Piezoelectrically enhanced photocathode
US7592747B1 · kind B1 · utility
2Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Dec 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photocathode, for generating electrons in response to incident photons in a photodetector, includes a base layer having a first lattice structure and an active layer having a second lattice structure and epitaxially formed on the base layer, the first and second lattice structures being sufficiently different to create a strain in the active layer with a corresponding piezoelectrically induced polarization field in the active layer, the active layer having a band gap energy corresponding to a desired photon energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.