INVESTIGATION OF STRUCTURAL, MORPHOLOGICAL AND LUMINESCENT FEATURES OF EU3+ ACTIVATED MOLYBDATE BASED PHOSPHOR FOR w-LED APPLICATIONS

Abstract

In the present work, NaBi(MoO4)2 (NBM) phosphor has been successfully synthesized by doping 1.0 mol% of Eu3+ via the conventional solid state reaction technique. The undoped & 1.0 mol% Eu3+ activated synthesized NBM phosphor sample was characterized to explore crystal structure, morphology, photoluminescence (PL) and colorimetric properties using various characterization techniques. In order to investigate the structural characteristics, x-ray diffraction was used. The standard JCPDS pattern (card no. 79-2240) was compared to the diffraction peak data. The morphological studies of the sample have been done through FE-SEM micrograph. From the photoluminescence emission spectra, It has been noted that a significant peak at 615 nm under blue excitation was achieved. The shift from the ground state to several excited states through energy absorption is illustrated in the Partial energy level diagram of Eu3+ activated NBM phosphor. Colorimetric property of 1.0 mol% of Eu3+ activated NBM phosphor has been examined and traced in the red region with high colour purity of 92.79%. The aforementioned characteristics demonstrate that the NaBi(MoO4)2: 1.0 Eu3+ phosphor has great potential in the field of w-LED applications.