Growth of InAs GaSb strained layer superlattices. II

G. R. Booker; P. C. Klipstein; M. Lakrimi; S. Lyapin; N. J. Mason; I. J. Murgatroyd; R. J. Nicholas; T. Y. Seong; D. M. Symons; P. J. Walker

doi:10.1016/0022-0248(94)00536-2

Growth of InAs GaSb strained layer superlattices. II

G. R. Booker, P. C. Klipstein, M. Lakrimi, S. Lyapin, N. J. Mason, I. J. Murgatroyd, R. J. Nicholas, T. Y. Seong, D. M. Symons, P. J. Walker

University of Oxford

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27 Scopus citations

Abstract

InAs GaSb strained layer superlattices (SLSs) have been grown by metalorganic vapour phase epitaxy (MOVPE) at atmospheric pressure. Initially the interfaces of the SLS have been biased towards pairs of GaAs or InSb using three different gas switching sequences. Room temperature Raman optical modes show that growing the interfaces using an ALE (atomic layer epitaxy) like switching sequence gives interfaces of very high quality probably near the optimum, which is a monolayer, Growing with other switching sequences leads to one of the interfaces being non-uniform. By growing samples with alternating (InSb,GaAs or GaAs,InSb) pairs of interfaces it is possible to unambiguously assign this non-uniformity to one of the two possible interfaces for the first time. Furthermore, the influence of the band overlap on interface type has been studied using optimised SLSs in the semimetallic regime.

Original language	English
Pages (from-to)	495-502
Number of pages	8
Journal	Journal of Crystal Growth
Volume	146
Issue number	1-4
DOIs	https://doi.org/10.1016/0022-0248(94)00536-2
State	Published - 1 Jan 1995
Externally published	Yes

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title = "Growth of InAs GaSb strained layer superlattices. II",

abstract = "InAs GaSb strained layer superlattices (SLSs) have been grown by metalorganic vapour phase epitaxy (MOVPE) at atmospheric pressure. Initially the interfaces of the SLS have been biased towards pairs of GaAs or InSb using three different gas switching sequences. Room temperature Raman optical modes show that growing the interfaces using an ALE (atomic layer epitaxy) like switching sequence gives interfaces of very high quality probably near the optimum, which is a monolayer, Growing with other switching sequences leads to one of the interfaces being non-uniform. By growing samples with alternating (InSb,GaAs or GaAs,InSb) pairs of interfaces it is possible to unambiguously assign this non-uniformity to one of the two possible interfaces for the first time. Furthermore, the influence of the band overlap on interface type has been studied using optimised SLSs in the semimetallic regime.",

author = "Booker, {G. R.} and Klipstein, {P. C.} and M. Lakrimi and S. Lyapin and Mason, {N. J.} and Murgatroyd, {I. J.} and Nicholas, {R. J.} and Seong, {T. Y.} and Symons, {D. M.} and Walker, {P. J.}",

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doi = "10.1016/0022-0248(94)00536-2",

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T1 - Growth of InAs GaSb strained layer superlattices. II

AU - Booker, G. R.

AU - Klipstein, P. C.

AU - Lakrimi, M.

AU - Lyapin, S.

AU - Mason, N. J.

AU - Murgatroyd, I. J.

AU - Nicholas, R. J.

AU - Seong, T. Y.

AU - Symons, D. M.

AU - Walker, P. J.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - InAs GaSb strained layer superlattices (SLSs) have been grown by metalorganic vapour phase epitaxy (MOVPE) at atmospheric pressure. Initially the interfaces of the SLS have been biased towards pairs of GaAs or InSb using three different gas switching sequences. Room temperature Raman optical modes show that growing the interfaces using an ALE (atomic layer epitaxy) like switching sequence gives interfaces of very high quality probably near the optimum, which is a monolayer, Growing with other switching sequences leads to one of the interfaces being non-uniform. By growing samples with alternating (InSb,GaAs or GaAs,InSb) pairs of interfaces it is possible to unambiguously assign this non-uniformity to one of the two possible interfaces for the first time. Furthermore, the influence of the band overlap on interface type has been studied using optimised SLSs in the semimetallic regime.

AB - InAs GaSb strained layer superlattices (SLSs) have been grown by metalorganic vapour phase epitaxy (MOVPE) at atmospheric pressure. Initially the interfaces of the SLS have been biased towards pairs of GaAs or InSb using three different gas switching sequences. Room temperature Raman optical modes show that growing the interfaces using an ALE (atomic layer epitaxy) like switching sequence gives interfaces of very high quality probably near the optimum, which is a monolayer, Growing with other switching sequences leads to one of the interfaces being non-uniform. By growing samples with alternating (InSb,GaAs or GaAs,InSb) pairs of interfaces it is possible to unambiguously assign this non-uniformity to one of the two possible interfaces for the first time. Furthermore, the influence of the band overlap on interface type has been studied using optimised SLSs in the semimetallic regime.

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Growth of InAs GaSb strained layer superlattices. II

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