Synthesis of (Ca1-xSrx)4Si2O7F2oxyfluoride solid solutions and their photoluminescence properties activated by Eu2+ions

Jihong Min, Hideki Kato, Makoto Kobayashi, Yasushi Sato, Masato Kakihana

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1 Citation (Scopus)


The synthesis of oxyfluoride solid solutions with the composition (Ca1-xSrx)4Si2O7F2is reported in this study. (Ca1-xSrx)4Si2O7F2is found to form a solid solution within the entire composition range. Synthesis of Sr4Si2O7F2, which is the first compound in the SrSiOF system, can be regarded as one of the interesting results of this study. The Eu2+-activated (Ca1-xSrx)4Si2O7F2solid solutions, except for Sr4Si2O7F2exhibited photoluminescence under excitation at 300450nm at room temperature. The samples with x = 0.250.75 showed a broad red emission band with a peak around 630 nm, whereas the Ca4Si2O7F2:Eu2+(x = 0) showed blue emission with a peak at 470 nm. Thus, the substitution of Sr for Ca in Ca4SiO7F2:Eu2+changed the photoluminescence properties remarkably.

Original languageEnglish
Pages (from-to)630-633
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1428
Publication statusPublished - 2014 Aug 1


  • Oxyfluoride
  • Phosphor
  • Red emission
  • Solid solution
  • SrSiOF


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