Effect of Eu 3+ doping on structural and optical properties of zirconium titanate.

Autor: Akshay S; Department of Physics, Maharani Lakshmi Ammanni College for Women, Autonomous Malleshwaram, Bengaluru 560012, Karnataka, India; Department of Physics, East West Institute of Technology, Bengaluru 560091, Karnataka, India., Vidya YS; Department of Physics, Lal Bahadur Shastri Government First Grade College, RT Nagar, Bangalore 560032, Karnataka, India. Electronic address: vidyays.phy@gmail.com., Manjunatha HC; Department of Physics, Government College for Women, Kolar 563101, Karnataka, India. Electronic address: manjunathhc@rediffmail.com., Munirathnam; Department of Physics, Government College for Women, Kolar 563101, Karnataka, India., Gurushantha K; Department of Chemistry, M S Ramaiah Institute of Technology (affiliated to Visvesvaraya Technological University, Belguam, Bengaluru 560054, Karnataka, India., Sridhar KN; Department of Physics, Government First Grade College, Kolar 563101, Karnataka, India., Prashantha SC; Department of Physics, East West Institute of Technology, Bengaluru 560091, Karnataka, India. Electronic address: scphysics@gmail.com.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2023 Nov 15; Vol. 301, pp. 123005. Date of Electronic Publication: 2023 Jun 12.
DOI: 10.1016/j.saa.2023.123005
Abstrakt: The Europium activated (1-9 mol %) Zirconium Titanate nanoparticles (NPs) have been synthesized by the green solution combustion method using Aloe Vera gel extract as a reducing agent, followed by the calcination at 720 °C for 3hrs. All the synthesized samples crystallize in a pure orthorhombic crystal structure with the space group of Pbcn. The surface and bulk morphology were analyzed. The crystallite size increases, whereas the direct energy band gap was found to decrease with an increase in dopant concentration. Further, the effect of dopant concentration on the photoluminescence properties was studied. The presence of Eu 3+ ion in the trivalent state in the host lattice was confirmed by its characteristic emission at 610 nm due to 5 D 0 → 7 F 2 (λ ex  = 464 nm). The CIE coordinates were found in the red region of the CIE 1931 diagram. The CCT coordinates lie in the range 6288-7125 K. The Judd-Ofelt parameters and derived quantities were analyzed. This theory confirms the high symmetry of Eu 3+ ions in the host lattice. These findings imply that ZTO:Eu 3+ can be employed as a nanopowder material in a red-emitting phosphor material.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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