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Photoluminescent properties of nanostructured Y2O 3:Eu3+ powders obtained through aerosol synthesis

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2010
Authors
Marinković, Katarina
Mančić, Lidija
Gómez, Luz Stella
Rabanal, Maria Eugenia
Dramićanin, Miroslav
Milošević, Olivera
Article (Published version)
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Abstract
Red emitting Y2O3:Eu3+ (5 and 10 at.%) submicronic particles were synthesized through ultrasonic spray pyrolysis method from the pure nitrate solutions at 900 °C. The employed synthesis conditions (gradual increase of temperature within triple zone reactor and extended residence time) assured formation of spherical, dense, non-agglomerated particles that are nanostructured (crystallite size ∼20 nm). The as-prepared powders were additionally thermally treated at temperatures up to 1200 °C. A bcc Ia-3 cubic phase presence and exceptional powder morphological features were maintained with heating and are followed with particle structural changes (crystallite growth up to 130 nm). Emission spectra were studied after excitation with 393 nm wavelength and together with the decay lifetimes for Eu3+ ion 5D0 and 5D1 levels revealed the effect of powder nanocrystalline nature on its luminescent properties. The emission spectra showed typical Eu3+ 5D0 → 7Fi (i = 0, 1, 2, 3, 4) transitions with do...minant red emission at 611 nm, while the lifetime measurements revealed the quenching effect with the rise of dopant concentration and its more consistent distribution into host lattice due to the thermal treatment. © 2010 Elsevier B.V. All rights reserved.

Keywords:
luminescence / spray pyrolysis / yttrium oxide / nanoparticles
Source:
Optical Materials, 2010, 32, 12, 1606-1611
Publisher:
  • Elsevier
Projects:
  • MPNS COST Action 539 - Electroceramics from Nanopowders Produced by Innovative Methods (ELENA)
  • Synthesis, characterization and activity of organic and coordination composition and their application in (bio) nanotechnology (RS-142010)

DOI: 10.1016/j.optmat.2010.05.023

ISSN: 0925-3467

WoS: 000283971200011

Scopus: 2-s2.0-77957277022
[ Google Scholar ]
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25
URI
http://dais.sanu.ac.rs/123456789/3414
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

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