New Rare-Earth Containing (Sr1 - yEuy)2 Al2Si10N14O4 Phosphors for Light-Emitting Diodes

Remarkable progress was made in the development of white-light-emitting diodes (LEDs). White LEDs provided a light element having a semiconductor InGaN light-emitting chip (blue or UV LEDs) and luminescent phosphors. Here we reported the sialon s-phase of (Sr, Eu)2 Al2Si10N14O4. Eu2+ activator ions that were substituted for the strontium site represented a new type of yellow-green phosphor that could be excited by blue LEDs used for application in the fabrication of white LEDs.