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

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

Effects of a large (6°) misorientation angle of (001) GaAs substrates on the 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 [10] 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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