RED PHOSPHOR HAVING GOOD COLOR PURITY

摘要

A red phosphor, a LED(Light Emitting Diode) lamp using the red phosphor, and a CCFL(Cold Cathode Fluorescent) lamp using the red phosphor are provided to improve color purity and color rendition. A red phosphor has a composition represented by Sr_(1-x-y-z) Mg_x B4O7: Sm_y Eu_z, wherein x is a number of 0-0.1; y is a number of 0.0001-0.05; and z is a number of 0.0001-0.05. Preferably x is a number of 0.01-0.05; y is a number of 0.005-0.02; and z is a number of 0.002-0.01.