Investigation of Energy Band Structures of InAs/GaSb and M Structure Superlattices

LI Junbin; LIU Aiming; JIANG Zhi; KONG Jincheng; LI Dongsheng; LI Yanhui; ZHOU Xuchang; YANG Wen

Volume 43 Issue 7

Jul. 2021

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LI Junbin, LIU Aiming, JIANG Zhi, KONG Jincheng, LI Dongsheng, LI Yanhui, ZHOU Xuchang, YANG Wen. Investigation of Energy Band Structures of InAs/GaSb and M Structure Superlattices[J]. Infrared Technology , 2021, 43(7): 622-628.

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Investigation of Energy Band Structures of InAs/GaSb and M Structure Superlattices

1.
Kunming Institute of Physics, Kunming 650223, China
2.
School of Physics, Dalian University of Technology, Dalian 116024, China

Received Date: 2021-04-20
Rev Recd Date: 2021-05-25
Publish Date: 2021-07-01

Abstract

Abstract

In this study, the band structures of conventional InAs/GaSb and M structure super lattices are investigated using the k·p method. First, the band structures of InAs/GaSb super lattices with various period thickness are calculated, and the period structure used for a longwave super lattice detector is obtained. Subsequently, the band structure of the M structure super lattice, which is prevalently employed in longwave super lattice infrared detectors, is also calculated. The band offset between a longwave InAs/GaSb super lattice and M structure super lattice is provided. Furthermore, based on the band structures, the relationship between the carrier density (doping density) and the position of the Fermi level for longwave InAs/GaSb and M structure super lattices is obtained. This was followed by a density of states (DOS) calculation. These calculated material parameters can provide the foundation for designing super lattice infrared detectors.
- k·p method,
- InAs/GaSb superlattice,
- M structure super lattice,
- energy band structure,
- doping density

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References(17)

References

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