Abstract
The broad-band “blue emission” (BE) characteristic of ZnS electroluminescence (EL) is studied. Time-resolved behaviour of BE, Mn emission and conduction current are compared. Time-averaged BE measurements are also reported, to provide a direct probe of the contribution of the dielectric layers to the power dissipation in the EL structure. Also, a comparative study of the respective efficiencies of the electrons injected into ZnS for BE and Mn excitations was carried out for various field values in ZnS, which yields new information on the energy distribution of the hot electrons.
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