Abstract
A series of (ZnCd)S: Ag: Cl phosphors have been studied to determine the effect of increased CdS content on the forbidden gap and on the energy of the ground states associated with luminescence. This work is correlated with that of other workers to confirm the presence of two separate ground states and to show that the luminescence of this material may be adequately explained by the Klasens model. Also the uniform translation of the spectral peaks (while retaining their shape) emphasizes the long-range order aspects of these phosphors.
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