Influence of amorphous and crystalline type precursor intermediates on the morphology and luminescence properties of green emitting β-Ca 2SiO4:Eu2+ phosphor synthesized using a liquid phase precursor method

Deok Su Jo, Jihae Kim, Karupannan Senthil, Hoo Jeong Lee, Ho Kyoon Chung, Masato Kakihana, Toda Kenji, Takaki Masaki, Dae Ho Yoon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Influence of precursor intermediates (PI) on the synthesis of high efficient green emitting β-Ca2SiO4:Eu2+ (β-C2S:Eu) phosphors were demonstrated by a novel liquid-phase-precursor (LPP) method utilizing (a) CaCl2-EuCl 3, (b) Ca(NO3)2-EuCl3, (c) CaCl 2-Eu(NO3)3, and (d) Ca(NO3) 2-Eu(NO3)3 combinations as precursors. The crystallinity and morphology of the PI analyzed using X-ray diffraction and high-resolution transmission electron microscopy measurements showed both the amorphous and crystalline type precursor intermediates (API and CPI) depending upon the metal-source materials. The final morphology and luminescence properties of β-C2S:Eu phosphors were found to be strongly influenced by the crystallinity (amorphous and crystalline) and morphology of the PIs. The APIs have led to regular-shaped homogeneous phosphor particles with higher luminescence when compared with the CPIs.

Original languageEnglish
Pages (from-to)311-317
Number of pages7
JournalJournal of Alloys and Compounds
Volume608
DOIs
Publication statusPublished - 2014 Sep 25

Keywords

  • Amorphous precursor intermediate
  • Crystalline precursor intermediate
  • Liquid phase precursor
  • Phosphor

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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