Protective coating for metalhydride based devices
US8085463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2007 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Nov 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thin film device includes an active layer (4), wherein the active layer has optical properties that change by adding and removing hydrogen, and includes a Mg-transition metal layer, or rare earth based layer, the active layer being provided on one side with a protective layer (3) that is hydrogen, oxygen and water vapor permeable and liquid water impermeable, and has hydrophobic surface properties. The thin film can further include a Pd catalyst layer (5) disposed between the active layer (4) and the protective layer (3). The thin film device can be used in a switchable mirror wherein the optical properties of the mirror can be changed by adding/removing hydrogen to/from the active layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.