Synthesis and role of co-dopants (alkaline earth divalents and halides) on the photoluminescence of Eu2+ doped BaAl2O4 phosphor

¹Department of Physics, Anna University, M.I.T Campus, Chennai, Tamil Nadu, 600 044, India

²Department of Electronic Science and Physics, Jaya College of Arts and Science, Tirunindravur, Chennai, Tamil Nadu, 602 024, India

³Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, 603 102, India

Adv. Mater. Lett., 2019, 10 (5), pp 341-345

DOI: 10.5185/amlett.2019.2218

Publication Date (Web): Jan 14, 2019

Copyright © IAAM-VBRI Press

E-mail: vps@annauniv.edu 

Abstract

Pure and Eu²⁺ doped BaAl₂O₄ phosphors have been synthesized by simple solid state reaction technique. Synthesized BaAl₂O₄ samples were studied using powder X-ray diffraction analysis (XRD), Photoluminescence spectroscopy (PL), Fourier Transform - Infra Red Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). Alkaline earth divalent (Sr, Ca, Zn, Mg) and halides (F, Cl, Br, I) were used as co-dopants to enhance the PL properties of BaAl₂O₄:Eu²⁺ phosphor. Significant impact of ionic radii of co-dopants on PL properties of the phosphor is reported.

Keywords

BaAl₂O₄, europium, alkaline earth divalent and halides, photoluminescence.