Methods for producing coated phosphors and host material particles using atomic layer deposition methods
US8637156B2 · kind B2 · utility
11Cited by
6References
9Claims
0Family size
Inventors
Key dates
| Filing date | Apr 23, 2012 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Apr 23, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Layers of a passivating material and/or containing luminescent centers are deposited on phosphor particles or particles that contain a host material that is capable of capturing an excitation energy and transferring it to a luminescent center or layer. The layers are formed in an ALD process. The ALD process permits the formation of very thin layers. Coated phosphors have good resistance to ambient moisture and oxygen, and/or can be designed to emit a distribution of desired light wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.