Structural and optical characterizations of sol-gel based composites constituted of LiGdF4-Eu3+ nanocrystallites dispersed into a silica matrix

S. Lepoutre, D. Boyer, Shinobu Fujihara, R. Mahiou

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The sol-gel process was utilized for preparing fluoride-oxide composites as powders constituted of undoped or Eu3+ doped LiGdF4 nanocrystallites which are embedded in a silica network. Crystallization of the fluoride phase occurs after 700 °C heat treatment under inert atmosphere (Ar) using trifluoroacetic acid as in-situ fluorine source. Formation of well-crystallized and submicronic LiGdF4 crystallites were evidenced by X-ray diffraction and transmission electron microscopy respectively. Besides emission spectra as well as decay times of Eu3+ recorded from SiO2-LiGdF4-Eu3+ samples are similar to those obtained from single LiGdF4-Eu3+ fluoride emphasizing the formation of well-dispersed and pure fluoride nanocrystallites with a selective incorporation of Eu3+ ions inside this latter.

Original languageEnglish
Pages (from-to)2784-2788
Number of pages5
JournalJournal of Materials Chemistry
Volume19
Issue number18
DOIs
Publication statusPublished - 2009

Fingerprint

Nanocrystallites
Fluorides
Silicon Dioxide
Sol-gels
Silica
Trifluoroacetic acid
Composite materials
Fluorine
Crystallites
Sol-gel process
Crystallization
Heat treatment
Transmission electron microscopy
Powders
Trifluoroacetic Acid
X ray diffraction
Oxides
Ions

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Structural and optical characterizations of sol-gel based composites constituted of LiGdF4-Eu3+ nanocrystallites dispersed into a silica matrix. / Lepoutre, S.; Boyer, D.; Fujihara, Shinobu; Mahiou, R.

In: Journal of Materials Chemistry, Vol. 19, No. 18, 2009, p. 2784-2788.

Research output: Contribution to journalArticle

@article{da9b2a83620247229fa43803660cd904,
title = "Structural and optical characterizations of sol-gel based composites constituted of LiGdF4-Eu3+ nanocrystallites dispersed into a silica matrix",
abstract = "The sol-gel process was utilized for preparing fluoride-oxide composites as powders constituted of undoped or Eu3+ doped LiGdF4 nanocrystallites which are embedded in a silica network. Crystallization of the fluoride phase occurs after 700 °C heat treatment under inert atmosphere (Ar) using trifluoroacetic acid as in-situ fluorine source. Formation of well-crystallized and submicronic LiGdF4 crystallites were evidenced by X-ray diffraction and transmission electron microscopy respectively. Besides emission spectra as well as decay times of Eu3+ recorded from SiO2-LiGdF4-Eu3+ samples are similar to those obtained from single LiGdF4-Eu3+ fluoride emphasizing the formation of well-dispersed and pure fluoride nanocrystallites with a selective incorporation of Eu3+ ions inside this latter.",
author = "S. Lepoutre and D. Boyer and Shinobu Fujihara and R. Mahiou",
year = "2009",
doi = "10.1039/b819871c",
language = "English",
volume = "19",
pages = "2784--2788",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "Royal Society of Chemistry",
number = "18",

}

TY - JOUR

T1 - Structural and optical characterizations of sol-gel based composites constituted of LiGdF4-Eu3+ nanocrystallites dispersed into a silica matrix

AU - Lepoutre, S.

AU - Boyer, D.

AU - Fujihara, Shinobu

AU - Mahiou, R.

PY - 2009

Y1 - 2009

N2 - The sol-gel process was utilized for preparing fluoride-oxide composites as powders constituted of undoped or Eu3+ doped LiGdF4 nanocrystallites which are embedded in a silica network. Crystallization of the fluoride phase occurs after 700 °C heat treatment under inert atmosphere (Ar) using trifluoroacetic acid as in-situ fluorine source. Formation of well-crystallized and submicronic LiGdF4 crystallites were evidenced by X-ray diffraction and transmission electron microscopy respectively. Besides emission spectra as well as decay times of Eu3+ recorded from SiO2-LiGdF4-Eu3+ samples are similar to those obtained from single LiGdF4-Eu3+ fluoride emphasizing the formation of well-dispersed and pure fluoride nanocrystallites with a selective incorporation of Eu3+ ions inside this latter.

AB - The sol-gel process was utilized for preparing fluoride-oxide composites as powders constituted of undoped or Eu3+ doped LiGdF4 nanocrystallites which are embedded in a silica network. Crystallization of the fluoride phase occurs after 700 °C heat treatment under inert atmosphere (Ar) using trifluoroacetic acid as in-situ fluorine source. Formation of well-crystallized and submicronic LiGdF4 crystallites were evidenced by X-ray diffraction and transmission electron microscopy respectively. Besides emission spectra as well as decay times of Eu3+ recorded from SiO2-LiGdF4-Eu3+ samples are similar to those obtained from single LiGdF4-Eu3+ fluoride emphasizing the formation of well-dispersed and pure fluoride nanocrystallites with a selective incorporation of Eu3+ ions inside this latter.

UR - http://www.scopus.com/inward/record.url?scp=65149085860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65149085860&partnerID=8YFLogxK

U2 - 10.1039/b819871c

DO - 10.1039/b819871c

M3 - Article

AN - SCOPUS:65149085860

VL - 19

SP - 2784

EP - 2788

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 18

ER -