Long Decay phoaphors
US5376303A · kind A · utility
59Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1994 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Jan 10, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7797
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Long decay phosphors are disclosed that are comprised of rare-earth activated divalent, boron-substituted aluminates. In particular, the long decay phosphors are comprised of EQU MO.a(Al.sub.1-b B.sub.b).sub.2 O.sub.3 :cR, wherein PA1 0.5.ltoreq.a.ltoreq.10.0, PA1 0.0001.ltoreq.b.ltoreq.0.5 and PA1 0.0001.ltoreq.c.ltoreq.0.2, MO represents at least one divalent metal oxide selected from the group consisting of MgO, CaO, SrO and ZnO and R represents Eu and at least one additional rare earth element. Preferably, R represents Eu and at least one additional rare earth element selected from the group consisting of Pt, Nd, Dy and Tm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.