Luminescence Properties of Europium-Doped Cerium Oxide Nanoparticles: Role of Vacancy and Oxidation States
Abbreviated Journal Title
Langmuir
Keywords
RARE-EARTH IONS; SINGLE-CRYSTAL; PHOSPHOR; SPECTRA; PHOTOLUMINESCENCE; NANOCRYSTALS; INTENSITIES; CATALYSTS; NANOCERIA; OXYGEN; Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, ; Multidisciplinary
Abstract
Enhancing the optical emission of cerium oxide nanoparticles is essential for potential biomedical I applications. In the present work, we report a simple chemical precipitation technique to synthesize europium-doped cerium oxide nanostructures to enhance the emission properties. Structural and optical properties showed all acute dependence on the concentration of oxygen ion vacancy and trivalent cerium, which, in turn, Could be modified by dopant concentration and the annealing temperature. Results from X-ray photoelectron spectroscopy showed an increase in tetravalent cerium concentration to 85% on annealing at 900 degrees C. The concentration of oxygen ion vacancy increased from 1.7 x 10(20) cm(-3) to 4.1 x 10(20) cm(-3) with the increase in dopant concentration. Maximum emission at room temperature was obtained for 15 mol % Eu-doped ceria. which improved with annealing temperature. The role of oxygen ion vacancies and trivalent cerium in modifying the emission properties is discussed.
Journal Title
Langmuir
Volume
25
Issue/Number
18
Publication Date
1-1-2009
Document Type
Article
DOI Link
Language
English
First Page
10998
Last Page
11007
WOS Identifier
ISSN
0743-7463
Recommended Citation
"Luminescence Properties of Europium-Doped Cerium Oxide Nanoparticles: Role of Vacancy and Oxidation States" (2009). Faculty Bibliography 2000s. 1755.
https://stars.library.ucf.edu/facultybib2000/1755