• Patent Title: NITRIDE FLUORESCENT MATERIAL, METHOD OF PRODUCING NITRIDE FLUORESCENT MATERIAL AND LIGHT EMITTING DEVICE
  • Application No.: US16779642
    Application Date: 2020-02-02
  • Publication No.: US20200172805A1
    Publication Date: 2020-06-04
  • Inventor: Hiroyuki WATANABEShoji HOSOKAWA
  • Applicant: NICHIA CORPORATION
  • Applicant Address: JP Anan-shi
  • Assignee: NICHIA CORPORATION
  • Current Assignee: NICHIA CORPORATION
  • Current Assignee Address: JP Anan-shi
  • Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@50f4bf24 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6490fb1
  • Main IPC: C09K11/77
  • IPC: C09K11/77 H01L33/50 C09K11/08
NITRIDE FLUORESCENT MATERIAL, METHOD OF PRODUCING NITRIDE FLUORESCENT MATERIAL AND LIGHT EMITTING DEVICE
Abstract:
Provided is a method of producing a nitride fluorescent material containing silicon nitride particles containing Eu, at least one alkaline earth metal selected from the group consisting of Mg, Ca, Sr, and Ba, Al, and fluorine in a composition of the silicon nitride particles. The method includes heat treating a raw material mixture containing an Eu source, a source of the alkaline earth metal, an Al source, an Si source, and an alkaline earth metal fluoride containing at least one selected from the group consisting of Mg, Ca, Sr, and Ba, wherein a molar content ratio of fluorine atom to Al is from 0.02 to 0.3.
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