Abstract
A combination of optical spectroscopy and thermoluminescence measurements were used to determine the mechanisms that can influence the emission in SrS:Cu+ thin film structures and increase the electroluminescence brightness by a factor of 2. In particular, the interaction of the emitting center with the trap states and the conduction band is considered. Thermal quenching, thermoluminescence, and temperature-dependent fluorescence transient results are compared to appropriate population dynamics models in order to determine the position of the Cu excited state and the trap states with respect to the conduction band.
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