A facile synthesis and photoluminescent properties of redispersible CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles

Z. L. Wang; Z. W. Quan; P. Y. Jia; C. K. Lin; Y. Luo; Y. Chen; J. Fang; W. Zhou; C. J. O'Connor; J. Lin

doi:10.1021/cm052360x

A facile synthesis and photoluminescent properties of redispersible CeF ₃, CeF ₃:Tb ³⁺, and CeF ₃:Tb ³⁺/LaF ₃ (core/shell) nanoparticles

Z. L. Wang
, Z. W. Quan
, P. Y. Jia
, C. K. Lin
, Y. Luo
, Y. Chen
, J. Fang
, W. Zhou
, C. J. O'Connor
, J. Lin

Chemistry

Binghamton University

CAS - Changchun Institute of Applied Chemistry
University of Chinese Academy of Sciences
University of New Orleans

Research output: Contribution to journal › Article › peer-review

368 Scopus citations

Abstract

CeF ₃, CeF ₃:Tb ³⁺, and CeF ₃:Tb ³⁺/LaF ₃ (core/shell) nanoparticles were prepared by the polyol method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), UV - vis absorption spectra, photoluminescence (PL) spectra, and lifetimes. The results of XRD indicate that the obtained CeF ₃, CeF ₃:Tb ³⁺, and CeF ₃:Tb ³⁺/LaF ₃ (core/shell) nanoparticles crystallized well at 200°C in diethylene glycol (DEG) with a hexagonal structure. The TEM images illustrate that the CeF ₃ and CeF ₃:Tb ³⁺ nanoparticles are spherical with a mean diameter of 7 nm. The growth of the LaF ₃ shell around the CeF ₃:Tb ³⁺ core nanoparticles resulted in an increase of the average size (11 nm) of the nanopaticles as well as in a broadening of their size distribution. These nanocrystals can be well-dispersed in ethanol to form clear colloidal solutions. The colloidal solutions of CeF ₃ and CeF ₃:Tb ³⁺ show the characteristic emission of Ce ³⁺ 5d-4f (320 nm) and Tb ³⁺ ⁵D ₄- ⁷F _J (J = 6-3, with ⁵D ₄- ⁷F ₅ green emission at 542 nm as the strongest one) transitions, respectively. The emission intensity and lifetime of the CeF ₃:Tb ³⁺/LaF ₃ (core/shell) nanoparticles increased with respect to those of CeF ₃:Tb ³⁺ core particles. This indicates that a significant amount of nonradiative centers existing on the surface of CeF ₃:Tb ³⁺ nanoparticles can be eliminated by the shielding effect of LaF ₃ shells. Finally, the energy transfer from Ce ³⁺ to Tb ³⁺ was investigated in CeF ₃:Tb ³⁺ nanoparticles in detail.

Original language	English
Pages (from-to)	2030-2037
Number of pages	8
Journal	Chemistry of Materials
Volume	18
Issue number	8
DOIs	https://doi.org/10.1021/cm052360x
State	Published - Apr 18 2006

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10.1021/cm052360x

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@article{0558a30ba7134a248c9b784b27f1c5a1,

title = "A facile synthesis and photoluminescent properties of redispersible CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles",

abstract = "CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles were prepared by the polyol method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), UV - vis absorption spectra, photoluminescence (PL) spectra, and lifetimes. The results of XRD indicate that the obtained CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles crystallized well at 200°C in diethylene glycol (DEG) with a hexagonal structure. The TEM images illustrate that the CeF 3 and CeF 3:Tb 3+ nanoparticles are spherical with a mean diameter of 7 nm. The growth of the LaF 3 shell around the CeF 3:Tb 3+ core nanoparticles resulted in an increase of the average size (11 nm) of the nanopaticles as well as in a broadening of their size distribution. These nanocrystals can be well-dispersed in ethanol to form clear colloidal solutions. The colloidal solutions of CeF 3 and CeF 3:Tb 3+ show the characteristic emission of Ce 3+ 5d-4f (320 nm) and Tb 3+ 5D 4- 7F J (J = 6-3, with 5D 4- 7F 5 green emission at 542 nm as the strongest one) transitions, respectively. The emission intensity and lifetime of the CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles increased with respect to those of CeF 3:Tb 3+ core particles. This indicates that a significant amount of nonradiative centers existing on the surface of CeF 3:Tb 3+ nanoparticles can be eliminated by the shielding effect of LaF 3 shells. Finally, the energy transfer from Ce 3+ to Tb 3+ was investigated in CeF 3:Tb 3+ nanoparticles in detail.",

author = "Wang, \{Z. L.\} and Quan, \{Z. W.\} and Jia, \{P. Y.\} and Lin, \{C. K.\} and Y. Luo and Y. Chen and J. Fang and W. Zhou and O'Connor, \{C. J.\} and J. Lin",

year = "2006",

month = apr,

day = "18",

doi = "10.1021/cm052360x",

language = "English",

volume = "18",

pages = "2030--2037",

journal = "Chemistry of Materials",

issn = "0897-4756",

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}

TY - JOUR

T1 - A facile synthesis and photoluminescent properties of redispersible CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles

AU - Wang, Z. L.

AU - Quan, Z. W.

AU - Jia, P. Y.

AU - Lin, C. K.

AU - Luo, Y.

AU - Chen, Y.

AU - Fang, J.

AU - Zhou, W.

AU - O'Connor, C. J.

AU - Lin, J.

PY - 2006/4/18

Y1 - 2006/4/18

N2 - CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles were prepared by the polyol method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), UV - vis absorption spectra, photoluminescence (PL) spectra, and lifetimes. The results of XRD indicate that the obtained CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles crystallized well at 200°C in diethylene glycol (DEG) with a hexagonal structure. The TEM images illustrate that the CeF 3 and CeF 3:Tb 3+ nanoparticles are spherical with a mean diameter of 7 nm. The growth of the LaF 3 shell around the CeF 3:Tb 3+ core nanoparticles resulted in an increase of the average size (11 nm) of the nanopaticles as well as in a broadening of their size distribution. These nanocrystals can be well-dispersed in ethanol to form clear colloidal solutions. The colloidal solutions of CeF 3 and CeF 3:Tb 3+ show the characteristic emission of Ce 3+ 5d-4f (320 nm) and Tb 3+ 5D 4- 7F J (J = 6-3, with 5D 4- 7F 5 green emission at 542 nm as the strongest one) transitions, respectively. The emission intensity and lifetime of the CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles increased with respect to those of CeF 3:Tb 3+ core particles. This indicates that a significant amount of nonradiative centers existing on the surface of CeF 3:Tb 3+ nanoparticles can be eliminated by the shielding effect of LaF 3 shells. Finally, the energy transfer from Ce 3+ to Tb 3+ was investigated in CeF 3:Tb 3+ nanoparticles in detail.

AB - CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles were prepared by the polyol method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), UV - vis absorption spectra, photoluminescence (PL) spectra, and lifetimes. The results of XRD indicate that the obtained CeF 3, CeF 3:Tb 3+, and CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles crystallized well at 200°C in diethylene glycol (DEG) with a hexagonal structure. The TEM images illustrate that the CeF 3 and CeF 3:Tb 3+ nanoparticles are spherical with a mean diameter of 7 nm. The growth of the LaF 3 shell around the CeF 3:Tb 3+ core nanoparticles resulted in an increase of the average size (11 nm) of the nanopaticles as well as in a broadening of their size distribution. These nanocrystals can be well-dispersed in ethanol to form clear colloidal solutions. The colloidal solutions of CeF 3 and CeF 3:Tb 3+ show the characteristic emission of Ce 3+ 5d-4f (320 nm) and Tb 3+ 5D 4- 7F J (J = 6-3, with 5D 4- 7F 5 green emission at 542 nm as the strongest one) transitions, respectively. The emission intensity and lifetime of the CeF 3:Tb 3+/LaF 3 (core/shell) nanoparticles increased with respect to those of CeF 3:Tb 3+ core particles. This indicates that a significant amount of nonradiative centers existing on the surface of CeF 3:Tb 3+ nanoparticles can be eliminated by the shielding effect of LaF 3 shells. Finally, the energy transfer from Ce 3+ to Tb 3+ was investigated in CeF 3:Tb 3+ nanoparticles in detail.

UR - https://www.scopus.com/pages/publications/33646466533

U2 - 10.1021/cm052360x

DO - 10.1021/cm052360x

M3 - Article

SN - 0897-4756

VL - 18

SP - 2030

EP - 2037

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 8

ER -

A facile synthesis and photoluminescent properties of redispersible CeF ₃, CeF ₃:Tb ³⁺, and CeF ₃:Tb ³⁺/LaF ₃ (core/shell) nanoparticles

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