Optical analysis of RE3+ (re = Sm, Dy): MgLa2V2O9 phosphors

Abstract

In this work, we have prepared the RE3+(Sm, Dy): MgLa2V2O9 phosphors of different mol% by solid-state reaction approach. The obtained powder phosphors of RE3+(Sm, Dy): MgLa2V2O9 were analyzed by SEM, XRD, FTIR, EDAX, PL spectroscopy, and CIE chromaticity diagram of the color of different mol%. The XRD pattern of the powder phosphors exhibits the phosphor’s crystalline nature. The obtained size of prepared phosphors is around the size of 500 nm was observed by analysis of SEM. The element’s existence in the phosphors was obtained by analysis of EDAX. Functional groups were identified by FTIR analysis. From the PL analysis Sm3+: MgLa2V2O9 phosphors show intense orange-red emission at 599 nm, that is attributed to the 4G5/2→6H7/2 transition having an excitation λexci=404nm (6H5/2 → 4F7/2). It exhibits yellow emission for Dy3+: MgLa2V2O9at 574 nm having a transition of 4F9/2→6H13/2having an excitation wavelength λexci.= (6H15/2→4I15/2). The CIE diagram shows the orange and yellow emission for Sm3+: MgLa2V2O9 and Dy3+:MgLa2V2O9correspondingly. The CIE coordinates shows that the great purity of color of the phosphors powder.