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

Research output: Contribution to journalArticle

16 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 languageEnglish
Pages (from-to)4052-4055
Number of pages4
JournalThin Solid Films
Volume517
Issue number14
DOIs
Publication statusPublished - 2009 May 29
Externally publishedYes

Fingerprint

Plasma torches
plasma torches
Powders
Microwaves
Plasmas
microwaves
Joule heating
high temperature plasmas
flames
Photoluminescence
dissolving
Evaporation
Electric fields
evaporation
photoluminescence
X ray diffraction
Temperature
preparation
Scanning electron microscopy
scanning electron microscopy

Keywords

  • Atmospheric
  • Microwave plasma
  • YO:Eu nanophosphors

ASJC Scopus subject areas

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

Cite this

Production of nanocrystalline Y2O3 : Eu powder by microwave plasma-torch and its characterization. / Cho, Soon Cheon; Uhm, Han Sup; Bang, Chan Uk; Lee, Dong Kwon; Han, Chang-Soo.

In: Thin Solid Films, Vol. 517, No. 14, 29.05.2009, p. 4052-4055.

Research output: Contribution to journalArticle

Cho, Soon Cheon ; Uhm, Han Sup ; Bang, Chan Uk ; Lee, Dong Kwon ; Han, Chang-Soo. / Production of nanocrystalline Y2O3 : Eu powder by microwave plasma-torch and its characterization. In: Thin Solid Films. 2009 ; Vol. 517, No. 14. pp. 4052-4055.
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