Quantum-well radiation-interactive device, and methods of radiation detection and modulation
US5023685A · kind A · utility
38Cited by
7References
26Claims
0Family size
Inventors
Key dates
| Filing date | Jun 6, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Jun 6, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Electromagnetic radiation such as, in particular, infrared radiation is detected opto-electronically by means of a superlattice structure forming quantum wells having a single bound state; in the interest of minimizing dark-current, relatively wide barriers are used between quantum wells. Resulting highly sensitive, high-speed detectors can be used in optical communications, for terrain mapping, and for infrared viewing. Furthermore, upon application of a variable electrical potential across the superlattice structure, radiation traversing such structure can be modulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.