Synthesis, characterization of new Bi3+ containing apatites: Formation of red emitting phosphors by Eu3+ incorporation

Meenakshi Pokhriyal, Akanksha Gupta, S. Uma

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Single phase phosphosilicates, Ca7Bi3(PO4)5(SiO4)O2, Ca6Bi4(PO4)3(SiO4)3OF and Ca8Bi2(PO4)4(SiO4)2F2 have been synthesized and characterized by powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The charge balanced stoichiometries in the present investigation derived out of cationic and anionic variations lead to the formation of apatites with high Bi3+ content. PXRD Le Bail refinements were carried out in space group P63 (No. 173) instead of P63/m. Eu3+ substitution has been carried out to append luminescence property to the lattice. Investigation of Eu3+ luminescence revealed emission features consistent with its presence in the lower symmetry (6c) and the higher symmetry (2b) sites. The CIE coordinates of the Eu3+ doped (5 mol%) apatite samples resulted in red emission.

Original languageEnglish
Pages (from-to)138-143
Number of pages6
JournalJournal of Solid State Chemistry
Volume254
DOIs
StatePublished - Oct 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Inc.

Keywords

  • Apatite
  • Bismuth
  • Luminescence
  • Phosphosilicates

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