Structural studies of natural superlattices in group III-V alloy epitaxial layers

A. G. Norman; T. -Y.seong; I. T. Ferguson; G. R. Booker; B. A. Joyce

doi:10.1088/0268-1242/8/1S/003

Structural studies of natural superlattices in group III-V alloy epitaxial layers

A. G. Norman, T. -Y.seong, I. T. Ferguson, G. R. Booker, B. A. Joyce

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

64 Citations (Scopus)

Abstract

Structural studies have been performed using transmission electron microscopy and diffraction on III-V ternary and quaternary alloy epitaxial layers. The results revealed that 'natural superlattice' structures had spontaneously formed in some of the layers by phase separation and/or atomic ordering which occurred at the surface during growth. The structure of these natural superlattices and the growth conditions for their occurrence are described and their effect on the electrical and optical properties of the layers, e.g. bandgap narrowing, and possible mechanisms of formation are briefly discussed.

Original language	English
Article number	003
Pages (from-to)	S9-S15
Journal	Semiconductor Science and Technology
Volume	8
Issue number	1S
DOIs	https://doi.org/10.1088/0268-1242/8/1S/003
Publication status	Published - 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0268-1242/8/1S/003

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AU - Norman, A. G.

AU - -Y.seong, T.

AU - Ferguson, I. T.

AU - Booker, G. R.

AU - Joyce, B. A.

PY - 1993

Y1 - 1993

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AB - Structural studies have been performed using transmission electron microscopy and diffraction on III-V ternary and quaternary alloy epitaxial layers. The results revealed that 'natural superlattice' structures had spontaneously formed in some of the layers by phase separation and/or atomic ordering which occurred at the surface during growth. The structure of these natural superlattices and the growth conditions for their occurrence are described and their effect on the electrical and optical properties of the layers, e.g. bandgap narrowing, and possible mechanisms of formation are briefly discussed.

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ER -

Structural studies of natural superlattices in group III-V alloy epitaxial layers

Abstract

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