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Title: 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:
 [1];  [2];  [3];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Univ. of Wroczlaw, Wroczaw (Poland)
  3. The European Patent Office, Rijswijk (The Netherlands)
Publication Date:
Research Org.:
Ames Lab., 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. https://doi.org/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 = {2015},
month = {5}
}

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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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