Vacuum ultraviolet characteristics of nano-sized Gd 2 O 3 :Eu phosphor particles

Hyun Sook Roh, Eun Jeong Kim, Hee Sang Kang, Yun Chan Kang, Hee Dong Park, Seung Bin Park

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Nano-sized Gd 2 O 3 :Eu phosphor particles having a high photoluminescence efficiency under vacuum ultraviolet (VUV) light were prepared by ultrasonic spray pyrolysis. The introduction of organic additives such as citric acid and ethylene glycol and Na 2 CO 3 flux material in a large-scale spray pryolysis enabled the formation of Gd 2 O 3 :Eu phosphor particles with nano-size, spherical-like shape, clean surface, and non-aggregation characteristics even at high solution concentration as 1 M. To enhance the photoluminescene (PL) intensities of nano-sized Gd 2 O 3 :Eu phosphor particles under VUV light of 147 nm wavelength, the doping concentration of Eu, addition amounts of polymeric precursors and Na 2 CO 3 flux, and posttreatment temperature were optimized. The nano-sized Gd 2-x O 3 :Eu x (x = 0.1) phosphor particles prepared from solution containing 3 wt.% Na 2 CO 3 , 0.2M citric acid and 0.2M ethylene glycol and posttreated at 1150°C for 3 h showed the maximum PL intensity, which corresponded to 115% that of the commercial Y 2 O 3 :Eu product.

Original languageEnglish
Pages (from-to)2741-2745
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number5 A
Publication statusPublished - 2003 May 1
Externally publishedYes

Fingerprint

Phosphors
phosphors
Vacuum
vacuum
citric acid
Citric acid
Ethylene glycol
ultraviolet radiation
sprayers
glycols
ethylene
Fluxes
Spray pyrolysis
pyrolysis
Photoluminescence
ultrasonics
Ultrasonics
Doping (additives)
photoluminescence
Wavelength

Keywords

  • Gd O :Eu
  • Na CO
  • Nano-size
  • Phosphor
  • Photoluminescence
  • VUV

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Vacuum ultraviolet characteristics of nano-sized Gd 2 O 3 :Eu phosphor particles . / Roh, Hyun Sook; Kim, Eun Jeong; Kang, Hee Sang; Kang, Yun Chan; Park, Hee Dong; Park, Seung Bin.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 42, No. 5 A, 01.05.2003, p. 2741-2745.

Research output: Contribution to journalArticle

Roh, Hyun Sook ; Kim, Eun Jeong ; Kang, Hee Sang ; Kang, Yun Chan ; Park, Hee Dong ; Park, Seung Bin. / Vacuum ultraviolet characteristics of nano-sized Gd 2 O 3 :Eu phosphor particles In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2003 ; Vol. 42, No. 5 A. pp. 2741-2745.
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