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Browse Journals & Magazines > Applied Physics Letters ...> Volume:85 Issue:10 Help

GaAs/AlGaAs nanowires capped with AlGaAs layers on GaAs(311)B substrates

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3 Author(s)
Tateno, K. ; NTT Basic Research Laboratories, NTT corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan ; Gotoh, H. ; Watanabe, Y.

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We have investigated GaAs/AlGaAs nanowires capped with AlGaAs layers for optical device applications. GaAs nanowires are not so stable during AlGaAs capping growth at high temperature. However, AlGaAs nanowires retain their shapes, and GaAs nanowires sandwiched between AlGaAs wires were capped at temperatures as high as 700°C. The capped structures showed sharp photoluminescence peaks at around 730 nm at 4 K, which originated from excitons in quantum wires. We confirmed that the AlGaAs capping layers were grown smoothly around nanowires so that surface recombination centers in GaAs nanowires were reduced compared with air-exposed GaAs wires.

Published in:
Applied Physics Letters  (Volume:85 ,  Issue: 10 )

Date of Publication: Sep 2004

Page(s):
1808 - 1810
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.1789234
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Sep 2004

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