Optimization of absorption in InAs/InxGa1-xSb superlattices for long-wavelength infrared detection
✍ Scribed by Frank Szmulowicz; Eric R. Heller; Kent Fisher; Frank L. Madarasz
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 314 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0749-6036
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✦ Synopsis
The linear absorption coefficient of (\operatorname{InAs} / \operatorname{In}{\mathrm{x}} \mathrm{Ga}{1 \cdot \mathrm{X}} \mathrm{Sb}) superlattices is optimized based on an (8 \times 8) envelope-function approximation (EFA) model. The effect of layer widths, indium content, buffer choice, substrate orientation, interface type, layer growth order, piezoelectricity, and layer width variations on the cutoff wavelength and the linear absorption coefficient is investigated. We propose specific superlattice parameters that optimize absorption for superlattices grown on GaSb at three cutoff wavelengths.
(C) 1995 Academic Press Limited