International Physics Conference, St. Petersburg, October 23-27, 2023, St. Petersburg

Investigation of the Cr$^{3+}$ impurity luminescence in proton-irradiated $\beta$-Ga$_2$O$_3$

V. Yu. Davydov^a, A. N. Smirnov^a, I. A. Eliseyev^a, Yu. È. Kitaev^a, Sh. Sh. Sharofidinov^a, A. A. Lebedev^a, D. Yu. Panov^b, V. A. Spiridonov^b, D. A. Bauman^b, A. E. Romanov^ab, V. V. Kozlovsky<sup>c

a</sup> Ioffe Institute, 194021 St. Petersburg, Russia
^b St. Petersburg National Research University of Information Technologies, Mechanics and Optics, 197101 St. Petersburg, Russia
^c Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia

Abstract: Proton irradiation of $\beta$-Ga$_2$O$_3$ crystals has been established to lead to a significant increase in the amount of Cr$^{3+}$ ions being active in luminescence. Using angle-resolved luminescence, the features of the spectra of Cr$^{3+}$ ions were studied. The high sensitivity of photoluminescence spectra and the related selection rules to the local symmetry of Cr$^{3+}$ ions in the $\beta$-Ga$_2$O$_3$ matrix has been found. The results obtained indicate the potential possibility of using $\beta$-Ga$_2$O$_3$3 crystals as optical dosimeters of proton irradiation.

Keywords: $\beta$-Ga$_2$O$_3$, $\alpha$-Ga$_2$O$_3$, proton irradiation, photoluminescence, symmetry analysis.

Received: 19.05.2023
Revised: 18.07.2023
Accepted: 30.10.2023

DOI: 10.61011/FTP.2023.07.56794.5202C

Bibliographic databases:

•