Production of nanocrystalline Y2O3:Eu powder by microwave plasma-torch and its characterization

Soon Cheon Cho; Han Sup Uhm; Chan Uk Bang; Dong Kwon Lee; Chang Soo Han

doi:10.1016/j.tsf.2009.01.179

Production of nanocrystalline Y₂O₃:Eu powder by microwave plasma-torch and its characterization

Soon Cheon Cho
, Han Sup Uhm^*
, Chan Uk Bang
, Dong Kwon Lee
, Chang Soo Han

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Y₂O₃:Eu red-emitting nanophosphors were synthesized directly by dissolving Y₂O₃ and Eu₂O₃ in HNO₃ and by using an atmospheric microwave-plasma torch for a direct continuous preparation and for mass production of Y₂O₃:Eu powders. Atmospheric microwave plasmas produce a high-temperature plasma flame due to ohmic heating by high frequency electric fields, revealing a maximum central temperature of 6500 ± 350 K. Therefore, the synthesized Y₂O₃:Eu nanophosphors from instantaneous evaporation of dissolved Y₂O₃ and Eu₂O₃ in HNO₃ have favorable characteristics such as regular size and cubic equilibrium structure. The nanophosphors were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL).

Original language	English
Pages (from-to)	4052-4055
Number of pages	4
Journal	Thin Solid Films
Volume	517
Issue number	14
DOIs	https://doi.org/10.1016/j.tsf.2009.01.179
Publication status	Published - 2009 May 29
Externally published	Yes

Bibliographical note

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

Atmospheric
Microwave plasma
YO:Eu nanophosphors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.tsf.2009.01.179

Cite this

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title = "Production of nanocrystalline Y2O3:Eu powder by microwave plasma-torch and its characterization",

abstract = "Y2O3:Eu red-emitting nanophosphors were synthesized directly by dissolving Y2O3 and Eu2O3 in HNO3 and by using an atmospheric microwave-plasma torch for a direct continuous preparation and for mass production of Y2O3:Eu powders. Atmospheric microwave plasmas produce a high-temperature plasma flame due to ohmic heating by high frequency electric fields, revealing a maximum central temperature of 6500 ± 350 K. Therefore, the synthesized Y2O3:Eu nanophosphors from instantaneous evaporation of dissolved Y2O3 and Eu2O3 in HNO3 have favorable characteristics such as regular size and cubic equilibrium structure. The nanophosphors were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL).",

keywords = "Atmospheric, Microwave plasma, YO:Eu nanophosphors",

author = "Cho, \{Soon Cheon\} and Uhm, \{Han Sup\} and Bang, \{Chan Uk\} and Lee, \{Dong Kwon\} and Han, \{Chang Soo\}",

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T1 - Production of nanocrystalline Y2O3:Eu powder by microwave plasma-torch and its characterization

AU - Cho, Soon Cheon

AU - Uhm, Han Sup

AU - Bang, Chan Uk

AU - Lee, Dong Kwon

AU - Han, Chang Soo

PY - 2009/5/29

Y1 - 2009/5/29

N2 - Y2O3:Eu red-emitting nanophosphors were synthesized directly by dissolving Y2O3 and Eu2O3 in HNO3 and by using an atmospheric microwave-plasma torch for a direct continuous preparation and for mass production of Y2O3:Eu powders. Atmospheric microwave plasmas produce a high-temperature plasma flame due to ohmic heating by high frequency electric fields, revealing a maximum central temperature of 6500 ± 350 K. Therefore, the synthesized Y2O3:Eu nanophosphors from instantaneous evaporation of dissolved Y2O3 and Eu2O3 in HNO3 have favorable characteristics such as regular size and cubic equilibrium structure. The nanophosphors were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL).

AB - Y2O3:Eu red-emitting nanophosphors were synthesized directly by dissolving Y2O3 and Eu2O3 in HNO3 and by using an atmospheric microwave-plasma torch for a direct continuous preparation and for mass production of Y2O3:Eu powders. Atmospheric microwave plasmas produce a high-temperature plasma flame due to ohmic heating by high frequency electric fields, revealing a maximum central temperature of 6500 ± 350 K. Therefore, the synthesized Y2O3:Eu nanophosphors from instantaneous evaporation of dissolved Y2O3 and Eu2O3 in HNO3 have favorable characteristics such as regular size and cubic equilibrium structure. The nanophosphors were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL).

KW - Atmospheric

KW - Microwave plasma

KW - YO:Eu nanophosphors

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