YELLOW LIGHT EMITTING MATERIAL FOR INCREASING HALF-BAND WIDTH OF LUMINESCENT SPECTRUM, AND IMPROVING TEMPERATURE PROPERTY AND QUANTUM EFFICIENCY

摘要

PURPOSE: A yellow light emitting material is provided to have good temperature property, and to emit yellow light with the wide half-band width of luminescent spectrum and high efficiency.;CONSTITUTION: A yellow light emitting material has a composition which is represented by chemical formula 1, and has a light emitting peak within a wavelength of 500-600nm when being excited by light with a luminance peak within 250-500nm. In the chemical formula 1: M is Sr, and parts of SR can be substituted by one selected from Ba, Ca, and Mg; and x, y, z, u, and w satisfy conditions of 0x=1, 0.8=y=1.1, 2=z=3.5, u=1, 1.8=z-u, and 13=u+w=15.;COPYRIGHT KIPO 2013