Effect of surface steps on the microstructure of lateral composition modulation

Journal Article · Mon Jul 31 00:00:00 EDT 2000 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.127080· OSTI ID:20217164

Follstaedt, D M ^[1]; Reno, J L ^[1]; Jones, E D ^[1]; Lee, S R ^[1]; Norman, A G ^[2]; Moutinho, H R ^[2]; Mascarenhas, A ^[2]; Twesten, R D ^[3]

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1. Sandia National Laboratories, M.S. 1056, Albuquerque, New Mexico 87185-1056 (United States)
2. National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3393 (United States)
3. University of Illinois, Urbana, Illinois 61801-2985 (United States)

Growth of InAs/AlAs short-period superlattices on appropriately miscut (001) InP substrates is shown to alter the microstructure of composition modulation from a two-dimensional organization of short compositionally enriched wires to a single dominant modulation direction with wire lengths up to {approx}1 {mu}m. The effects of miscut are interpreted in terms of surface step orientation and character. The material is strongly modulated and exhibits intense optical emission. The one-dimensional modulations appear potentially useful for new devices that take advantage of the preferred direction formed in the growth plane. (c) 2000 American Institute of Physics.

• OSTI ID: 20217164
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 5 Vol. 77; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ARSENIDES
CHEMICAL COMPOSITION
EXPERIMENTAL DATA
INDIUM ARSENIDES
MICROSTRUCTURE
PHOTOLUMINESCENCE
SEMICONDUCTOR LASERS
SUPERLATTICES