Energy band of InAs/GaSb superlattice by K.p method

ShengWen Xie; Lili Xie; Jiushuang Zhang; Xu Zhang; Qiyang Sun; Ruiqing Chai; Ben Fan; Liqun Dai; Shengya Xu; Liqiang Han; Ruiming Chen; Chang Faran

doi:10.1117/12.2605121

31 December 2021 Energy band of InAs/GaSb superlattice by K.p method

ShengWen Xie, Lili Xie, Jiushuang Zhang, Xu Zhang, Qiyang Sun, Ruiqing Chai, Ben Fan, Liqun Dai, Shengya Xu, Liqiang Han, Ruiming Chen, Chang Faran

Author Affiliations +

Proceedings Volume 12061, AOPC 2021: Infrared Device and Infrared Technology; 1206120 (2021) https://doi.org/10.1117/12.2605121
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

The band structures of the InAs/GaSb type-Ⅱ superlattice are investigated using the 8-band k.p method. The finite difference method (FDE) is used for solving the Schrödinger equation. It is found that a small variation in the valence band offset (VBO, one of the input parameters) could cause a great change in cut-off wavelength, especially at the long-wavelength range. We also developed a GUI application based on this method. Users could quickly get band structure details, such as bandgap energy, miniband energy, and wavefunctions with this GUI. The program and its code are available at https://github.com/STONEDIY/K.p-Mehtod-for-InAs-GaSb-Superlattice-Band-Structure-Calculation.

Citation Download Citation

ShengWen Xie, Lili Xie, Jiushuang Zhang, Xu Zhang, Qiyang Sun, Ruiqing Chai, Ben Fan, Liqun Dai, Shengya Xu, Liqiang Han, Ruiming Chen, and Chang Faran "Energy band of InAs/GaSb superlattice by K.p method", Proc. SPIE 12061, AOPC 2021: Infrared Device and Infrared Technology, 1206120 (31 December 2021); https://doi.org/10.1117/12.2605121

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