Phosphor and light-emitting device
US9337399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2014 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Oct 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor has the general formula (M2x,M3y,M4z)mM1O3X(2/n), wherein M1 represents at least one element including at least Si and selected from the group consisting of Si, Ge, Ti, Zr, and Sn, M2 represents at least one element including at least Ca and selected from the group consisting of Ca, Mg, Cd, Co, and Zn, M3 represents at least one element including at least Sr and selected from the group consisting of Sr, Ra, Ba, and Pb, X represents at least one halogen element, M4 represents at least one element including at least Eu2+ and selected from the group consisting of rare-earth elements and Mn, m is in the range 1≦m≦4/3, n is in the range 5≦n≦7, and x, y, and z are each in such a range as to satisfy x+y+z=1, 0.45≦x≦0.8, 0.05≦y≦0.45, and 0.45, and 0.03≦z≦0.35.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.