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Large (6°) Off-Angle Effects on Sublattice Ordering and Band-Gap Energy in Ga0.5In0.5P Grown on (001) GaAs Substrates

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Copyright (c) 1989 The Japan Society of Applied Physics
, , Citation Akiko Gomyo et al 1989 Jpn. J. Appl. Phys. 28 L1728 DOI 10.1143/JJAP.28.L1728

1347-4065/28/10A/L1728

Abstract

Effects of a large (6°) misorientation angle of (001) GaAs substrates on the <1/2, 1/2, 1/2 > superlattice (SL) formation and the band-gap energy (Eg) for Ga0.5In0.5P were studied. It was found that the [-1/2, 1/2, 1/2] SL formation is strongly enhanced and the [1/2, -1/2, 1/2] SL formation is virtually suppressed, for the case of 6° misorientation towards the [bar 110] direction. In the case of 6° misorientation towards the [110] direction, both SLs were formed, accompanied by significant disorders. The Eg values seemed to correspond well to the degrees of ordering; this is consistent with the previous observation.

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10.1143/JJAP.28.L1728