Journal article
Self-Directed Growth of AlGaAs Core−Shell Nanowires for Visible Light Applications
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.
Authors
Chen; Shehata S; Fradin C; LaPierre R; Couteau C; Weihs G
Journal
Nano Letters, Vol. 7, No. 9, pp. 2584–2589
Publisher
American Chemical Society (ACS)
Publication Date
September 1, 2007
DOI
10.1021/nl070874k
ISSN
1530-6984