Structural, Compositional and Photoluminescence Studies of Li4SrCa(SiO4)2: Eu3+ Red Phosphor Synthesized by Solid State Reaction Method

Abstract

In this paper, Eu3+ doped phosphor Li4SrCa(SiO4)2 is successfully synthesized via a solid-state reaction method at high temperatures. Structure characterization is determined using X-ray diffraction (XRD). Surface morphology was analyzed using Field emission scanning electron microscopy(FESEM). The EDX spectra confirm the elements present in Li4SrCa(SiO4)2:Eu3+ phosphor. Photoluminescence(PL) spectra of Li4SrCa(SiO4)2:Eu3+ phosphor was efficiently excited by UV range 220-450nm and under the excitation 395nm phosphors shows good intensity with an orange-red intense peak at 591nm and 619 nm was due to 4D0-7F1 and 4D0-7F2 transition respectively. Commission International del’ Eclairage (CIE) color coordinate was calculated, which confirms the Eu3+ doped phosphor with a CIE value of (x=0.6259, y=0.3737). This phosphor is considered to be a new promising orange-red emitting phosphor for WLEDs application. This phosphor may be used for solid-state lighting.