Novel Synthesis Technique for Zinc-Silicate Phosphors

Abstract

A novel but simple synthesis technique for producing improved zinc-silicate phosphors with improved efficiency and persistence control as well as tight and uniform particle-size distribution is described. Silicic acid powder with a predetermined range of particle sizes is first coated with a solution containing manganese and arsenic ions and very fine zinc-oxide powder (100 A) and then fired in a wet nitrogen furnace at 1180 +/-50 C for 15+/^–5 minutes. This method eliminates grinding and produces P1-and P39-type phosphors with cathodoluminescence performance superior to commercial samples. © 1983 IEEE