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Luminescent mechanisms of ZnS:Cu:Cl and ZnS:Cu:Al phosphors

Y.Y. Chen, J.G. Duh, B.S. Chiou, C.G. Peng in Thin Solid Films vol. 392(1) by Elsevier BV
ISSNS: 0040-6090
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Abstract

Al phosphors are fabricated by a flux fusion method to be used in cathode ray tube CRT monitors for green emission. The emission spectra of the phosphors depend on the Cu concentration. A series of luminescence measurements have been conducted, and several models are applied to explain the luminescent phenomenon of these phosphors. It is revealed that ZnS:Cu:Cl and the ZnS:Cu:Al phosphors exhibit green emission yet their luminescence mechanisms are different. The emission spectrum from the as-fabricated green phosphors is not a typical Gaussian distribution. The combination of blue and green band luminescence is attributed to the green-luminescence quenching derived from the interstitial Cu q ions.