Low-temperature crystallization of eu-doped red-emitting CaAlSiN 3 from alloy-derived ammonometallates

Jinwang Li, Tomoaki Watanabe, Hiroshi Wada, Tohru Setoyama, Masahiro Yoshimura

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)

Abstract

The synthesis of a silicon-containing quaternary nitride, CaAlSiN3, in the ammonia system under supercritical conditions was reported. An alloy with the composition of Ca0.992Eu0.008AlSi was made by melting the constituent metals (Ca >99.5%, Eu >99.0%, Al 99.999%, Si 99.999%) followed by subsequent quenching in argon. The sample was loaded in a nickel tube in a high-pressure autoclave and the synthesis was performed in 100 MPa supercritical ammonia. At 400°C, the black alloy powder changed to a white product of ammonometallates. It was extremely sensitive to moisture, releasing ammonia gas and some times sparkling when it was carefully removed from the nickel tube in air. X-ray diffraction (XRD) indicated that the ethanol- washed sample was amorphous. This synthetic route may be able to produce a variety of forms of multinary nitrides from nanostructures to large crystals.

Original languageEnglish
Pages (from-to)3592-3594
Number of pages3
JournalChemistry of Materials
Volume19
Issue number15
DOIs
Publication statusPublished - 2007 Jul 24

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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