Conference proceeding
Single- and two-color HgTe/CdTe-superlattice based infrared detectors
Quantum Sensing and Nanophotonic Devices III, Vol.6127(1), pp.61270W-61270W-11
Proceedings of SPIE
01/01/2006
DOI: 10.1117/12.640090
Abstract
The optimal performance of HgTe/CdTe superlattice-based LWIR (8-12um cutoff wavelengths) and VLWIR (greater than 12um cutoff wavelength) photovoltaic detectors is assessed theoretically. The electronic band structures and optical absorption spectra are computed with a fourteen-band restricted-basis envelope function Hamiltonian. Auger and radiative lifetimes are computed with these accurate band structures. Vertical carrier mobilities are obtained from a Monte Carlo transport methodology. Photon detectors are modeled by solving current continuity and Poisson's equations. Predictions are compared with those for HgCdTe-alloy based detectors. We find that the superlattice-based two-color detector promise sharp rises in quantum efficiencies near the cutoff wavelengths, reflecting the quasi-2-dimensional nature of their density of states.
Details
- Title: Subtitle
- Single- and two-color HgTe/CdTe-superlattice based infrared detectors
- Creators
- C. H. Grein - EPIR TechnologiesP. Boieriu - EPIR TechnologiesM. E. Flatte - University of Iowa
- Contributors
- M Razeghi (Editor)G J Brown (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- Quantum Sensing and Nanophotonic Devices III, Vol.6127(1), pp.61270W-61270W-11
- Publisher
- Spie-Int Soc Optical Engineering
- Series
- Proceedings of SPIE
- DOI
- 10.1117/12.640090
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Number of pages
- 11
- Grant note
- FA8650-04-C-5432 / Air Force
- Language
- English
- Date published
- 01/01/2006
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984429017702771
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