Method for preparing copper-aluminum-gold-activated zinc-sulfide phosphors
US4316816A · kind A · utility
1Cited by
5References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 6, 1978 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Dec 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/642
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for preparing a phosphor including heating at its reaction temperature in a covered container a mixture of zinc sulfide, an activator quantity of copper as a compound thereof, an activator quantity of aluminum as a compound thereof, an activator quantity of gold as a compound thereof, a minor proportion of elemental selenium, a minor proportion of elemental sulfur and a minor proportion of carbon. The reaction mixture is heated in the container and the product is then cooled. After cooling, whatever carbon remains is removed as by screening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.