| Role of Auger-Type Energy Transfer Processes in Quenching of Anti-Stokes Emission in Chromium and Iron Doped ZnSe: ODMR, Optical and Time-Resolved Study |
| V.Yu. Ivanov a , G. Karczewski a , M. Godlewski a,b , A.R. Omel'chuk c , A.E. Belyaev c and N.V. Zhavoronkov d a Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland b College of Science, Cardinal S. Wyszyński University, Warsaw, Poland c Institute of Semiconductor Physics NASU, Prospekt Nauki 45, Kiev, 252028, Ukraine d Research Institute of Material Science and Technology, Moscow, Russia |
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| Energy up-conversion in chromium and iron doped ZnSe results in the appearance of an anti-Stokes luminescence. The process is efficient in ZnSe:Cr, but not in ZnSe:Fe. We conclude that very efficient three-center Auger processes in ZnSe:Fe quench the anti-Stokes luminescence emission. For chromium doped samples influence of the Auger mechanism is weaker, which we explain by less efficient carrier retrapping by Cr ions. We further discuss possibility of efficient pumping of infrared Cr-related emissions via Cr photoionization transition. |
| DOI: 10.12693/APhysPolA.103.695 PACS numbers: 71.55.Gs, 78.55.Et, 76.30.Fc |