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1. (WO2017155111) PHOSPHOR, LIGHT-EMITTING ELEMENT, AND LIGHT-EMITTING DEVICE

Pub. No.:    WO/2017/155111    International Application No.:    PCT/JP2017/009792
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sat Mar 11 00:59:59 CET 2017
IPC: C09K 11/64
C01B 21/082
H01L 33/50
Applicants: DENKA COMPANY LIMITED
デンカ株式会社
Inventors: INOUE,Saori
井之上 紗緒梨
NOMIYAMA,Tomohiro
野見山 智宏
Title: PHOSPHOR, LIGHT-EMITTING ELEMENT, AND LIGHT-EMITTING DEVICE
Abstract:
Provided is a light-emitting device having high fluorescence intensity and minimal decrease in light-emitting efficiency even when used for a long time, and a phosphor for the same. The present invention is: an Eu-activated Li-α-sialon-based phosphor, the F content of the phosphor being 20 mass ppm or less, the total content of P and Na being 10 mass ppm or less, and the ratio of α-sialon crystals with respect to the entire crystal phase being 95 mass% or greater; and a light-emitting device provided with the phosphor.