Correlation Between Bands Structure and Quantum Magneto Transport Properties in InAs/GaxIn1−xSb Type II Superlattice for Infrared Detection

We have used the envelope function formalism to investigate the bands structure of LWIR type II SL InAs (d1 = 2. 18d2)/In0.25Ga0.75Sb(d2 = 21.5 Å). Thus, we extracted optical and transport parameters as the band gap, cut off wavelength, carriers effective mass, Fermi level and the density of state....

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Bibliographic Details
Published in:Frontiers in physics 2020-03, Vol.8
Main Authors: Benchtaber, Nassima, Nafidi, Abdelhakim, Barkissy, Driss, Boutramine, Abderrezak, Benaadad, Merieme, Melkoud, Samir, Es-Salhi, Es-Said, Chibane, Fatiha
Format: Article
Language:English
Subjects:
bands structure
density of states
InAs/GaxIn1-xSb superlattice
infrared detection
quantum magneto transport
Shubnikov-de Haas effect
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Summary:We have used the envelope function formalism to investigate the bands structure of LWIR type II SL InAs (d1 = 2. 18d2)/In0.25Ga0.75Sb(d2 = 21.5 Å). Thus, we extracted optical and transport parameters as the band gap, cut off wavelength, carriers effective mass, Fermi level and the density of state. Our results show that the higher optical cut-off wavelength can be achieved with smaller layer thicknesses. The semiconductor-semi metal transition was studied as a function of temperature. Our results permit us the interpretations of Hall and Shubnikov-de Haas effects. These results are in agreement with experimental results in literature and a guide for engineering infrared detectors.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2020.00052