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Type II superlattice detectors at SCD

Infrared Technology and Applications XLVII, 2021
The InAs/InSb/GaSb/AlSb family of III-V alloys and superlattice materials offer unique possibilities for band structure engineering, because they can be grown on GaSb or InSb substrates with high quality and satisfactory control of strain, doping and composition.
Philip C. Klipstein   +20 more
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Strained type II superlattices

Surface Science, 1988
Abstract We investigate the electronic structure of the strained type II superlattice InAs/Ga 1− x In x Sb. Strain, which is adjusted by the alloy composition, x , significantly changes the electronic structure of the superlattice and allows small band gap materials to be achieved in thin layer superlattices.
D.L. Smith, C. Mailhiot
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Optical absorption of type-II superlattices

Physical Review B, 1997
Optical spectra of type-II superlattices are presented, including Coulomb interaction and continuum states. We clarify the relative importance of above- and below-barrier transitions. By gradually increasing the band-gap modulation, we visualize the transition from a bulk semiconductor to a type-I or type-II superlattice.
Glutsch, Stephan   +2 more
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Surface Plasmons in Type II Superlattices

physica status solidi (b), 1988
AbstractA semi‐infinite type II semiconductor superlattice is studied using coupled Boltzmann equations. The exact equation is obtained for the surface plasma modes when the dielectric media inside and outside the surface are different. The number of solutions which are free from Landau damping depends on the parameters used.
Sy, H.K., Song, L.M.
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Deep Levels in Type-II Superlattices

MRS Proceedings, 1993
AbstractQuantum confinement in superlattices affects shallow levels and band edges considerably (length scale of order 100 Å), but not deep levels (length scale of order 5 Å). Thus by band-gap engineering, one can move a band edge through a deep level, causing the defect responsible for the level to change its doping character.
John D. Dow   +3 more
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Type-II superlattice hole effective masses

Infrared Physics & Technology, 2017
Abstract A long wavelength infrared (LWIR) type-II superlattice (T2SL) is typically characterized by a very large valence-band-edge curvature effective mass, which is often assumed to lead to poor hole mobility. A detailed examination of the LWIR T2SL heavy-hole 1 (hh1) band structure reveals that a hole with non-zero in-plane momentum ( k ‖
David Z. Ting   +2 more
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Type-II Superlattices

2018
Since their initial proposal by Esaki and Tsu1 and the advent of MBE, the interest in semiconductor superlattices (SLs) and quantum well (QW) structures has continuously increased over the years, driven by technological challenges, new physical concepts and phenomena, as well as promising applications.
Piotr Martyniuk   +2 more
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Type II superlattice barrier infrared detector

SPIE Proceedings, 2011
Significant progress has been achieved in the antimonide-based type-II superlattices since the analysis by Smith and Mailhiot in 1987 first pointed out their advantages for infrared detection. In the long-wavelength infrared (LWIR), type-II InAs/Ga(In)Sb superlattices have been shown theoretically to have reduced Auger recombination and suppressed ...
David Z. Ting   +10 more
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Type-II superlattices: the Fraunhofer perspective

SPIE Proceedings, 2010
In the past years, the development of the type-II InAs/GaSb superlattice technology at the Fraunhofer-Institute for Applied Solid State Physics (IAF) has been focused on achieving series-production readiness for third generation dualcolor superlattice detector arrays for the mid-wavelength infrared spectral range. The technology is ideally suited for
Robert Rehm   +6 more
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