Auger recombination in long-wavelength infrared InNxSb1-x alloys

B. N. Murdin; M. Kamal-Saadi; A. Lindsay; E. P. O'Reilly; A. R. Adams; G. J. Nott; J. G. Crowder; C. R. Pidgeon; I. V. Bradley; J. P R Wells; T. Burke; A. D. Johnson; T. Ashley

doi:10.1063/1.1355301

Auger recombination in long-wavelength infrared InN_xSb_1-x alloys

B. N. Murdin, M. Kamal-Saadi, A. Lindsay, E. P. O'Reilly, A. R. Adams, G. J. Nott, J. G. Crowder, C. R. Pidgeon, I. V. Bradley, J. P R Wells, T. Burke, A. D. Johnson, T. Ashley

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

74 Citations (Scopus)

Abstract

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_1-yCd_yTe alloys at the same quasi-Fermi level separation. The results are explained using a modified k·p Hamiltonian which explicitly includes interactions between the conduction band and a higher lying nitrogen-related resonant band. © 2001 American Institute of Physics.

Original language	English
Pages (from-to)	1568-1570
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	11
DOIs	https://doi.org/10.1063/1.1355301
Publication status	Published - 12 Mar 2001

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title = "Auger recombination in long-wavelength infrared InNxSb1-x alloys",

abstract = "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 Hg1-yCdyTe alloys at the same quasi-Fermi level separation. The results are explained using a modified k·p Hamiltonian which explicitly includes interactions between the conduction band and a higher lying nitrogen-related resonant band. {\textcopyright} 2001 American Institute of Physics.",

author = "Murdin, {B. N.} and M. Kamal-Saadi and A. Lindsay and O'Reilly, {E. P.} and Adams, {A. R.} and Nott, {G. J.} and Crowder, {J. G.} and Pidgeon, {C. R.} and Bradley, {I. V.} and Wells, {J. P R} and T. Burke and Johnson, {A. D.} and T. Ashley",

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T1 - Auger recombination in long-wavelength infrared InNxSb1-x alloys

AU - Murdin, B. N.

AU - Kamal-Saadi, M.

AU - Lindsay, A.

AU - O'Reilly, E. P.

AU - Adams, A. R.

AU - Nott, G. J.

AU - Crowder, J. G.

AU - Pidgeon, C. R.

AU - Bradley, I. V.

AU - Wells, J. P R

AU - Burke, T.

AU - Johnson, A. D.

AU - Ashley, T.

PY - 2001/3/12

Y1 - 2001/3/12

N2 - 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 Hg1-yCdyTe alloys at the same quasi-Fermi level separation. The results are explained using a modified k·p Hamiltonian which explicitly includes interactions between the conduction band and a higher lying nitrogen-related resonant band. © 2001 American Institute of Physics.

AB - 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 Hg1-yCdyTe alloys at the same quasi-Fermi level separation. The results are explained using a modified k·p Hamiltonian which explicitly includes interactions between the conduction band and a higher lying nitrogen-related resonant band. © 2001 American Institute of Physics.

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DO - 10.1063/1.1355301

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

ER -

Auger recombination in long-wavelength infrared InN_xSb_1-x alloys

Abstract

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