Preparation of CaMgSi2O6:Eu blue phosphor particles by spray pyrolysis and its VUV characteristics

Kyeong Youl Jung, Kook Hyun Han, Yun Chan Kang, Ha Kyun Jung

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Spray pyrolysis was applied to prepare CaMgSi2O6:Eu (CMS) blue phosphor particles with high luminescence intensity. The VUV characteristics of CMS particles were optimized in terms of post-treatment temperature, Eu2+ concentration and Si content when they were prepared by spray pyrolysis. The luminescence intensity of CMS particles was gradually increased with increasing the post-treatment temperature as long as the melting does not occur. The concentration quenching was observed when the concentration of Eu2+ was 1.0 at.%. Also, a red shift in the emission spectrum occurred at the Eu2+ concentration of higher than 1.5 at.% due to some increase in the crystal filed around Eu2+. Using excess Si was not helpful to improve the photoluminescence intensity of CMS particles when they are prepared by the spray pyrolysis. It was clear that the CMS particles prepared by spray pyrolysis had better thermal stability compared with commercial BAM particles. The emission intensity of the optimized CMS particles was about 97% of BAM particles after the baking at 500 °C although the width of the spectrum was smaller.

Original languageEnglish
Pages (from-to)330-336
Number of pages7
JournalMaterials Chemistry and Physics
Volume98
Issue number2-3
DOIs
Publication statusPublished - 2006 Aug 1
Externally publishedYes

Fingerprint

Spray pyrolysis
Phosphors
phosphors
pyrolysis
sprayers
preparation
Luminescence
Quenching
Photoluminescence
Melting
Thermodynamic stability
luminescence
Temperature
Crystals
baking
red shift
emission spectra
thermal stability
quenching
melting

Keywords

  • CaMgSiO:Eu
  • Phosphor
  • Photoluminescence
  • Spray pyrolysis

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Preparation of CaMgSi2O6:Eu blue phosphor particles by spray pyrolysis and its VUV characteristics. / Jung, Kyeong Youl; Han, Kook Hyun; Kang, Yun Chan; Jung, Ha Kyun.

In: Materials Chemistry and Physics, Vol. 98, No. 2-3, 01.08.2006, p. 330-336.

Research output: Contribution to journalArticle

Jung, Kyeong Youl ; Han, Kook Hyun ; Kang, Yun Chan ; Jung, Ha Kyun. / Preparation of CaMgSi2O6:Eu blue phosphor particles by spray pyrolysis and its VUV characteristics. In: Materials Chemistry and Physics. 2006 ; Vol. 98, No. 2-3. pp. 330-336.
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