SHORT PERSISTENCE ZINC SULFIDE BLUE PHOSPHOR AND METHOD OF PREPARING SAME

摘要

A phosphor composition that emits blue color under cathode ray excitation and has a reduced decay time and a process for preparing same are disclosed. The phosphor composition comprises a predominant portion of silver-activated zinc sulfide and an effective amount of aluminum oxide. The process comprises forming a mixture comprising an effective amount of an aluminum source and a predominant portion of a silver-activated zinc sulfide composition and firing the mixture in an oxidizing atmosphere at a temperature of above about 1,700 DEG F. for a time sufficient to produce said phosphor composition.