Sonochemical synthesis of highly luminescent Ln2O3:Eu3+ (Y, La, Gd) nanocrystals
Abstract
In this study, sonication of Ln(CH3COO)3·H2O, Eu(CH3COO)3·H2O and NaOH dissolved in the ionic liquid-butyl-3-methylimidazolium bis(trifluoromethane)sulfonylamide lead to Ln(OH)3:Eu (Ln: Gd, La, Y) nanoparticles. Subsequent calcination at 800 °C for 3 h allowed to obtain Ln2O3:Eu nanopowders. Gd2O3 and Y2O3 were obtained in the C-type lanthanide sequioxide structure, whereas La2O3 crystallized in the A-type. Structure, morphology, and luminescent properties of the nano-oxides were investigated by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), dispersive X-ray (EDX), and photoluminescence (PL). SEM studies revealed that the synthesized Gd2O3:Eu, La2O3:Eu, and Y2O3:Eu formed nano-spindle, -sheets, and -rods in shape, respectively. The nanoscale materials show very efficient red emission due to the intraconfigurational f–f transitions of Eu3+. The quantum yields for Ln2O3:Eu (5%) were determined to be 4.2% for Ln=Gd, 13.8% for Ln=Y and 5.2% for Ln=La. The asymmetric ratio I02/I01 of Eu3+ varies from 5.3 for Gd2O3, to 5.6 for Y2O3 to 6.5 for La2O3, which increased the color chromaticity.
- Authors:
-
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Univ. of Wroczlaw, Wroczaw (Poland)
- The European Patent Office, Rijswijk (The Netherlands)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1239158
- Alternate Identifier(s):
- OSTI ID: 1359349
- Report Number(s):
- IS-J-8884
Journal ID: ISSN 0022-2313; PII: S0022231315002513
- Grant/Contract Number:
- 200475; AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Luminescence
- Additional Journal Information:
- Journal Volume: 169; Journal Issue: PB; Journal ID: ISSN 0022-2313
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ceramics; inorganic compounds; nanostructures; oxides; photoluminescence spectroscopy
Citation Formats
Alammar, Tarek, Cybinska, Joanna, Campbell, Paul S., and Mudring, Anja -Verena. Sonochemical synthesis of highly luminescent Ln2O3:Eu3+ (Y, La, Gd) nanocrystals. United States: N. p., 2015.
Web. doi:10.1016/j.jlumin.2015.05.004.
Alammar, Tarek, Cybinska, Joanna, Campbell, Paul S., & Mudring, Anja -Verena. Sonochemical synthesis of highly luminescent Ln2O3:Eu3+ (Y, La, Gd) nanocrystals. United States. https://doi.org/10.1016/j.jlumin.2015.05.004
Alammar, Tarek, Cybinska, Joanna, Campbell, Paul S., and Mudring, Anja -Verena. Tue .
"Sonochemical synthesis of highly luminescent Ln2O3:Eu3+ (Y, La, Gd) nanocrystals". United States. https://doi.org/10.1016/j.jlumin.2015.05.004. https://www.osti.gov/servlets/purl/1239158.
@article{osti_1239158,
title = {Sonochemical synthesis of highly luminescent Ln2O3:Eu3+ (Y, La, Gd) nanocrystals},
author = {Alammar, Tarek and Cybinska, Joanna and Campbell, Paul S. and Mudring, Anja -Verena},
abstractNote = {In this study, sonication of Ln(CH3COO)3·H2O, Eu(CH3COO)3·H2O and NaOH dissolved in the ionic liquid-butyl-3-methylimidazolium bis(trifluoromethane)sulfonylamide lead to Ln(OH)3:Eu (Ln: Gd, La, Y) nanoparticles. Subsequent calcination at 800 °C for 3 h allowed to obtain Ln2O3:Eu nanopowders. Gd2O3 and Y2O3 were obtained in the C-type lanthanide sequioxide structure, whereas La2O3 crystallized in the A-type. Structure, morphology, and luminescent properties of the nano-oxides were investigated by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), dispersive X-ray (EDX), and photoluminescence (PL). SEM studies revealed that the synthesized Gd2O3:Eu, La2O3:Eu, and Y2O3:Eu formed nano-spindle, -sheets, and -rods in shape, respectively. The nanoscale materials show very efficient red emission due to the intraconfigurational f–f transitions of Eu3+. The quantum yields for Ln2O3:Eu (5%) were determined to be 4.2% for Ln=Gd, 13.8% for Ln=Y and 5.2% for Ln=La. The asymmetric ratio I02/I01 of Eu3+ varies from 5.3 for Gd2O3, to 5.6 for Y2O3 to 6.5 for La2O3, which increased the color chromaticity.},
doi = {10.1016/j.jlumin.2015.05.004},
journal = {Journal of Luminescence},
number = PB,
volume = 169,
place = {United States},
year = {Tue May 12 00:00:00 EDT 2015},
month = {Tue May 12 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
F-127-Assisted Sol-Gel Synthesis of Gd2O3:Eu3+ Powders and Films
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