White upconversion emission in Yb3+/Tm3+/Ho3+ doped SrMoO4 nanocrystals by high excited state energy transfer
Identifieur interne : 000612 ( Main/Exploration ); précédent : 000611; suivant : 000613White upconversion emission in Yb3+/Tm3+/Ho3+ doped SrMoO4 nanocrystals by high excited state energy transfer
Auteurs : DONGYULI [République populaire de Chine] ; YUXIAOWANG [République populaire de Chine] ; XUERUZHANG [République populaire de Chine] ; GUANGSHI [République populaire de Chine] ; GANG LIU [République populaire de Chine] ; YINGLIN SONG [République populaire de Chine]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2013.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Dopage.
English descriptors
- KwdEn :
Abstract
The SrMoO4:Yb3+/Tm3+/Ho3+ nanocrystals have been successfully synthesized via a sol-gel process. Under 976 nm laser diode excitation, the nanocrystals show the intense white upconversion (UC) emission, which is composed of the blue (1G4 → 3H6 of Tm3+), green (5F4/5S2 → 5I8 of Ho3+), and red (5F5 → 5I8 of Ho3+) UC emissions. The UC mechanisms based on spectral, kinetic, and pump power dependence analyses were discussed. It indicates that the white UC emission is attributed to the high excited state energy transfer from the sensitizer Yb3+-MoO42- dimer to the activators (Tm3+ and Ho3+), which can partly decrease the non-radiative processes at the lower energy levels of the activators.
Affiliations:
Links toward previous steps (curation, corpus...)
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Le document en format XML
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/Tm<sup>3+</sup>
/Ho<sup>3+</sup>
doped SrMoO<sub>4</sub>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">White upconversion emission in Yb<sup>3+</sup>
/Tm<sup>3+</sup>
/Ho<sup>3+</sup>
doped SrMoO<sub>4</sub>
nanocrystals by high excited state energy transfer</title>
<author><name sortKey="Dongyuli" sort="Dongyuli" uniqKey="Dongyuli" last="Dongyuli">DONGYULI</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Harbin Institute of Technology, No. 92 West Da-Zhi Street</s1>
<s2>Harbin 150001</s2>
<s3>CHN</s3>
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<country>République populaire de Chine</country>
<wicri:noRegion>Harbin 150001</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>School of Physics, Zhanjiang Normal College</s1>
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<country>République populaire de Chine</country>
<wicri:noRegion>Zhanjiang 524048</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Yuxiaowang" sort="Yuxiaowang" uniqKey="Yuxiaowang" last="Yuxiaowang">YUXIAOWANG</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Harbin Institute of Technology, No. 92 West Da-Zhi Street</s1>
<s2>Harbin 150001</s2>
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<author><name sortKey="Xueruzhang" sort="Xueruzhang" uniqKey="Xueruzhang" last="Xueruzhang">XUERUZHANG</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Harbin Institute of Technology, No. 92 West Da-Zhi Street</s1>
<s2>Harbin 150001</s2>
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<author><name sortKey="Guangshi" sort="Guangshi" uniqKey="Guangshi" last="Guangshi">GUANGSHI</name>
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<author><name sortKey="Gang Liu" sort="Gang Liu" uniqKey="Gang Liu" last="Gang Liu">GANG LIU</name>
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<author><name sortKey="Yinglin Song" sort="Yinglin Song" uniqKey="Yinglin Song" last="Yinglin Song">YINGLIN SONG</name>
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<s2>Harbin 150001</s2>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
<idno type="ISSN">0925-8388</idno>
<imprint><date when="2013">2013</date>
</imprint>
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<seriesStmt><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
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</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chromaticity</term>
<term>Doping</term>
<term>Energy transfer</term>
<term>Excited states</term>
<term>Frequency conversion</term>
<term>Holmium additions</term>
<term>Luminescence decay</term>
<term>Nanocrystal</term>
<term>Photoluminescence</term>
<term>Sol-gel process</term>
<term>Strontium Molybdates</term>
<term>Thulium additions</term>
<term>Ytterbium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Dopage</term>
<term>Etat excité</term>
<term>Conversion fréquence</term>
<term>Transfert énergie</term>
<term>Procédé sol gel</term>
<term>Chromaticité</term>
<term>Déclin luminescence</term>
<term>Addition ytterbium</term>
<term>Addition thulium</term>
<term>Addition holmium</term>
<term>Strontium Molybdate</term>
<term>Nanocristal</term>
<term>SrMoO4</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Dopage</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The SrMoO<sub>4</sub>
:Yb<sup>3+</sup>
/Tm<sup>3+</sup>
/Ho<sup>3+</sup>
nanocrystals have been successfully synthesized via a sol-gel process. Under 976 nm laser diode excitation, the nanocrystals show the intense white upconversion (UC) emission, which is composed of the blue (<sup>1</sup>
G<sub>4</sub>
→ <sup>3</sup>
H<sub>6</sub>
of Tm<sup>3+</sup>
), green (<sup>5</sup>
F<sub>4</sub>
/<sup>5</sup>
S<sub>2</sub>
→ <sup>5</sup>
I<sub>8</sub>
of Ho<sup>3+</sup>
), and red (<sup>5</sup>
F<sub>5</sub>
→ <sup>5</sup>
I<sub>8</sub>
of Ho<sup>3+</sup>
) UC emissions. The UC mechanisms based on spectral, kinetic, and pump power dependence analyses were discussed. It indicates that the white UC emission is attributed to the high excited state energy transfer from the sensitizer Yb<sup>3+</sup>
-MoO<sub>4</sub>
<sup>2-</sup>
dimer to the activators (Tm<sup>3+</sup>
and Ho<sup>3+</sup>
), which can partly decrease the non-radiative processes at the lower energy levels of the activators.</div>
</front>
</TEI>
<affiliations><list><country><li>République populaire de Chine</li>
</country>
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<tree><country name="République populaire de Chine"><noRegion><name sortKey="Dongyuli" sort="Dongyuli" uniqKey="Dongyuli" last="Dongyuli">DONGYULI</name>
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<name sortKey="Dongyuli" sort="Dongyuli" uniqKey="Dongyuli" last="Dongyuli">DONGYULI</name>
<name sortKey="Gang Liu" sort="Gang Liu" uniqKey="Gang Liu" last="Gang Liu">GANG LIU</name>
<name sortKey="Guangshi" sort="Guangshi" uniqKey="Guangshi" last="Guangshi">GUANGSHI</name>
<name sortKey="Xueruzhang" sort="Xueruzhang" uniqKey="Xueruzhang" last="Xueruzhang">XUERUZHANG</name>
<name sortKey="Yinglin Song" sort="Yinglin Song" uniqKey="Yinglin Song" last="Yinglin Song">YINGLIN SONG</name>
<name sortKey="Yuxiaowang" sort="Yuxiaowang" uniqKey="Yuxiaowang" last="Yuxiaowang">YUXIAOWANG</name>
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