Research on empirical tight-binding method calculation energy band of InAs/InAsSb superlattice

Jiang Zhi; Jun-bin Li; Li-bin Tang; Yan-hui Li; Xu-chang Zhou; Jin-cheng Kong; Dong-sheng Li

doi:10.1117/12.2619369

8 July 2022 Research on empirical tight-binding method calculation energy band of InAs/InAsSb superlattice

Jiang Zhi, Jun-bin Li, Li-bin Tang, Yan-hui Li, Xu-chang Zhou, Jin-cheng Kong, Dong-sheng Li

Proceedings Volume 12284, 2021 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 122840C (2022) https://doi.org/10.1117/12.2619369
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

In this article, the band structures of InAs/InAsSb superlattices are calculated by sp3s* model, which is based on empirical tight-bonding method (ETBM). First, the band structures of InAs/InAsSb superlattice with varies period are calculated, the calculated bandgap results are consistent with experiment values. The conduction band edge (Ec level) for the two sets of InAs/InAsSb T2SLs are approximately independent of the cutoff wavelength (or band gap), and they are significantly lower than the conduction band edges of InAs/GaSb. The relationship between periodic structure and cutoff wavelength is obtained under the condition of strain balance. Then the holes effective mass at Γ point of mini-band along the growth direction for different structure InAs/InAsSb superlattice are derived. Finally, the composition segregation function is included in our model in order to study the impact of Sb segregation on InAs/InAsSb superlattice. These material parameters obtained from our calculated results can be used in the design of T2SL-based IR detectors.

Citation Download Citation

Jiang Zhi, Jun-bin Li, Li-bin Tang, Yan-hui Li, Xu-chang Zhou, Jin-cheng Kong, and Dong-sheng Li "Research on empirical tight-binding method calculation energy band of InAs/InAsSb superlattice", Proc. SPIE 12284, 2021 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 122840C (8 July 2022); https://doi.org/10.1117/12.2619369

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available