Structural and luminescence properties of Y 2O 3

Eu 3+ core-shell nanoparticles

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Monodisperse Y 2O 3, Y 2O 3:Eu 3+ and (Y 2O 3-La 2O 3):Eu 3+ spherical nanoparticles were synthesized as well as Y 2O 3@Eu 3+, Y 2O 3@(Eu 3+, La 3+) and Au@SiO 2@Y 2O 3:Eu 3+ core-shell structured nanoparticles, using Y 2O 3 and Au@SiO 2 cores.Monodisperse spheres and shells were prepared by homogeneous precipitation method. Transmission electron microscopy confirmed that spherical particles were obtained and the samples were also measured with XPS. The optical properties of the prepared samples were investigated and compared to each other. The photoluminescence spectra show that the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles have similar emission spectra. However the emission spectra of the Y 2O 3@(Eu 3+, La 3+) and the Au@SiO 2@Y 2O 3:Eu 3+ core-shell nanoparticles differ from the other spectra. Using La 3+ ion as codopant a new emission peak emerges. Also with the use of different cores in the core-shell nanoparticles the emission spectra can be altered. 151Eu Mössbauer spectra of the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles show different Eu microenvironments and confirm the structure of these nanoparticles.

Original languageEnglish
Pages (from-to)6-13
Number of pages8
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume405
DOIs
Publication statusPublished - Jul 5 2012

Fingerprint

Luminescence
luminescence
Nanoparticles
nanoparticles
emission spectra
Photoluminescence
X ray photoelectron spectroscopy
Optical properties
Ions
Transmission electron microscopy
photoluminescence
optical properties
transmission electron microscopy
ions

Keywords

  • Core-shell structure
  • Gold core
  • Luminescence
  • Rare-earth oxide
  • Silica sphere

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

Cite this

@article{e4cbb1b32c424296a6360d36cb8f6d25,
title = "Structural and luminescence properties of Y 2O 3: Eu 3+ core-shell nanoparticles",
abstract = "Monodisperse Y 2O 3, Y 2O 3:Eu 3+ and (Y 2O 3-La 2O 3):Eu 3+ spherical nanoparticles were synthesized as well as Y 2O 3@Eu 3+, Y 2O 3@(Eu 3+, La 3+) and Au@SiO 2@Y 2O 3:Eu 3+ core-shell structured nanoparticles, using Y 2O 3 and Au@SiO 2 cores.Monodisperse spheres and shells were prepared by homogeneous precipitation method. Transmission electron microscopy confirmed that spherical particles were obtained and the samples were also measured with XPS. The optical properties of the prepared samples were investigated and compared to each other. The photoluminescence spectra show that the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles have similar emission spectra. However the emission spectra of the Y 2O 3@(Eu 3+, La 3+) and the Au@SiO 2@Y 2O 3:Eu 3+ core-shell nanoparticles differ from the other spectra. Using La 3+ ion as codopant a new emission peak emerges. Also with the use of different cores in the core-shell nanoparticles the emission spectra can be altered. 151Eu M{\"o}ssbauer spectra of the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles show different Eu microenvironments and confirm the structure of these nanoparticles.",
keywords = "Core-shell structure, Gold core, Luminescence, Rare-earth oxide, Silica sphere",
author = "G. Bohus and V. Hornok and A. Oszk{\'o} and A. V{\'e}rtes and E. Kuzmann and I. D{\'e}k{\'a}ny",
year = "2012",
month = "7",
day = "5",
doi = "10.1016/j.colsurfa.2012.04.010",
language = "English",
volume = "405",
pages = "6--13",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
issn = "0927-7757",
publisher = "Elsevier",

}

TY - JOUR

T1 - Structural and luminescence properties of Y 2O 3

T2 - Eu 3+ core-shell nanoparticles

AU - Bohus, G.

AU - Hornok, V.

AU - Oszkó, A.

AU - Vértes, A.

AU - Kuzmann, E.

AU - Dékány, I.

PY - 2012/7/5

Y1 - 2012/7/5

N2 - Monodisperse Y 2O 3, Y 2O 3:Eu 3+ and (Y 2O 3-La 2O 3):Eu 3+ spherical nanoparticles were synthesized as well as Y 2O 3@Eu 3+, Y 2O 3@(Eu 3+, La 3+) and Au@SiO 2@Y 2O 3:Eu 3+ core-shell structured nanoparticles, using Y 2O 3 and Au@SiO 2 cores.Monodisperse spheres and shells were prepared by homogeneous precipitation method. Transmission electron microscopy confirmed that spherical particles were obtained and the samples were also measured with XPS. The optical properties of the prepared samples were investigated and compared to each other. The photoluminescence spectra show that the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles have similar emission spectra. However the emission spectra of the Y 2O 3@(Eu 3+, La 3+) and the Au@SiO 2@Y 2O 3:Eu 3+ core-shell nanoparticles differ from the other spectra. Using La 3+ ion as codopant a new emission peak emerges. Also with the use of different cores in the core-shell nanoparticles the emission spectra can be altered. 151Eu Mössbauer spectra of the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles show different Eu microenvironments and confirm the structure of these nanoparticles.

AB - Monodisperse Y 2O 3, Y 2O 3:Eu 3+ and (Y 2O 3-La 2O 3):Eu 3+ spherical nanoparticles were synthesized as well as Y 2O 3@Eu 3+, Y 2O 3@(Eu 3+, La 3+) and Au@SiO 2@Y 2O 3:Eu 3+ core-shell structured nanoparticles, using Y 2O 3 and Au@SiO 2 cores.Monodisperse spheres and shells were prepared by homogeneous precipitation method. Transmission electron microscopy confirmed that spherical particles were obtained and the samples were also measured with XPS. The optical properties of the prepared samples were investigated and compared to each other. The photoluminescence spectra show that the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles have similar emission spectra. However the emission spectra of the Y 2O 3@(Eu 3+, La 3+) and the Au@SiO 2@Y 2O 3:Eu 3+ core-shell nanoparticles differ from the other spectra. Using La 3+ ion as codopant a new emission peak emerges. Also with the use of different cores in the core-shell nanoparticles the emission spectra can be altered. 151Eu Mössbauer spectra of the spherical Y 2O 3:Eu 3+ and Y 2O 3@Eu 3+ core-shell nanoparticles show different Eu microenvironments and confirm the structure of these nanoparticles.

KW - Core-shell structure

KW - Gold core

KW - Luminescence

KW - Rare-earth oxide

KW - Silica sphere

UR - http://www.scopus.com/inward/record.url?scp=84861658102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861658102&partnerID=8YFLogxK

U2 - 10.1016/j.colsurfa.2012.04.010

DO - 10.1016/j.colsurfa.2012.04.010

M3 - Article

VL - 405

SP - 6

EP - 13

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

SN - 0927-7757

ER -