Polyol-mediated solvothermal synthesis and luminescence properties of CeF{sub 3}, and CeF{sub 3}:Tb{sup 3+} nanocrystals

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.11.015· OSTI ID:21494203

Qu, Xuesong ^[1]; Yang, Hyun Kyoung; Chung, Jong Won; Moon, Byung Kee; Choi, Byung Chun ^[1]; Kim, Kwang Ho ^[2]

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1. Department of Physics, Pukyong National University, Busan 608-737 (Korea, Republic of)
2. School of Materials Science and Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)

CeF{sub 3} and CeF{sub 3}:Tb{sup 3+} nanocrystals were successfully synthesized through a facile and effective polyol-mediated route with ethylene glycol (EG) as solvent. Various experimental techniques including X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and photoluminescence (PL) spectra as well as decay dynamics were used to characterize the samples. The results indicated that the content of NH{sub 4}F and reactant concentrations were key factors in the product shape and size. Excessive NH{sub 4}F was necessary for the formation of hexagonal nanoplates. The specific morphology of product can be controlled by changing the NH{sub 4}F content and reactant concentrations. In addition, Tb{sup 3+} doped-CeF{sub 3} sample shows strong green emission centered at 544 nm corresponding to the {sup 5}D{sub 4}-{sup 7}F{sub 5} transition of Tb{sup 3+}. Due to the decrease of nonradiative decay rate, the lifetime of {sup 5}D{sub 4} level of Tb{sup 3+} become longer gradually upon increasing the size of product. -- Graphical abstract: 0D nanoparticles and 2D nanoplates CeF{sub 3} and CeF{sub 3}:Tb{sup 3+} have been successfully fabricated through a facile polyol process. Display Omitted Research highlights: {yields} 0D nanoparticles and 2D nanoplates CeF{sub 3} were fabricated by polyol process. {yields} Morphology of product depends on the content of NH{sub 4}F and reactant concentrations. {yields} CeF{sub 3}:Tb{sup 3+} shows strong green emission via Ce{sup 3+}-Tb{sup 3+} energy transfer route. {yields} Decay process of {sup 5}D{sub 4} level of Tb{sup 3+} tends to slower increasing the size of products.

• OSTI ID: 21494203
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 2; Other Information: DOI: 10.1016/j.jssc.2010.11.015; PII: S0022-4596(10)00521-9; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMMONIUM FLUORIDES
CERIUM FLUORIDES
CERIUM IONS
DOPED MATERIALS
GLYCOLS
MORPHOLOGY
NANOSTRUCTURES
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SOLVENTS
SPECTRA
SYNTHESIS
TERBIUM IONS
X-RAY DIFFRACTION
ALCOHOLS
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CERIUM COMPOUNDS
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
ELECTRON MICROSCOPY
EMISSION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
IONS
LUMINESCENCE
MATERIALS
MICROSCOPY
ORGANIC COMPOUNDS
PHOTON EMISSION
RARE EARTH COMPOUNDS
SCATTERING