This article is cited in 9 papers

Electronic properties of semiconductors

Effect of iron impurities on the photoluminescence and photoconductivity of ZnSe crystals in the visible spectral region

Yu. F. Vaksman^a, Yu. A. Nitsuk^a, V. V. Yatsun^a, A. S. Nasibov^b, P. V. Shapkin<sup>b

a</sup> I. I. Mechnikov Odessa National University
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: The photoconductivity and photoluminescence of ZnSe:Fe crystals in the visible spectra region are studied. The scheme of optical transitions within Fe$^{2+}$ impurity centers is established. It is shown that the high-temperature photoconductivity of ZnSe:Fe crystals is controlled by optical transitions of electrons from the $^5E(F)$ ground state to the higher levels of excited states of Fe$^{2+}$ ions, with subsequent thermal activation of the electrons to the conduction band. Efficient excitation of intracenter luminescence of ZnSe:Fe crystals is attained with light corresponding to the region of intrinsic absorption in Fe$^{2+}$ ions.

Received: 01.03.2011
Accepted: 09.03.2011

 English version: Semiconductors, 2011, 45:9, 1129–1132

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