Patent ID: 9590150
Date: 2017-03-07
CPC Classifications: C09K,F21K,F21Y,H01L

Claim:
1. A light-emitting device comprising: a first SiC fluorescent portion in which a donor impurity and an acceptor impurity are added and which is formed of a SiC crystal; a second SiC fluorescent portion which is formed of a SiC crystal in which the same donor impurity as the first SiC fluorescent portion and the same acceptor impurity as the first SiC fluorescent portion are added, and in which a concentration of the acceptor impurity is higher than the concentration of the acceptor impurity in the first SiC fluorescent portion and an emission wavelength is longer than that of the first SiC fluorescent portion; and a light-emitting portion that emits excitation light that excites the first SiC fluorescent portion and the second SiC fluorescent portion, wherein the first SiC fluorescent portion and the second SiC fluorescent portion are formed of a SiC crystal in which carbon atoms are disposed in a cubic site and a hexagonal site and are configured such that a ratio of a donor impurity substituting a carbon atom at a cubic site to a donor impurity substituting a carbon atom at a hexagonal site is larger than a ratio of the cubic site to the hexagonal site in a crystal structure.