Study of active surface centers in electroluminescent ZnS:Cu,Cl phosphors

Surface and luminescent properties of copper activated zinc sulfide phosphors were studied. It was shown that measurements of the distribution of active surface centers (DAC) provides a tool of precise study of the surface chemical composition as well as probe for surface structural defects. Correlation between phosphor synthesis and annealing conditions, donor–acceptor properties of its surface and its electroluminescent characteristics was shown