Transmission mode photocathode sensitive to ultraviolet light
US5697826A · kind A · utility
5Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jul 9, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/3421
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photocathode which is responsive to ultraviolet light to release photoelectrons includes a supportive window layer of sapphire and a single-crystal active layer of AlGaN. Interposed between the window layer and the active layer is an interface layer which insures a low population density of crystalline defects at the interface of the interface layer with the active layer and in the active layer itself. Consequently, the photocathode is an effective emitter of photoelectrons in the transmission mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.