University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Auger recombination in long-wavelength infrared InN<i><sub>x</i></sub>Sb<i><sub>1–x</i></sub> alloys

Murdin, B. N., Kamal-Saadi, M., Lindsay, A., O'Reilly, E. P., Adams, A. R., Nott, G. J., Crowder, J. G., Pidgeon, C. R., Bradley, I. V., Wells, J-P. R. , Burke, T., Johnson, A. D. and Ashley, T. (2001) Auger recombination in long-wavelength infrared InN<i><sub>x</i></sub>Sb<i><sub>1–x</i></sub> alloys Applied Physics Letters, 1568 (2001).


Download (47kB)


<p>Dilute nitrogen alloys of InSb exhibit strong band gap bowing with increasing nitrogen composition, shifting the absorption edge to longer wavelengths. The conduction band dispersion also has an enhanced nonparabolicity, which suppresses Auger recombination. We have measured Auger lifetimes in alloys with 11 and 15 µm absorption edges using a time-resolved pump-probe technique. We find the lifetimes to be longer at room temperature than equivalent band gap Hg<i><sub>1–y</i></sub>Cd<i><sub>y</i><//sub>Te alloys at the same quasi-Fermi level separation. The results are explained using a modified <b>k·p</b> Hamiltonian which explicitly includes interactions between the conduction band and a higher lying nitrogen-related resonant band.</p>

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Authors :
Murdin, B.
Kamal-Saadi, M.
Lindsay, A.
O'Reilly, E. P.
Adams, A.
Nott, G. J.
Crowder, J. G.
Pidgeon, C. R.
Bradley, I. V.
Wells, J-P. R.
Burke, T.
Johnson, A. D.
Ashley, T.
Date : 12 March 2001
DOI : 10.1063/1.1355301
Additional Information : B. N. Murdin et al., Appl. Phys. Lett. 78, 1568 (2001). Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:44
Last Modified : 16 Jan 2019 16:22

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800