Yellow fluorescent substance, light-emitting device, illumination device, and vehicle
US9416313B2 · kind B2 · utility
1Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/321
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an oxynitride silicate fluorescent substance capable of output a light having a high luminance even when irradiated by an exciting light having a high energy density. The present invention is a yellow fluorescent substance represented by a chemical formula (Ba1-x-y-z,Srx)aSibOcNd:Eu2+y,Y3+z (0.9≦a≦1.1, 1.9≦b≦2.1, 1.9≦c≦2.1, 1.9≦d≦2.1, 0≦x≦1, 0<y<0.01, and 0≦z<0.01).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.