Spectral-kinetic characteristics of crystals and nanoceramics based on BaF2 and BaF2: Ce (original) (raw)

Physics of the Solid State, 2010

Abstract

ABSTRACT Optical characteristics of BaF2 and BaF2: Ce single crystals and nanoceramic materials prepared from these single crystals by uniaxial hot pressing have been studied. It has been shown that the introduction of Ce3+ ions into BaF2 hardly affects the ultrafast (∼0.9 ns) luminescence component. The integrated luminescence intensity of the BaF2: Ce nanoceramics is higher than that of the corresponding single crystal and considerably higher that the intensity of the undoped BaF2 crystal. It has been demonstrated that the slow (several hundred nanoseconds) component of the luminescence decay of BaF2: Ce is due to the energy transfer from excitons to Ce3+ ions.

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