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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 4/2018

08-11-2017

Optical properties of Eu3+ activated SrLa2O4 red-emitting phosphors for WLED applications

Authors: Rajesh Narayana Perumal, G. Subalakshmi, E. Varadarajan, S. Sadhasivam, G. Vinitha

Published in: Journal of Materials Science: Materials in Electronics | Issue 4/2018

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Abstract

The SrLa2−xO4:xEu3+ phosphors are synthesized through high-temperature solid-state reaction method at 1473 K with various doping concentration. Their phase structures, absorption spectra, and luminescence properties are investigated by X-ray diffraction (XRD), UV–Vis spectrophotometer and photoluminescence spectrometry. The intense absorption of SrLa2−xO4:xEu3+ phosphors have occurred around 400 nm. The prominent luminescence spectra of the prepared phosphors exhibited bright red emission at 626 nm. The doping concentration 0.12 mol% of Eu3+ is shown to be optimal for prominent red emission and chromaticity coordinates are x = 0.692, y = 0.3072. Considering the high colour purity and appropriate emission intensity of Eu3+ doped SrLa2O4 can be used as red phosphors for white light emitting diodes (WLEDs).
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Metadata
Title
Optical properties of Eu3+ activated SrLa2O4 red-emitting phosphors for WLED applications
Authors
Rajesh Narayana Perumal
G. Subalakshmi
E. Varadarajan
S. Sadhasivam
G. Vinitha
Publication date
08-11-2017
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 4/2018
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-017-8189-3

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