Stable and Color-Tailorable White Light from Blue LEDs Using Color-Converting Phosphor-Glass Composites

摘要

Commercial Ce~(3+):YAG phosphors were embedded in glass frits. Thermal condition for the viscous sintering of the composite materials was optimized. The phosphor-glass composites had maximum external efficiency of 30% and maximum light extraction efficiency of 39%. Color temperatures of the composites composed of fluorescent glass frits containing Eu~(3+) and Mn~(2+) combined with blue LEDs shifted from ～7000 to ～4000 K.