Identification of Eu oxidation states in a doped Sr5(PO4)3F phosphor by TOF-SIMS imaging

H. C. Swart, I. M. Nagpure, O. M. Ntwaeaborwa, G. L. Fisher, J. J. Terblans

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


An Eu-doped Sr5(PO4)3F phosphor with a hexagonal apatite structure was prepared by a urea assisted combustion method. There was evidence of the reduction of Eu3+to Eu2+based upon the photoluminescence data. This was confirmed with X-ray photoelectron spectroscopy. Normally it is very difficult to distinguish between two oxidation states with time-offlight secondary ion mass spectrometry (TOF-SIMS), but it is shown that the parallel detection capability of the technique allows full molecular and isotopic characterization of the matrix chemistry. The two states were detected by the EuF+ and EuF2 + species, ostensibly the Eu(II) and Eu(III) oxidation states, respectively.

Original languageEnglish
Pages (from-to)17119-17125
Number of pages7
JournalOptics Express
Issue number15
Publication statusPublished - 16 Jul 2012
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Identification of Eu oxidation states in a doped Sr5(PO4)3F phosphor by TOF-SIMS imaging'. Together they form a unique fingerprint.

Cite this