Phosphor and light emitting device
US8262935B2 · kind B2 · utility
1Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Jul 19, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Sep 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/73265
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor includes a composition represented by the formula: (M2x, M3y, M4z)mM1O3X(2/n), wherein M1 is Si and may include at least one element selected Ge, Ti, Zr, and Sn; M2 is Ca and may include at least one element selected Mg, Ba, and Zn; M3 is Sr and may include at least one element selected from the group consisting of Mg, Ba, and Zn; X is at least one kind of halogen element; M4 is Eu2+ and may includes at least one element rare-earth elements and Mn, wherein m is in a range of 6/6≦m≦8/6; n is in a range of 5≦n≦7; and x, y, and z satisfies x+y+z=1, where 0<x<1, 0<y<1, and 0.01≦z≦0.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.