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Commensurately modulated structure and luminescent properties of Na3Pr(PO4)2

  • Dan Zhao
  • , Fa Xue Ma
  • , Pei Gao Duan
  • , Cong Kui Nie
  • , Jian Feng Guo
  • , Rui Juan Zhang
  • Henan Polytechnic University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Sodium praseodymium orthophosphate Na3Pr(PO4)2 was prepared using high temperature molten salt method and structurally characterized by single-crystal X-ray diffraction (SC-XRD) analysis. Its structure can be modeled as a four-dimensional (4D) commensurately modulated structure with orthorhombic superspace group Pca21(0 1/3 0)000 or as a conventional 3D superstructure description. The structure contains PrO8, NaO6, NaO7 and PO4 polyhedra, which are in six types of linear array along the a-axis. Furthermore, the excitation and emission spectra, decay time and Commission International de l’Éclairage (CIE) chromaticity index of Na3Pr(PO4)2 were studied. Under blue light excitation (468 nm), the powdered Na3Pr(PO4)2 calcined at 1200 °C shows the strongest red emission at around 610 nm, which originates from the 3P0→3H6 and 1D2→3H4 transformations of Pr3+ ion.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalJournal of Luminescence
Volume192
DOIs
StatePublished - Dec 2017
Externally publishedYes

Keywords

  • Crystal structure
  • Optical properties
  • Rare earth alloys and compounds
  • X-ray diffraction

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