Mid-infrared absorption by short-period InAs/GaSb type II superlattices

Authors

L. L. Li, Chinese Academy of Sciences
Wen Xu, Chinese Academy of Sciences
Z. Zeng, Chinese Academy of Sciences
A. R. Wright, University of Wollongong
Chao Zhang, University of WollongongFollow
J. Zhang, Yunnan University, Kunming, China
Y. L. Shi, Kunming Institute of Physics, Kunming, China

RIS ID

29361

Publication Details

Li, L., Xu, W., Zeng, Z., Wright, A., Zhang, C., Zhang, J. & Shi, Y. (2009). Mid-infrared absorption by short-period InAs/GaSb type II superlattices. Microelectronics Journal, 40 (4-5), 815-817.

Abstract

We present a theoretical study on optical properties of short-period InAs/GaSb type-II superlattices (SLs) which can serve for mid-infrared (MIR) detection. The miniband structure of such SLs is calculated using the Kronig–Penney model. On the basis of the energy-balance equation derived from the Boltzmann equation we calculate the optical absorption coefficient. The obtained results agree with recent experimental findings. Moreover, the dependence of the MIR absorption in InAs/GaSb type-II SLs on temperature and well-widths are examined.