Self-directed Growth of AlGaAs Core-shell Nanowires for Visible Light Applications

Overview

Journal Nano Lett

Publisher American Chemical Society

Specialty Biotechnology

Date 2007 Aug 19

PMID 17696557

Citations 4

Authors

Chen Chen

Shyemaa Shehata

Cecile Fradin

Ray LaPierre

Christophe Couteau

Gregor Weihs

Affiliations

Soon will be listed here.

Abstract

Al0.37Ga0.63As nanowires (NWs) were grown in a molecular beam epitaxy system on GaAs(111)B substrates. Micro-photoluminescence measurements and energy dispersive X-ray spectroscopy indicated a core--shell structure and Al composition gradient along the NW axis, producing a potential minimum for carrier confinement. The core--shell structure formed during growth as a consequence of the different Al and Ga adatom diffusion lengths.

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