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

Deok Ki Cho; Sang Seok Lee; Ji Soo Lim; Seong Ho Baek; Il Kyu Park

doi:10.1016/j.ceramint.2017.04.142

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

Deok Ki Cho, Sang Seok Lee, Ji Soo Lim, Seong Ho Baek, Il Kyu Park

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

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 10 wt%, 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 30 wt%. 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.

Original language	English
Pages (from-to)	9686-9690
Number of pages	5
Journal	Ceramics International
Volume	43
Issue number	13
DOIs	https://doi.org/10.1016/j.ceramint.2017.04.142
State	Published - 2017

Keywords

Eu-doping
Hydrothermal growth
Photoluminescence
ZnAl layered double hydroxide

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10.1016/j.ceramint.2017.04.142

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title = "Visible light-emission from Eu-doped ZnAl layered-double hydroxide",

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 10 wt\%, 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 30 wt\%. 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.",

keywords = "Eu-doping, Hydrothermal growth, Photoluminescence, ZnAl layered double hydroxide",

author = "Cho, \{Deok Ki\} and Lee, \{Sang Seok\} and Lim, \{Ji Soo\} and Baek, \{Seong Ho\} and Park, \{Il Kyu\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

year = "2017",

doi = "10.1016/j.ceramint.2017.04.142",

language = "English",

volume = "43",

pages = "9686--9690",

journal = "Ceramics International",

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TY - JOUR

T1 - Visible light-emission from Eu-doped ZnAl layered-double hydroxide

AU - Cho, Deok Ki

AU - Lee, Sang Seok

AU - Lim, Ji Soo

AU - Baek, Seong Ho

AU - Park, Il Kyu

PY - 2017

Y1 - 2017

N2 - 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 10 wt%, 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 30 wt%. 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.

AB - 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 10 wt%, 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 30 wt%. 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.

KW - Eu-doping

KW - Hydrothermal growth

KW - Photoluminescence

KW - ZnAl layered double hydroxide

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DO - 10.1016/j.ceramint.2017.04.142

M3 - Article

AN - SCOPUS:85018166932

SN - 0272-8842

VL - 43

SP - 9686

EP - 9690

JO - Ceramics International

JF - Ceramics International

IS - 13

ER -

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

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Keywords

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