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STRUCTURAL CHANGES IN CdTe SINGLE CRYSTALS UPON IRRADIATION WITH HEAVY IONS OF INDERENT GASES

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Sultonov N., Akobirova A.T., Naimov U.R.,

Rahmatov B.A., Hamrokulov R.B.

REVIEWER: Makhsudov B.I.,

Doctor of Physical and Mathematical Sciences,

Professor

 

REFERENCES

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STRUCTURAL CHANGES IN CdTe SINGLE CRYSTALS UPON IRRADIATION WITH HEAVY IONS OF INDERENT GASES

The paper presents the results of studies on the production of a polycrystalline or amorphous layer by irradiation of single-crystalline cadmium telluride with ions of inert gases differing in radii. The influence of the ion radius on the resistivity and structure of the (111) layer of a single crystal of cadmium telluride has been studied. The samples were irradiated with neon, argon and xenon ions with radii of 38, 71 and 108 picometers (10-12 m), respectively. The radiation dose for all ions was 250 Mrad. It has been shown that ions with a large radius have the strongest influence on structural transformations; at the same dose (250 Mrad), the drop in intensity of the (111) reflection under the influence of xenon ions is twice as high as that of neon ions. In accordance with X-ray data, as the radius of the ion increases, the resistivity increases, and the larger the radius of the ion, the greater the rate of increase r. Irradiation transforms a single crystal into a polycrystalline state with the formation of a large number of defects, which are sources of current carrier capture, which leads to an increase in r. The increasing growth of r with increasing ion radius is apparently due to the fact that ions with a larger radius have a significantly larger effective cross section for interaction with the crystal.

Key words: structure, irradiation, ion radius, conductivity, resistivity, single crystal, polycrystal, defect, charge carriers

 

Information about the authors:  Sultonov Nizom – Tajik National University, Doctor of  Physical and Mathematical Sciences, Professor of the Department of Physical Electronics. Address: 734025, Dushanbe, Republic of Tajikistan, Rudaki Avenue, 17. Phone: 988003588. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Akobirova Aziza Toshpulatovna – Tajik National University, Ph.D., Associate Professor, Department of Physical Electronics, Tajik National University. Address: 734025, Dushanbe, Republic of Tajikistan, Rudaki Avenue, 17. Phone: (+992) 907917626. E-mail: аThis email address is being protected from spambots. You need JavaScript enabled to view it.

Naimov Umedjon Rozibekovich – Tajik National University, Ph.D., Art. teacher  Department of Physical Electronics. Address: 734025, Dushanbe, Republic of Tajikistan, Rudaki Avenue, 17. Phone: (+992) 918697984. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Rahmatov Badurdin Amirulloevich – Tajik National University, Ph.D., Art. teacher Department of Physical Electronics. Address: 734025, Dushanbe, Republic of Tajikistan, Rudaki Avenue, 17. Phone: (+992) 981006951. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Hamrokulov Rajabmurod Badriddinovich – Tajik National University, Ph.D., Associate Professor of the Department of Physical Electronics. Address: 734025, Dushanbe, Republic of Tajikistan, Rudaki Avenue, 17. Phone: (+992)904160775. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

 

Article received 20.09.2023

Approved after review 16.12.2023

Accepted for publication 29.02.2024

   
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