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Influence of Droplet Size on the Growth of High-Quality Self-Catalyzed GaAsP Nanowires

Zhang, Y; Sanchez, AM; Aagesen, M; Sun, Y; Wu, J; Kim, D; Jurczak, P; ... Liu, H; + view all (2017) Influence of Droplet Size on the Growth of High-Quality Self-Catalyzed GaAsP Nanowires. In: Huffaker, DL and Eisele, H, (eds.) Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIV. (pp. 101140K1-101140K8). Society of Photo-Optical Instrumentation Engineers (SPIE) Green open access

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Abstract

Nanowires (NWs) have better functionality and superior performance as compared with the traditional thin film counterparts. However, NW growth is highly complicated and the growth mechanism is far from clear, especially when it is grown by vapor-liquid-solid mode. In this work, the influences of droplet size on the growth of self-catalyzed ternary NWs were studied using GaAsP NWs. The size-induced Gibbs−Thomson (GT) effect is observed for the first time in the self-catalyzed growth mode, which can make the smaller catalytic droplets have lower effective supersaturations. Thus, the droplet size can significantly influence the uniformity and composition of NWs. By carefully control the droplet size, the growth of highly uniform NW arrays are demonstrated. These results provide useful information for understanding the mechanisms of self-catalyzed III−V NW nucleation and growth with the important ternary III−V material systems.

Type: Proceedings paper
Title: Influence of Droplet Size on the Growth of High-Quality Self-Catalyzed GaAsP Nanowires
Event: SPIE Photonics West - OPTO 2017
Location: San Francisco, California, United States
Dates: 28 January 2017 - 02 February 2017
ISBN-13: 978151060669-2
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2249878
Publisher version: http://dx.doi.org/10.1117/12.2249878
Language: English
Additional information: © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Nanoscience & Nanotechnology, Optics, Physics, Applied, Science & Technology - Other Topics, Physics, Nanowire, droplet size, self-catalyzed, Gibbs-Thomson effect, GaAsP, MOLECULAR-BEAM EPITAXY, QUANTUM DOTS, SPACER LAYER, TEMPERATURE, SILICON, PERFORMANCE, SUBSTRATE, DIODES
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1571455
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