Synthesis, photoluminescence and Judd-Ofelt parameters of LiNa3P2O7:Eu3+ orthorhombic microstructures

Munirathnam, K and Dillip, GR and Raju, Deva PrasadB and Joo, SW and Dhoble, SJ and Nagabhushana, BM and Krishna, Hari R and Ramesh, KP and Perumal, Varadharaj S and Prakashbabu, D (2015) Synthesis, photoluminescence and Judd-Ofelt parameters of LiNa3P2O7:Eu3+ orthorhombic microstructures. In: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 120 (4). pp. 1615-1623.

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Abstract

We report, for the first time, the photoluminescence properties of Eu3+-doped LiNa3P2O7 phosphor, synthesized by a facile solid-state reaction method in air atmosphere. The crystal structure and phase purity of the phosphors were analyzed by X-ray diffraction analysis. Orthorhombic structural morphology was identified by scanning electron microscopy. The phosphate groups in the phosphor were confirmed by Fourier transform infrared analysis. Bandgap of the phosphor was calculated from the diffuse reflectance spectra data using Kubelka-Munk function. Under 395-nm UV excitation, the phosphors show signs of emitting red color due to the D-5(0) -> F-7(2) transition. In accordance with Judd-Ofelt theory, spectroscopic parameters such as oscillator intensity parameter Omega(t) (t = 2), spontaneous emission probabilities, fluorescence branching ratios and radiative lifetimes were calculated and analyzed for the first time in this system.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Publisher:	SPRINGER
Additional Information:	Copy right for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Sep 2015 04:13
Last Modified:	31 Oct 2018 13:59
URI:	http://eprints.iisc.ac.in/id/eprint/52310

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