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Growth of pure zinc-blende GaAs(P) core–shell nanowires with highly regular morphology
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Zhang, Yunyan, Fonseka, H. Aruni, Aagesen, Martin, Gott, James A., Sánchez, Ana M., Wu, Jiang, Kim, Dongyoung, Jurczak, Pamela, Huo, Suguo and Liu, Huiyun (2017) Growth of pure zinc-blende GaAs(P) core–shell nanowires with highly regular morphology. Nano Letters, 17 (8). pp. 4946-4950. doi:10.1021/acs.nanolett.7b02063 ISSN 1530-6984.
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Official URL: http://dx.doi.org/10.1021/acs.nanolett.7b02063
Abstract
The growth of self-catalyzed core–shell nanowires (NWs) is investigated systematically using GaAs(P) NWs. The defects in the core NW are found to be detrimental for the shell growth. These defects are effectively eliminated by introducing beryllium (Be) doping during the NW core growth and hence forming Be–Ga alloy droplets that can effectively suppress the WZ nucleation and facilitate the droplet consumption. Shells with pure zinc-blende crystal quality and highly regular morphology are successfully grown on the defect-free NW cores and demonstrated an enhancement of one order of magnitude for room-temperature emission compared to that of the defective shells. These results provide useful information on guiding the growth of high-quality shell, which can greatly enhance the NW device performance.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
Library of Congress Subject Headings (LCSH): | Nanowires, Semiconductors, Beryllium | |||||||||
Journal or Publication Title: | Nano Letters | |||||||||
Publisher: | American Chemical Society | |||||||||
ISSN: | 1530-6984 | |||||||||
Official Date: | 9 October 2017 | |||||||||
Dates: |
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Volume: | 17 | |||||||||
Number: | 8 | |||||||||
Page Range: | pp. 4946-4950 | |||||||||
DOI: | 10.1021/acs.nanolett.7b02063 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Date of first compliant deposit: | 15 January 2018 | |||||||||
Date of first compliant Open Access: | 15 January 2018 | |||||||||
RIOXX Funder/Project Grant: |
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