Effects of Y/Gd ratio and boron excess on vacuum ultraviolet characteristics and morphology of (Y,Gd)BO3:Eu phosphor particles prepared by spray pyrolysis

Hye Young Koo, Dae Soo Jung, Seung Kwon Hong, Yun Chan Kang, Kyeong Youl Jung

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

(Y1-xGdx)BO3:Eu (0 ≤ x ≤ 1) phosphor particles were prepared by spray pyrolysis. The optimal amount of boric acid for the high photoluminescence intensity of there particles differed depending on the molar ratio of Y to Gd. With decreasing Y/Gd molar ratio, an increasing amount of excess boric acid was required. The difference in excess quantity of boric acid, which was demanded for the highest photoluminescence intensity according to the Y/Gd ratio, influenced the morphology and mean size of the (Y,Gd)BO3:Eu phosphor particles. The (Y1-xGd x)BO3:Eu (0 ≤ x ≤ 1) phosphor particles had a regular morphology. The mean sizes of the GdBO3:Eu and YBO 3:Eu phosphor particles were 1.4 and 1 μm, respectively. The high reactivity of boron and yttrium components produced YBO3:Eu phosphor particles with high photoluminescence intensities by spray pyrolysis using a spray solution with a stoichiometric amount of boric acid.

Original languageEnglish
Pages (from-to)3424-3427
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue number6 A
DOIs
Publication statusPublished - 2007 Jun 6
Externally publishedYes

Keywords

  • Display
  • Phosphor
  • Photoluminescence
  • Spray pyrolysis

ASJC Scopus subject areas

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

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