Light-emitting device comprising porous alumina, and manufacturing process thereof
US7323815B2 · kind B2 · utility
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2References
13Claims
0Family size
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Key dates
| Filing date | Mar 17, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jan 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting device comprises a substrate, a porous alumina layer having a regular series of cavities of nanometric size containing an emitting material, and two electrodes in contact with the emitting material and connected to an electric voltage source. The first electrode comprises at least part of an aluminum film deposited onto the substrate, on which the alumina layer has been previously grown through an anodization process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.