0000-0002-2435-2620.

REVIEWER

IGulyayev V.I., Engineering sciences (Dr.), professor, National Transport University, head department of mathematics, Kyiv, Ukraine.

Ilin Р.Р., Ph. D., associate professor, National University of Life and Environmental Sciences of Ukraine, associate professor department of physics, Kyiv, Ukraine.

 

Article language: Ukrainian

Open Access: http://publications.ntu.edu.ua/visnyk/48/101-108.pdf

Print date: 15.03.2021

Online publication date: 05.04.2021

 

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