Near-infrared to visible upconversion in Tm3+ and Yb3+ codoped Lu2O3 nanocrystals synthesized by hydrothermal method.
Identifieur interne : 000278 ( Main/Merge ); précédent : 000277; suivant : 000279Near-infrared to visible upconversion in Tm3+ and Yb3+ codoped Lu2O3 nanocrystals synthesized by hydrothermal method.
Auteurs : Li Li ; Xingli Zhang ; Xiantao Wei ; Guangchuan Wang ; Changxin GuoSource :
- Journal of nanoscience and nanotechnology [ 1533-4880 ] ; 2014.
Descripteurs français
- KwdFr :
- Conformation moléculaire, Cristallisation (), Eau (), Lutétium (), Nanostructures (), Nanostructures (ultrastructure), Oxydes (synthèse chimique), Propriétés de surface, Rayons infrarouges, Structures macromoléculaires (), Taille de particule, Température élevée, Test de matériaux, Thulium (), Ytterbium ().
- MESH :
English descriptors
- KwdEn :
- Crystallization (methods), Hot Temperature, Infrared Rays, Lutetium (chemistry), Macromolecular Substances (chemistry), Materials Testing, Molecular Conformation, Nanostructures (chemistry), Nanostructures (ultrastructure), Oxides (chemical synthesis), Particle Size, Surface Properties, Thulium (chemistry), Water (chemistry), Ytterbium (chemistry).
- MESH :
- chemical , chemical synthesis : Oxides.
- chemical , chemistry : Lutetium, Macromolecular Substances, Thulium, Water, Ytterbium.
- chemistry : Nanostructures.
- methods : Crystallization.
- ultrastructure : Nanostructures.
- Hot Temperature, Infrared Rays, Materials Testing, Molecular Conformation, Particle Size, Surface Properties.
Abstract
Lutetium oxide nanocrystals codoped with Tm3+ and Yb3+ have been successfully synthesized via adjusting the pH values of the precursor solution in a hydrothermal method followed by a subsequent calcination process. The samples were systematically characterized by X-ray diffraction, field-emission scanning microscopy, Fourier transform infrared transmittance spectroscopy, and upconversion luminescent spectra. The experimental results show that the pH values of the precursor solution have great effects on the structural, morphological, and upconversion luminescent properties of Lu2O3:2%Yb3+, 0.2%Tm3+ nanocrystals. The as-formed lutetium oxide precursors could transform to cubic Lu2O3 with the same morphology and a slight shrinkage in size after a calcination process. The upconversion emission intensity of Lu2O3:2%Yb3+, 0.2%Tm3+ nanocrystals obtained from the precursor solution with pH = 9 is the strongest. The enhancement of the upconversion luminescence is suggested to be the consequence of reducing the number of OH- groups and the enlarged nanocrystals size. Strong blue and weak red emissions from the prepared nanocrystals were observed under 980 nm laser excitation, which were attributed to the 1G4 --> 3H6 and 1G4 --> 3F4 transitions of Tm3+ ion, respectively.
PubMed: 24738389
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Near-infrared to visible upconversion in Tm3+ and Yb3+ codoped Lu2O3 nanocrystals synthesized by hydrothermal method.</title><author><name sortKey="Li, Li" sort="Li, Li" uniqKey="Li L" first="Li" last="Li">Li Li</name></author><author><name sortKey="Zhang, Xingli" sort="Zhang, Xingli" uniqKey="Zhang X" first="Xingli" last="Zhang">Xingli Zhang</name></author><author><name sortKey="Wei, Xiantao" sort="Wei, Xiantao" uniqKey="Wei X" first="Xiantao" last="Wei">Xiantao Wei</name></author><author><name sortKey="Wang, Guangchuan" sort="Wang, Guangchuan" uniqKey="Wang G" first="Guangchuan" last="Wang">Guangchuan Wang</name></author><author><name sortKey="Guo, Changxin" sort="Guo, Changxin" uniqKey="Guo C" first="Changxin" last="Guo">Changxin Guo</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24738389</idno><idno type="pmid">24738389</idno><idno type="wicri:Area/PubMed/Corpus">000183</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000183</idno><idno type="wicri:Area/PubMed/Curation">000183</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000183</idno><idno type="wicri:Area/PubMed/Checkpoint">000183</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000183</idno><idno type="wicri:Area/Ncbi/Merge">000831</idno><idno type="wicri:Area/Ncbi/Curation">000831</idno><idno type="wicri:Area/Ncbi/Checkpoint">000831</idno><idno type="wicri:doubleKey">1533-4880:2014:Li L:near:infrared:to</idno><idno type="wicri:Area/Main/Merge">000278</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Near-infrared to visible upconversion in Tm3+ and Yb3+ codoped Lu2O3 nanocrystals synthesized by hydrothermal method.</title><author><name sortKey="Li, Li" sort="Li, Li" uniqKey="Li L" first="Li" last="Li">Li Li</name></author><author><name sortKey="Zhang, Xingli" sort="Zhang, Xingli" uniqKey="Zhang X" first="Xingli" last="Zhang">Xingli Zhang</name></author><author><name sortKey="Wei, Xiantao" sort="Wei, Xiantao" uniqKey="Wei X" first="Xiantao" last="Wei">Xiantao Wei</name></author><author><name sortKey="Wang, Guangchuan" sort="Wang, Guangchuan" uniqKey="Wang G" first="Guangchuan" last="Wang">Guangchuan Wang</name></author><author><name sortKey="Guo, Changxin" sort="Guo, Changxin" uniqKey="Guo C" first="Changxin" last="Guo">Changxin Guo</name></author></analytic><series><title level="j">Journal of nanoscience and nanotechnology</title><idno type="ISSN">1533-4880</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Crystallization (methods)</term><term>Hot Temperature</term><term>Infrared Rays</term><term>Lutetium (chemistry)</term><term>Macromolecular Substances (chemistry)</term><term>Materials Testing</term><term>Molecular Conformation</term><term>Nanostructures (chemistry)</term><term>Nanostructures (ultrastructure)</term><term>Oxides (chemical synthesis)</term><term>Particle Size</term><term>Surface Properties</term><term>Thulium (chemistry)</term><term>Water (chemistry)</term><term>Ytterbium (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Conformation moléculaire</term><term>Cristallisation ()</term><term>Eau ()</term><term>Lutétium ()</term><term>Nanostructures ()</term><term>Nanostructures (ultrastructure)</term><term>Oxydes (synthèse chimique)</term><term>Propriétés de surface</term><term>Rayons infrarouges</term><term>Structures macromoléculaires ()</term><term>Taille de particule</term><term>Température élevée</term><term>Test de matériaux</term><term>Thulium ()</term><term>Ytterbium ()</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Oxides</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Lutetium</term><term>Macromolecular Substances</term><term>Thulium</term><term>Water</term><term>Ytterbium</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanostructures</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Crystallization</term></keywords><keywords scheme="MESH" qualifier="synthèse chimique" xml:lang="fr"><term>Oxydes</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Nanostructures</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Hot Temperature</term><term>Infrared Rays</term><term>Materials Testing</term><term>Molecular Conformation</term><term>Particle Size</term><term>Surface Properties</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Conformation moléculaire</term><term>Cristallisation</term><term>Eau</term><term>Lutétium</term><term>Nanostructures</term><term>Propriétés de surface</term><term>Rayons infrarouges</term><term>Structures macromoléculaires</term><term>Taille de particule</term><term>Température élevée</term><term>Test de matériaux</term><term>Thulium</term><term>Ytterbium</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Lutetium oxide nanocrystals codoped with Tm3+ and Yb3+ have been successfully synthesized via adjusting the pH values of the precursor solution in a hydrothermal method followed by a subsequent calcination process. The samples were systematically characterized by X-ray diffraction, field-emission scanning microscopy, Fourier transform infrared transmittance spectroscopy, and upconversion luminescent spectra. The experimental results show that the pH values of the precursor solution have great effects on the structural, morphological, and upconversion luminescent properties of Lu2O3:2%Yb3+, 0.2%Tm3+ nanocrystals. The as-formed lutetium oxide precursors could transform to cubic Lu2O3 with the same morphology and a slight shrinkage in size after a calcination process. The upconversion emission intensity of Lu2O3:2%Yb3+, 0.2%Tm3+ nanocrystals obtained from the precursor solution with pH = 9 is the strongest. The enhancement of the upconversion luminescence is suggested to be the consequence of reducing the number of OH- groups and the enlarged nanocrystals size. Strong blue and weak red emissions from the prepared nanocrystals were observed under 980 nm laser excitation, which were attributed to the 1G4 --> 3H6 and 1G4 --> 3F4 transitions of Tm3+ ion, respectively.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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