The 18th International Theophilus Symposium (IFAC-2022) on Spectroscopy of Crystals Activated by Ions of Rare Earths and Transition Metals (August 22-26, 2022, Moscow)
Spectroscopy of condensed state

The manifestation of local vibrations in photoluminescence spectra of ZnO : Fe$^{3+}$

V. I. Sokolov^a, N. B. Gruzdev^a, V. V. Men'shenin^a, A. N. Kiryakov^b, A. F. Zatsepin^b, V. A. Vazhenin^b, G. A. Emel'chenko<sup>c

a</sup> Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 620108 Yekaterinburg, Russia
^b Ural Federal University named after the First President of Russia B. N. Yeltsin, 620002 Yekaterinburg, Russia
^c Osipyan Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia

Abstract: In this paper photoluminescense spectra and EPR-signals of ZnO single crystals, doped with manganese and containing (from EPR data) uncontrolled impurity of iron, were investigated. At the temperature of 4.5 K in photoluminescense spectrum the band in energy interval of 1.55–1.8 eV (12493–14508 cm$^{-1}$) was observed. This band contains some intensive lines; these lines are caused by Fe$^{3+}$ ions ($d^5$-configuration). The first and most intensive line at the energy of 1.79 eV corresponds to irradiative transition $^4T_1\to{}^6A_1$ in Fe$^{3+}$ ions. The other peaks are electronic-vibrational structure. This structure may be caused by force interaction in deformed Fe$^{3+}$–4O$^{2-}$ cluster.

Keywords: zinc oxide, Fe$^{3+}$ impurity, photoluminescence, EPR.

Received: 24.09.2022
Revised: 12.04.2023
Accepted: 13.04.2023

DOI: 10.21883/OS.2023.04.55556.52-22

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