FLUORESCENT SUBSTANCE WITH HIGH ABSORPTION EFFICIENCY, A PROCESS FOR PRODUCING THE FLUORESCENT SUBSTANCE, A LIGHT-EMITTING DEVICE AND A LIGHT-EMITTING MODULE

摘要

PURPOSE: A fluorescent substance is provided to improve chromaticity compared with a conventional Sr-containing red fluoroscent substance and to ensure high absorption efficiency enough to improve emission efficiency.;CONSTITUTION: A fluorescent substance is prepared by preparing a mixture and burning the mixture, wherein the mixture comprises: a compound including a tetravalent metal element M^1; a compound including trivalent metal element M^2 excluding In(III) and Ga(III); a compound including the metal element M excluding M^1, M^2, In(III) and Ga(III); a compound containing an emission central element EC; and a compound including metal element L selected from In(III) and Ga(III).;COPYRIGHT KIPO 2012