ThuliumV1, Main, Exploration, bibRecordById, Pascal:08-0144517

Up-conversion in nanostructured Yb3+-Tm3+co-doped sol-gel derived SiO2-LaF3 transparent glass-ceramics

Identifieur interne : 001318 ( Main/Exploration ); précédent : 001317; suivant : 001319

Up-conversion in nanostructured Yb3+-Tm3+co-doped sol-gel derived SiO2-LaF3 transparent glass-ceramics

Auteurs : J. Mendez-Ramos [Espagne] ; J. J. Velazquez [Espagne] ; A. C. Yanes [Espagne] ; J. Del-Castillo [Espagne] ; V. D. Rodriguez [Espagne]

Source :

Physica status solidi. A, Applications and materials science : (Print) [ 1862-6300 ] ; 2008.

RBID : Pascal:08-0144517

Descripteurs français

Pascal (Inist)
- Conversion fréquence, Photoluminescence, Procédé sol gel, Addition thulium, Traitement thermique, Addition ytterbium, Ségrégation, Diffraction RX, Codopage, Précipitation, Nanostructure, Silice, Fluorure de lanthane, Vitrocéramique, Verre, Nanocristal, Système binaire, Composé minéral, Système SiO2 LaF3.
Wicri :
- topic : Verre, Composé minéral.

English descriptors

KwdEn :
- Binary systems, Codoping, Frequency conversion, Glass, Glass ceramics, Heat treatments, Inorganic compounds, Lanthanum fluoride, Nanocrystal, Nanostructures, Photoluminescence, Precipitation, Segregation, Silica, Sol-gel process, Thulium additions, XRD, Ytterbium additions.

Abstract

Nanostructured transparent glass-ceramics with composition of 95SiO₂-5LaF₃ doped with 0.1 mol% of Tm³⁺ or co-doped with 0.1 mol% of Tm³⁺ and 0.3 mol% of Yb³⁺ were synthesized by thermal treatment of precursor sol-gel denved glasses. A comparative luminescence analysis in terms of different temperatures of thermal treatments has been carried out. Segregation of LaF₃ nanocrystals in matrix was confirmed by X-ray diffraction. Blue and red efficient up-conversion emissions were observed under 980 nm excitation at room temperature. These resuits indicate partition of a significant fraction of co-dopants into the precipitated LaF₃ nanocrystals. The mechanisms involved in the up-conversion emissions have been analyzed and can be ascribed to processes with two, three and four photons.

Affiliations:

Espagne

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Le document en format XML

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-Tm<sup>3+</sup>
co-doped sol-gel derived SiO<sub>2</sub>
-LaF<sub>3</sub>
 transparent glass-ceramics</title>
<author><name sortKey="Mendez Ramos, J" sort="Mendez Ramos, J" uniqKey="Mendez Ramos J" first="J." last="Mendez-Ramos">J. Mendez-Ramos</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Up-conversion in nanostructured Yb<sup>3+</sup>
-Tm<sup>3+</sup>
co-doped sol-gel derived SiO<sub>2</sub>
-LaF<sub>3</sub>
 transparent glass-ceramics</title>
<author><name sortKey="Mendez Ramos, J" sort="Mendez Ramos, J" uniqKey="Mendez Ramos J" first="J." last="Mendez-Ramos">J. Mendez-Ramos</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Departamento de Física Fundamental y Experimental, Electrónica y Sistemas, Universidad de La Laguna</s1>
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<author><name sortKey="Velazquez, J J" sort="Velazquez, J J" uniqKey="Velazquez J" first="J. J." last="Velazquez">J. J. Velazquez</name>
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<author><name sortKey="Yanes, A C" sort="Yanes, A C" uniqKey="Yanes A" first="A. C." last="Yanes">A. C. Yanes</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Departamento de Física Bâsica, Universidad de La Laguna</s1>
<s2>38206 La Laguna, Tenerife</s2>
<s3>ESP</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<country>Espagne</country>
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<author><name sortKey="Del Castillo, J" sort="Del Castillo, J" uniqKey="Del Castillo J" first="J." last="Del-Castillo">J. Del-Castillo</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Departamento de Física Bâsica, Universidad de La Laguna</s1>
<s2>38206 La Laguna, Tenerife</s2>
<s3>ESP</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<country>Espagne</country>
<wicri:noRegion>38206 La Laguna, Tenerife</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Rodriguez, V D" sort="Rodriguez, V D" uniqKey="Rodriguez V" first="V. D." last="Rodriguez">V. D. Rodriguez</name>
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<s2>38206 La Laguna, Tenerife</s2>
<s3>ESP</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
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<country>Espagne</country>
<wicri:noRegion>38206 La Laguna, Tenerife</wicri:noRegion>
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<series><title level="j" type="main">Physica status solidi. A, Applications and materials science : (Print)</title>
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<seriesStmt><title level="j" type="main">Physica status solidi. A, Applications and materials science : (Print)</title>
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<idno type="ISSN">1862-6300</idno>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Binary systems</term>
<term>Codoping</term>
<term>Frequency conversion</term>
<term>Glass</term>
<term>Glass ceramics</term>
<term>Heat treatments</term>
<term>Inorganic compounds</term>
<term>Lanthanum fluoride</term>
<term>Nanocrystal</term>
<term>Nanostructures</term>
<term>Photoluminescence</term>
<term>Precipitation</term>
<term>Segregation</term>
<term>Silica</term>
<term>Sol-gel process</term>
<term>Thulium additions</term>
<term>XRD</term>
<term>Ytterbium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Conversion fréquence</term>
<term>Photoluminescence</term>
<term>Procédé sol gel</term>
<term>Addition thulium</term>
<term>Traitement thermique</term>
<term>Addition ytterbium</term>
<term>Ségrégation</term>
<term>Diffraction RX</term>
<term>Codopage</term>
<term>Précipitation</term>
<term>Nanostructure</term>
<term>Silice</term>
<term>Fluorure de lanthane</term>
<term>Vitrocéramique</term>
<term>Verre</term>
<term>Nanocristal</term>
<term>Système binaire</term>
<term>Composé minéral</term>
<term>Système SiO2 LaF3</term>
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<term>Composé minéral</term>
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<front><div type="abstract" xml:lang="en">Nanostructured transparent glass-ceramics with composition of 95SiO<sub>2</sub>
-5LaF<sub>3</sub>
 doped with 0.1 mol% of Tm<sup>3+</sup>
 or co-doped with 0.1 mol% of Tm<sup>3+</sup>
 and 0.3 mol% of Yb<sup>3+</sup>
 were synthesized by thermal treatment of precursor sol-gel denved glasses. A comparative luminescence analysis in terms of different temperatures of thermal treatments has been carried out. Segregation of LaF<sub>3</sub>
 nanocrystals in matrix was confirmed by X-ray diffraction. Blue and red efficient up-conversion emissions were observed under 980 nm excitation at room temperature. These resuits indicate partition of a significant fraction of co-dopants into the precipitated LaF<sub>3</sub>
 nanocrystals. The mechanisms involved in the up-conversion emissions have been analyzed and can be ascribed to processes with two, three and four photons.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
</country>
</list>
<tree><country name="Espagne"><noRegion><name sortKey="Mendez Ramos, J" sort="Mendez Ramos, J" uniqKey="Mendez Ramos J" first="J." last="Mendez-Ramos">J. Mendez-Ramos</name>
</noRegion>
<name sortKey="Del Castillo, J" sort="Del Castillo, J" uniqKey="Del Castillo J" first="J." last="Del-Castillo">J. Del-Castillo</name>
<name sortKey="Rodriguez, V D" sort="Rodriguez, V D" uniqKey="Rodriguez V" first="V. D." last="Rodriguez">V. D. Rodriguez</name>
<name sortKey="Velazquez, J J" sort="Velazquez, J J" uniqKey="Velazquez J" first="J. J." last="Velazquez">J. J. Velazquez</name>
<name sortKey="Yanes, A C" sort="Yanes, A C" uniqKey="Yanes A" first="A. C." last="Yanes">A. C. Yanes</name>
</country>
</tree>
</affiliations>
</record>

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Up-conversion in nanostructured Yb3+-Tm3+co-doped sol-gel derived SiO2-LaF3 transparent glass-ceramics

Up-conversion in nanostructured Yb3+-Tm3+co-doped sol-gel derived SiO2-LaF3 transparent glass-ceramics

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri