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Visible light-emission from Eu-doped ZnAl layered-double hydroxide

Title
Visible light-emission from Eu-doped ZnAl layered-double hydroxide
Authors
Cho, Deok-KiLee, Sang-SeokLim, Ji-SooBaek, Seong-HoPark, Il-Kyu
DGIST Authors
Baek, Seong-Ho
Issue Date
2017
Citation
Ceramics International, 43(13), 9686-9690
Type
Article
Article Type
Article in Press
Keywords
Electronic TransitionEu DopingEu DopingEuropiumHydrothermal GrowthPeak IntensityPhotoluminescencePhotoluminescence SpectrumVisible Light EmissionX Ray Photoelectron Spectroscopy (XPS)Zn Al Layered Double HydroxidesZn Al Layered Double Hydroxide
ISSN
0272-8842
Abstract
We report on the evolution of the emission and chemical properties of Eu-doped ZnAl-Layered double hydroxide (LDH) with variation of Eu doping concentration during the hydrothermal growth. With increasing Eu source concentration, the morphologies of the ZnAl-LDHs became denser and more closely packed while maintaining the thickness of each plate. As the Eu source concentration increased to 10wt%, specific emission from the doped Eu3+ ions was enhanced in the photoluminescence spectra. However, the peak intensity decreased when the concentration increased further to 20 and 30wt%. X-ray photoelectron spectroscopy results showed an abnormal increase of the Eu2+/Eu3+ ratio in the LDHs with increasing Eu source concentration, which suppressed the emission from the Eu3+ electronic transitions. © 2017 Elsevier Ltd and Techna Group S.r.l.
URI
http://hdl.handle.net/20.500.11750/4260
DOI
10.1016/j.ceramint.2017.04.142
Publisher
Elsevier Ltd
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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