INFRARED-TO-VISIBLE CONVERSION PHOSPHOR

摘要

PROBLEM TO BE SOLVED: To provide a small particle rare earth oxide sulfide phosphor having high infrared conversion efficiency. SOLUTION: The phosphor is expressed by the general formula: (Ln1-x-yYbxEry)2O2S (wherein Ln expresses at least one element selected from Y, Gd and La; x satisfies 0.02≤x≤0.2; y satisfies 0.02≤y≤0.2) and contains 0.001-0.5 wt.% boron B. COPYRIGHT: (C)2005,JPO&NCIPI