Morphology control of Gd2O3:Eu phosphor particles with cubic and monoclinic phases prepared by high-temperature spray pyrolysis

Hye Young Koo, Seo Hee Ju, Dae Soo Jung, Seung Kwon Hong, Do Youp Kim, Yun Chan Kang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Gd2O3:Eu phosphor particles with cubic and monoclinic phases were directly prepared by high-temperature spray pyrolysis from aqueous, polymeric precursor and colloidal solutions. The colloidal solution with nanosized silica was effective for the preparation of Gd 2O3:Eu phosphor particles with a cubic phase, a high photoluminescence intensity and a good morphology. The phosphor particles prepared from colloidal solutions with nanosized silica obtained by hydrolysis had a small size, a narrow size distribution, a spherical shape and a filled morphology. The optimum doping concentration of nanosized silica particles was 0.5 wt % of the product particles. The phosphor particles prepared by spray pyrolysis from colloidal solutions at temperatures below 1580°C had the photoluminescence spectrra of the cubic phase and a maximum photoluminescence intensity at a temperature of 1560°C.

Original languageEnglish
Pages (from-to)5018-5022
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number6 A
DOIs
Publication statusPublished - 2006 Jun 28
Externally publishedYes

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Keywords

  • Phosphor
  • Photoluminescence
  • Spray pyrolysis

ASJC Scopus subject areas

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

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