Charge transfer transitions in the photoluminescence spectra of Zn1?xMexO (Me?=?Mn, Ni, Co) oxide compounds

Charge transfer transitions in the photoluminescence spectra of Zn1?xMexO (Me?=?Mn, Ni, Co) oxide compounds

Crystals of Zn1-xCoxO and Zn1-xNixO are studied by photoluminescence at temperatures of 8 and 90 K. By resolving the spectra into sums of gaussian distributions and using the known positions of donor and acceptor levels of 3d-impurities relative to the edges of the allowed bands, the observed peaks...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2013-01, Vol.39 (1)
Hauptverfasser: Sokolov, VI, Gruzdev, N B
Format: Artikel
Sprache:eng
Schlagworte:
Band spectra
Bands
Charge transfer
Crystals
Nickel
Oxides
Photoluminescence
Spectra
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Zusammenfassung:Crystals of Zn1-xCoxO and Zn1-xNixO are studied by photoluminescence at temperatures of 8 and 90 K. By resolving the spectra into sums of gaussian distributions and using the known positions of donor and acceptor levels of 3d-impurities relative to the edges of the allowed bands, the observed peaks in the photoluminescence spectra are interpreted in terms of radiative recombination through donor and acceptor levels of nickel and cobalt ions. These results are compared with previously observed features of the photoluminescence spectra of Zn1-xMnxO crystals.
ISSN:1063-777X
DOI:10.1063/1.4775750