Dielectrics

Photoactive paramagnetic centers in ZnO single crystals with an admixture of iron, vanadium or manganese

V. A. Vazhenin^a, M. Yu. Artemov^a, A. P. Potapov^a, L. E. Li^b, A. V. Fokin<sup>a

a</sup> Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg, Russia
^b Institute of Cristallography Russian Academy of Sciences, Moscow, Russia

Abstract: In ZnO : Fe, ZnO : Mn, ZnO : V single crystals, the effect of irradiation with light with an energy of 1.32–3.0 eV on the EPR spectra of Fe$^{3+}$ and Mn$^{2+}$ centers was studied. In ZnO : Fe and ZnO : V the appearance of O$^-$ hole centers localized near $^7$Li$^+$ ions in the positions of Zn$^{2+}$ ions was observed, accompanied by the charge exchange Fe$^{3+}$ $\to$ Fe$^{2+}$. In ZnO : Mn, upon illumination, a change in the structure of the spectrum of forbidden Mn$^{2+}$ transitions was detected.

Keywords: zinc oxide, impurity centers, paramagnetic resonance, influence of lighting.

Received: 22.11.2023
Revised: 22.11.2023
Accepted: 24.11.2023

DOI: 10.61011/FTT.2024.01.56938.259

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