Large-scale production of fine-sized Zn2SiO4:Mn phosphor microspheres with a dense structure and good photoluminescence properties by a spray-drying process

Jung Sang Cho, Su Min Lee, Kyeong Youl Jung, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

In this work, a spray-drying method was used to prepare densely structured Zn2SiO4:Mn phosphor particles. Several organic materials such as citric acid, sucrose, and dextrin were examined as additives to control the particle morphology. Consequently, dextrin was found to be the most effective organic additive for obtaining dense precursor powders after the drying process. After the heat-treatment process, the dextrin-assisted precursor particles were turned into dense spherically shaped particles with a mean particle size of 1.3 μm and the high crystallinity of a pure Zn2SiO4 phase. The luminescence properties were changed by changing the types of organic additives. The phosphor particles with the smallest surface area and the powder with the largest crystallite size showed the highest luminescence intensity. Finally, the dense spherical particles obtained from the spray solution containing dextrin had an emission intensity corresponding to 176% that of the phosphor powders prepared from the solution without the organic additive. This journal is

Original languageEnglish
Pages (from-to)43606-43611
Number of pages6
JournalRSC Advances
Volume4
Issue number82
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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