Electroluminescent ZnS:Mn phosphor and method of making
US8557143B2 · kind B2 · utility
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15References
7Claims
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Key dates
| Filing date | Mar 11, 2009 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Feb 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroluminescent phosphor comprising ZnS:Mn is disclosed. Also disclosed are ZnS:Mn electroluminescent phosphors that are free of or substantially free of copper, and/or wherein the phosphor has a D50 size of less than about 5 μm. In addition, a method for preparing a ZnS:Mn phosphor is disclosed, comprising the steps of contacting at least a portion of each of a first solution comprising a Zn2+ compound, a manganese source, and a second solution comprising a S2− source agent; and then heating the mixture at a temperature and for a time sufficient to form a phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.