Multispectral radiation detectors using strain-compensating superlattices
US6455908B1 · kind B1 · utility
31Cited by
3References
16Claims
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Key dates
| Filing date | Mar 9, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/544
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A multispectral radiation detector for detecting radiation in at least two spectral bands, comprises a substrate and a layer stack grown on the substrate. The layer stack comprises at least first and second photodiodes, each photodiode having at least one strain-compensating superlattice absorbing layer substantially lattice matched to adjacent layers of the detector. Each strain-compensating superlattice absorbing layer has an energy gap responsive to radiation energy in a corresponding spectral region and different from the energy gaps of other strain-compensating superlattice absorbing layers of the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.