Structural, optical and electrical properties of GdAlO3:Eu3+Ba2

Effect of Ba2+ ions concentration on the photoluminescence of GdAlO3:Eu3+ Ba2+ phosphor is investigated. The phosphors are synthesized by citrate-based sol-gel method and the formation of orthorhombic phase GdAlO3 is confirmed by XRD analysis. Kubelka-Munk function is used to estimate the band gap a...

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Bibliographic Details
Main Authors: Selvalakshmi, T, Tamilarasi, S, Chandra, Bose A
Format: Conference Proceeding
Language:English
Subjects:
Aluminates
Dielectric properties
Dielectric strength
Electrical properties
Emission spectra
Europium
Gadolinium compounds
Optical properties
Orthorhombic phase
Phosphors
Photoluminescence
Sol-gel processes
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Summary:Effect of Ba2+ ions concentration on the photoluminescence of GdAlO3:Eu3+ Ba2+ phosphor is investigated. The phosphors are synthesized by citrate-based sol-gel method and the formation of orthorhombic phase GdAlO3 is confirmed by XRD analysis. Kubelka-Munk function is used to estimate the band gap and the value varies with concentration of Ba2+ is observed. Photoluminescence spectra show a strong red emission peak at 616 nm corresponding to5D0→7F2 transition and its intensity increase with the addition of Ba2+ ions. The presence of Eu3+ and Ba2+ ions in GdAlO3 strongly influences the dielectric property of GdAlO3.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4917708