New yellow-orange-red emitting phosphor Ca1-xSrx(SySe1-y):Eu2+with predicted properties for white light application

Abstract

The highly efficient red-orange-yellow emitting phosphor (Ca1-xSrx)(S1-ySey):Eu2 in combination with commercial green phosphor SrGa2S4:Eu2 and blue LED are proposed for a three-band white LED. The luminescence mechanism and optimization parameters are discussed on the basis of proposed peak wavelength diagram.