Share This Article:

Long-Period InAs/GaSb Type-II Superlattices for Terahertz Application

Abstract Full-Text HTML XML Download Download as PDF (Size:3387KB) PP. 1880-1888
DOI: 10.4236/jmp.2014.517182    3,789 Downloads   4,147 Views  
Author(s)    Leave a comment


We present a theoretical study on the terahertz (THz) optoelectronic properties of long-period InAs/GaSb type-II super lattices (SLs). The eight-band k·p model is used to calculate the electronic structures of such SLs and on the basis of band structures, the Boltzmann equation approach is employed to calculate the optical absorption coefficients for the corresponding SL systems. It is found that long-period InAs/GaSb type-II SLs have a considerable absorption in the THz bandwidth. By examining the dependence of THz absorption coefficient on the InAs/GaSb layer widths, we demonstrate that with a proper choice of InAs/GaSb layer widths, an optimized THz absorption can be achieved. This study is pertinent to the potential application of InAs/GaSb type-II SLs as THz photo detectors.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Li, L. , Ni, J. and Xu, W. (2014) Long-Period InAs/GaSb Type-II Superlattices for Terahertz Application. Journal of Modern Physics, 5, 1880-1888. doi: 10.4236/jmp.2014.517182.


[1] Magri, R. and Zunger, A. (2002) Physical Review B, 65, Article ID: 165302.
[2] Lau, W.H. and Flatte, M.E. (2002) Applied Physics Letters, 80, 1683.
[3] Szmulowicz, F., Haugan, H.J. and Brown, G.J. (2004) Physical Review B, 69, Article ID: 155321.
[4] Haugan, H.J., Szmulowicz, F., Brown, G.J. and Mahalingam, K. (2004) Journal of Applied Physics, 96, 2580.
[5] Haugan, H.J., Szmulowicz, F., Mahalingam, K., Brown, G.J., Munshi, S.R. and Ullrich, B. (2005) Applied Physics Letters, 87, Article ID: 261106.
[6] Rodriguez, J.B., Christol, P., Cerutti, L., Chevrier, F. and Joullie, A. (2005) Journal of Crystal Growth, 274, 6.
[7] Wei, Y., Hood, A., Yau, H., Gin, A., Razeghi, M., Tidrow, M.Z. and Nathan, V. (2005) Applied Physics Letters, 86, Article ID: 233106.
[8] Plis, E., Annamalai, S., Posani, K.T., Krishna, S., Rupani, R.A. and Ghosh, S. (2006) Journal of Applied Physics, 100, Article ID: 014510.
[9] Li, J.V., Hill, C.J., Mumolo, J., Gunapala, S., Mou, S. and Chuang, S.L. (2008) Applied Physics Letters, 93, Article ID: 163505.
[10] Rejeb, S.B., Debbichi, M., Said, M., Gassenq, A., Tournie, E. and Christol, P. (2010) Journal of Applied Physics, 108, Article ID: 093107.
[11] Li, L.L., Xu, W. and Peeters, F.M. (2010) Physical Review B, 82, Article ID: 235422.
[12] Lang, X.L. and Xia, J.B. (2011) Journal of Physics D: Applied Physics, 44, Article ID: 425103.
[13] Li, L.L., Xu, W., Zeng, Z., Wright, A.R., Zhang, C., Zhang, J., Shi, Y.L. and Lu, T.C. (2009) Microelectronics Journal, 40, 812.
[14] Li, L.L., Xu, W., Zhang, J. and Shi, Y.L. (2009) Journal of Applied Physics, 105, Article ID: 013115.
[15] Kane, E.O. (1957) Journal of Physics and Chemistry of Solids, 1, 249.
[16] Burt, M.G. (1999) Journal of Physics: Condensed Matter, 11, 53.
[17] Liu, G.B. and Chuang, S.L. (2002) Physical Review B, 65, Article ID: 165220.
[18] Li, J., Yang, W. and Chang, K. (2009) Physical Review B, 80, Article ID: 035303.
[19] Xu, W., Li, L.L., Dong, H.M., Gumbs, G. and Folkes, P.A. (2010) Journal of Applied Physics, 108, Article ID: 053709.
[20] Lew Yan Voon, L.C. and Ram-Mohan, L.R. (1993) Physical Review B, 47, Article ID: 15500.
[21] Xu, W. (2006) Applied Physics Letters, 89, Article ID: 171107.
[22] Qiao, P.F., Mou, S. and Chuang, S.L. (2012) Optics Express, 20, 2319.
[23] Halvorsen, E., Galperin, Y. and Chao, K.A. (2000) Physical Review B, 61, Article ID: 16743.

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.