Ba2+ Co-doped Zn2SiO4:Mn phosphor particles prepared by spray pyrolysis process

Yun Chan Kang, M. A. Lim, H. D. Park, M. Han

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Green-emitting Zn2SiO4:Mn phosphor particles having a spherical shape, high brightness, and short decay time were prepared by large-scale spray pyrolysis. The morphological control was attempted by using artificial colloidal solution obtained by adding the fumed silica particles to the aqueous solution. The particles prepared from the colloidal solution had a spherical and filled morphology even after post-treatment. To reduce the decay time of Zn2SiO4:Mn particles prepared by spray pyrolysis, barium was introduced as a codoping material. The effects of barium codopant concentration on the crystal structure, morphology, and luminescence properties such as luminescence intensity and decay time of Zn2SiO4:Mn particles were investigated. Zn2SiO4:Mn phosphor particles containing 0.1 mol % of barium codopant had a higher photoluminescence (PL) intensity and shorter decay time than the nonco-doped ones. The influence of post-treatment temperature on the decay time and PL intensities of Zn2SiO4:Mn particles was also investigated. The particles post-treated at 1145°C had the maximum PL intensity, which was 107% of that of the commercial product. Although the decay time of the optimized particles was similar to that of the commercial product (5.5 ms), that of prepared particles tended to be short with increasing post-treatment temperature. (Minimum decay time obtained was 4.5 ms.).

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume150
Issue number1
DOIs
Publication statusPublished - 2003 Jan 1
Externally publishedYes

Fingerprint

Spray pyrolysis
Barium
Phosphors
phosphors
pyrolysis
sprayers
Photoluminescence
Luminescence
decay
Silicon Dioxide
Luminance
barium
Crystal structure
Silica
Temperature
photoluminescence
luminescence
products
brightness
silicon dioxide

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Ba2+ Co-doped Zn2SiO4:Mn phosphor particles prepared by spray pyrolysis process. / Kang, Yun Chan; Lim, M. A.; Park, H. D.; Han, M.

In: Journal of the Electrochemical Society, Vol. 150, No. 1, 01.01.2003.

Research output: Contribution to journalArticle

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