The manifestation of charge transfer transitions in photoluminescence spectra of Zn1-xMexO oxide (Me - Mn, Ni, Co) compounds
V.I. Sokolov, N.B. Gruzdev
Institute of Metal Physics , S. Kovalevskoyi st. 18, Ekaterinburg 620990, Russia
V.A. Pustovarov, and V.N. Churmanov
Ural Federal University named after the first President of Russia B.N.Yeltsin, Mira st. 19, Ekaterinburg 620002, Russia pos Анотація:
Received Octouber 10, 2012
The paper concerns the investigation of Zn1–xCoxO
and Zn1–xNixO crystals by the photoluminescent method at temperatures of 8 K and 90 K. Taking into account
the expansions of the photoluminescence spectra into the sums of distributions Gauss functions and the well-known positions of donor and acceptor levels of 3d-impurities regarding the edges of conduction and valence bands, we interpreted the peaks observed in
the photoluminescence spectra as a result of radiative recombination through the donor and acceptor levels
of nickel and cobalt ions. The obtained results are compared with the peculiarities observed earlier in the
photoluminescence spectra of Zn1–xMnxO crystals.
PACS: 71.35.Cc Intrinsic properties of excitons; optical absorption spectra; PACS: 71.55.–i Impurity and defect levels; PACS: 71.55.Gs II–VI semiconductors; PACS: 78.55.–m Photoluminescence, properties and materials; PACS: 78.55.Et II–VI semiconductors.