Patent ID: 8734681
Filing Date: 2014-05-27
Classification: C09K,C23C,H01L,Y02E

Abstract:
1. A luminescent material having the formula: wherein the luminescent material is polycrystalline; A is included in the luminescent material as a monovalent cation; X, X′, and X″ are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x′, and x″ is in the range of 1 to 5; and at least X′ is iodine, such that x′/(x+x′+x″)≧⅕, wherein the luminescent material includes a dopant selected from at least one of O