ThuliumV1, Main, Exploration, bibRecord, 000496

Highly uniform and monodisperse GdOF:Ln3+ (Ln = Eu, Tb, Tm, Dy, Ho, Sm) microspheres: hydrothermal synthesis and tunable-luminescence properties.

Identifieur interne : 000496 ( Main/Exploration ); précédent : 000495; suivant : 000497

Highly uniform and monodisperse GdOF:Ln3+ (Ln = Eu, Tb, Tm, Dy, Ho, Sm) microspheres: hydrothermal synthesis and tunable-luminescence properties.

Auteurs : Yang Zhang [République populaire de Chine] ; Xiaojiao Kang ; Dongling Geng ; Mengmeng Shang ; Yuan Wu ; Xuejiao Li ; Hongzhou Lian ; Ziyong Cheng ; Jun Lin

Source :

Dalton transactions (Cambridge, England : 2003) [ 1477-9234 ] ; 2013.

RBID : pubmed:23942823

Descripteurs français

KwdFr :
- Citrates (), Dysprosium (), Europium (), Gadolinium (), Holmium (), Lanthanides (), Mesures de luminescence, Microsphères, Rayons ultraviolets, Samarium (), Terbium (), Thulium ().
MESH :
- Citrates, Dysprosium, Europium, Gadolinium, Holmium, Lanthanides, Mesures de luminescence, Microsphères, Rayons ultraviolets, Samarium, Terbium, Thulium.

English descriptors

KwdEn :
- Citrates (chemistry), Dysprosium (chemistry), Europium (chemistry), Gadolinium (chemistry), Holmium (chemistry), Lanthanoid Series Elements (chemistry), Luminescent Measurements, Microspheres, Samarium (chemistry), Terbium (chemistry), Thulium (chemistry), Ultraviolet Rays.
MESH :
- chemical , chemistry : Citrates, Dysprosium, Europium, Gadolinium, Holmium, Lanthanoid Series Elements, Samarium, Terbium, Thulium.
- Luminescent Measurements, Microspheres, Ultraviolet Rays.

Abstract

GdOF:Ln(3+) (Ln = Eu, Tb, Tm, Dy, Ho and Sm) microspheres (1.5 μm) with high uniformity and monodispersity have been synthesized via a facile hydrothermal method followed by heat treatment (600 °C). X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), as well as photoluminescence (PL) and cathodoluminescence (CL) spectra are used to characterize the resulting samples. A series of controlled experiments indicate that sodium citrate (Cit(3-)) as a shape modifier introduced into the reaction system plays a critical role in the shape evolution of the final products. Furthermore, the shape and size of the products can be further manipulated by adjusting the dosage of Cit(3-) and pH values in the initial solution. The possible formation mechanism for these microspheres has been presented. Under UV light and low-voltage electron beam excitation, GdOF:Ln(3+) microspheres show the characteristic f-f transitions of Ln(3+) (Eu, Tb/Ho, Tm, Dy and Sm) ions and give bright red, green, blue, yellow and yellowish-orange emission, respectively. In addition, multicolored luminescence containing white emission have been successfully confected for co-doped GdOF:Ln(3+) phosphors by changing the doped Ln(3+) ions and adjusting their doping concentrations due to the simultaneous luminescence of Ln(3+) in the GdOF host, making these materials have potential applications in field-emission display devices.

DOI: 10.1039/c3dt51576a
PubMed: 23942823

Affiliations:

République populaire de Chine

Le document en format XML

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<term>Gadolinium (chemistry)</term>
<term>Holmium (chemistry)</term>
<term>Lanthanoid Series Elements (chemistry)</term>
<term>Luminescent Measurements</term>
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<term>Gadolinium</term>
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<term>Lanthanides</term>
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<front><div type="abstract" xml:lang="en">GdOF:Ln(3+) (Ln = Eu, Tb, Tm, Dy, Ho and Sm) microspheres (1.5 μm) with high uniformity and monodispersity have been synthesized via a facile hydrothermal method followed by heat treatment (600 °C). X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), as well as photoluminescence (PL) and cathodoluminescence (CL) spectra are used to characterize the resulting samples. A series of controlled experiments indicate that sodium citrate (Cit(3-)) as a shape modifier introduced into the reaction system plays a critical role in the shape evolution of the final products. Furthermore, the shape and size of the products can be further manipulated by adjusting the dosage of Cit(3-) and pH values in the initial solution. The possible formation mechanism for these microspheres has been presented. Under UV light and low-voltage electron beam excitation, GdOF:Ln(3+) microspheres show the characteristic f-f transitions of Ln(3+) (Eu, Tb/Ho, Tm, Dy and Sm) ions and give bright red, green, blue, yellow and yellowish-orange emission, respectively. In addition, multicolored luminescence containing white emission have been successfully confected for co-doped GdOF:Ln(3+) phosphors by changing the doped Ln(3+) ions and adjusting their doping concentrations due to the simultaneous luminescence of Ln(3+) in the GdOF host, making these materials have potential applications in field-emission display devices.</div>
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<name sortKey="Kang, Xiaojiao" sort="Kang, Xiaojiao" uniqKey="Kang X" first="Xiaojiao" last="Kang">Xiaojiao Kang</name>
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<name sortKey="Lin, Jun" sort="Lin, Jun" uniqKey="Lin J" first="Jun" last="Lin">Jun Lin</name>
<name sortKey="Shang, Mengmeng" sort="Shang, Mengmeng" uniqKey="Shang M" first="Mengmeng" last="Shang">Mengmeng Shang</name>
<name sortKey="Wu, Yuan" sort="Wu, Yuan" uniqKey="Wu Y" first="Yuan" last="Wu">Yuan Wu</name>
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Highly uniform and monodisperse GdOF:Ln3+ (Ln = Eu, Tb, Tm, Dy, Ho, Sm) microspheres: hydrothermal synthesis and tunable-luminescence properties.

Highly uniform and monodisperse GdOF:Ln3+ (Ln = Eu, Tb, Tm, Dy, Ho, Sm) microspheres: hydrothermal synthesis and tunable-luminescence properties.

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

Pour générer des pages wiki

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