Thin film multi-layered pyroelectric capacitor
US7732770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2008 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jun 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N15/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Aspects described herein provide for the design and fabrication of a device with an enhanced pyroelectric response signal comprised of multi-capacitors that are connected in series. These capacitors are fabricated using multi-layers of materials such as lead zirconate titanate (PZT), BaxSr1-xTiO3 (barium strontium titanate) and Bi4Ti3O12 (bismuth titanate) films that exhibit pyroelectric affect and belong to the class of polar materials. By controlling the poling direction of the multi-layer integrated structure, the pyroelectric voltage can be aligned in one direction, and as a result, the voltage output from the single element is the total contribution from each capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.