Nature of Blue Anti-Stokes Luminescence in ZnSe:Cr
V.Yu. Ivanov
Dnepropetrovsk State University, Dnepropetrovsk, Ukraine

Yu.G. Semenov
Institute of Semicond. Physics, Ukrainian Acad. Sciences, Kiev, Ukraine

M. Surma and M. Godlewski
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
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The mechanism of the anti-Stokes photoluminescence in ZnSe:Cr is dis­cussed. It is shown that the two-step ionization transitions of Cr(2+ ↔ 1+) result in appearance of the blue anti-Stokes photoluminescence of ZnSe:Cr. There are also some indications that the Auger type co-operative process can contribute to the photoluminescence excitation.
DOI: 10.12693/APhysPolA.88.743
PACS numbers: 78.55.Et, 71.55.Gs, 76.30.Fc