STUDY OF THE FORMATION OF RADIATION DEFECTS IN IRRADIATED SILICON SAMPLES, DOPED WITH CHROMIUM ATOMS
ДОСЛІДЖЕННЯ УТВОРЕННЯ РАДІАЦІЙНИХ ДЕФЕКТІВ В ОПРОМЕНЕНИХ ЗРАЗКАХ КРЕМНІЮ, ЛЕГОВАНИХ АТОМАМИ ХРОМУ
Nabiyev Sh.I. Bozorov Kh.N. Nasritdinov A. Ikramov R.G. Yuldoshev M.A. Sattarov N.A. Edilboyev U. Adilkhan S.M. Tursinbaev S.A. Otarbaev A.E. Kasimov S.M.
14 March 2026V N Karazin Kharkiv National University
East European Journal of Physics
2026#2026Issue 1228 - 232 pp.
This work presents an investigation of radiation-induced defect formation in single-crystal n-type silicon doped with chromium (n-Si) using positron annihilation spectroscopy. The initial silicon samples, phosphorus-doped during crystal growth, were subsequently modified by chromium diffusion and then irradiated with 2 MeV protons at a beam current of 0.5 μA using the EG-5 accelerator facility. The measurements revealed the formation of characteristic radiation-induced vacancy-type defects, including A-centers, E-centers, divacancies, and their stable complexes. A comparative analysis of chromium-doped and undoped samples demonstrated a pronounced difference in the accumulation rate of these defects. It was established that the presence of chromium atoms in the bulk of n-type silicon significantly suppresses radiation defect formation: the concentration of vacancy-related defects in n-Si was found to be approximately 1.5–2 times lower than in the reference n-Si samples irradiated under identical conditions. These results confirm that chromium doping enhances the radiation resistance of silicon and can be considered an effective approach for modifying semiconductor materials intended for operation in environments with high radiation exposure.
Chromium , Doping , Irradiation , Positron annihilation , Proton , Semiconductor , Silicon
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Namangan State Technical University, Uzbekistan
Turan International University, Namangan, Uzbekistan
Kimyo International University in Tashkent, Uzbekistan
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, Uzbekistan
Institute of Nuclear Physics ARKAE, Almaty, Kazakhstan
Nukus State Pedagogical Institute Named After Ajiniyaz, Nukus, Uzbekistan
Namangan State Technical University
Turan International University
Kimyo International University in Tashkent
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Institute of Nuclear Physics ARKAE
Nukus State Pedagogical Institute Named After Ajiniyaz
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