PittsburghV1, France, Analysis, bibRecord, 000466

A Postsynthetic Modification of II-VI Semiconductor Nanoparticles to Create Tb3+ and Eu3+ Luminophores

Identifieur interne : 000466 ( France/Analysis ); précédent : 000465; suivant : 000467

A Postsynthetic Modification of II-VI Semiconductor Nanoparticles to Create Tb3+ and Eu3+ Luminophores

Auteurs : Prasun Mukherjee [États-Unis] ; Robin F. Sloan [États-Unis] ; Chad M. Shade [États-Unis] ; David H. Waldeck [États-Unis] ; Stéphane Petoud [États-Unis, France]

Source :

Journal of physical chemistry. C [ 1932-7447 ] ; 2013.

RBID : Pascal:13-0312410

Descripteurs français

Pascal (Inist)
- Semiconducteur II-VI, Nanoparticule, Nanomatériau, Lanthanide, Propriété électronique, Luminescence, Propriété optique, Dispositif affichage, Addition zinc, Dopage, Répartition spatiale, 8107, 7820.
Wicri :
- topic : Dopage.

English descriptors

KwdEn :
- Display devices, Doping, Electronic properties, II-VI semiconductors, Luminescence, Nanoparticles, Nanostructured materials, Optical properties, Rare earths, Spatial distribution, Zinc additions.

Abstract

We describe a novel method for creating luminescent lanthanide-containing nanoparticles in which the lanthanide cations are sensitized by the semiconductor nanoparticle's electronic excitation. In contrast to previous strategies, this new approach creates such materials by addition of external salt to a solution of fully formed nanoparticles. We demonstrate this postsynthetic modification for the lanthanide luminescence sensitization of two visible emitting lanthanides (Ln), Tb³⁺ and Eu³⁺ ions, through ZnS nanoparticles in which the cations were added postsynthetically as external Ln(NO₃)₃.xH₂O salt to solutions of ZnS nanoparticles. The postsynthetically treated ZnS nanoparticle systems display Tb³⁺ and Eu³⁺ luminescence intensities that are comparable to those of doped Zn(Ln)S nanoparticles, which we reported previously (J. Phys. Chem. A, 2011, 115, 4031-4041). A comparison with the synthetically doped systems is used to contrast the spatial distribution of the lanthanide ions, bulk versus surface localized. The postsynthetic strategy described in this work is fundamentally different from the synthetic incorporation (doping) approach and offers a rapid and less synthetically demanding protocol for Tb³⁺:ZnS and Eu³⁺:ZnS luminophores, thereby facilitating their use in a broad range of applications.

Affiliations:

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Pascal:13-0312410

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Display devices</term>
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<term>Nanoparticles</term>
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<term>Luminescence</term>
<term>Propriété optique</term>
<term>Dispositif affichage</term>
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<term>Répartition spatiale</term>
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<front><div type="abstract" xml:lang="en">We describe a novel method for creating luminescent lanthanide-containing nanoparticles in which the lanthanide cations are sensitized by the semiconductor nanoparticle's electronic excitation. In contrast to previous strategies, this new approach creates such materials by addition of external salt to a solution of fully formed nanoparticles. We demonstrate this postsynthetic modification for the lanthanide luminescence sensitization of two visible emitting lanthanides (Ln), Tb<sup>3+</sup>
 and Eu<sup>3+</sup>
 ions, through ZnS nanoparticles in which the cations were added postsynthetically as external Ln(NO<sub>3</sub>
)<sub>3</sub>
.xH<sub>2</sub>
O salt to solutions of ZnS nanoparticles. The postsynthetically treated ZnS nanoparticle systems display Tb<sup>3+</sup>
 and Eu<sup>3+</sup>
 luminescence intensities that are comparable to those of doped Zn(Ln)S nanoparticles, which we reported previously (J. Phys. Chem. A, 2011, 115, 4031-4041). A comparison with the synthetically doped systems is used to contrast the spatial distribution of the lanthanide ions, bulk versus surface localized. The postsynthetic strategy described in this work is fundamentally different from the synthetic incorporation (doping) approach and offers a rapid and less synthetically demanding protocol for Tb<sup>3+</sup>
:ZnS and Eu<sup>3+</sup>
:ZnS luminophores, thereby facilitating their use in a broad range of applications.</div>
</front>
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<name sortKey="Petoud, Stephane" sort="Petoud, Stephane" uniqKey="Petoud S" first="Stéphane" last="Petoud">Stéphane Petoud</name>
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<country name="France"><region name="Centre-Val de Loire"><name sortKey="Petoud, Stephane" sort="Petoud, Stephane" uniqKey="Petoud S" first="Stéphane" last="Petoud">Stéphane Petoud</name>
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A Postsynthetic Modification of II-VI Semiconductor Nanoparticles to Create Tb3+ and Eu3+ Luminophores

A Postsynthetic Modification of II-VI Semiconductor Nanoparticles to Create Tb3+ and Eu3+ Luminophores

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri