Abstract
This article describes the synthesis and characterization of SrS:Te powders which were found to have two high energy emission bands under photoluminescent excitation. To understand the radiative recombination mechanism, photoluminescence emission spectra were measured as a function of temperature. A simple configuration coordinate model was used to explain the emission band broadening and luminescence quenching that was observed with increasing temperature. Luminescence decay measurements were also performed, and the empirically determined transition rates were compared to theoretical calculations. Finally, SrS:Te ACTFEL devices were fabricated and tested under electroluminescence excitation.
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