Infrared detector and method
US5144138A · kind A · utility
29Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1989 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Oct 6, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/80
Abstract
Photocapacitive detectors with varying bandgap Hg.sub.1-x Cd.sub.x Te (604) for two color detection and one color detection with increased potential well capacity. Preferred embodiments include a transparent insulated gate (608) on a top layer (632) of Hg.sub.0.8 Cd.sub.0.2 Te over a lower layer (634) of Hg.sub.0.83 Cd.sub.0.27 Te for detection of two infrared colors by varying gate potential to either confine the potential well to the top layer or to extend the potential well to both layers. Also, methods of compositionally grading the Hg.sub.1-x Cd.sub.x Te by fluid transport plus diffusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.