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Proceedings Paper

Growth of high-quality self-catalyzed core-shell GaAsP nanowires on Si substrates
Author(s): Yunyan Zhang; Martin Aagesen; Ana M. Sanchez; Jiang Wu; Richard Beanland; Thomas Ward; Dongyoung Kim; Pamela Jurczak; Suguo Huo; Huiyun Liu
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Paper Abstract

Self-catalyzed GaAsP nanowires (NWs) have a band gap that is capable of covering the working wavelengths from green to infrared. However, the difficulties in controlling P and the complexities of the growth of ternary NWs make it challenging to fabricate them. In this work, self-catalyzed GaAsP NWs were successfully grown on Si substrates by solid-source molecular beam epitaxy and demonstrated almost stacking fault free zinc blend crystal structure, Growth of high-quality shell has been realized on the core NWs. In the shell, a quasi-3-fold composition symmetry has been observed for the first time. Moreover, these growth techniques have been successfully applied for growth on patterned Si substrates after some creative modifications such as high-temperature substrate cleaning and Ga pre-deposition. These results open up new perspectives for integrating III−V nanowire photovoltaics and visible light emitters on the silicon platform using self-catalyzed GaAsP core−shell nanowires.

Paper Details

Date Published: 15 March 2016
PDF: 8 pages
Proc. SPIE 9758, Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIII, 97580E (15 March 2016); doi: 10.1117/12.2210983
Show Author Affiliations
Yunyan Zhang, Univ. College London (United Kingdom)
Martin Aagesen, Gasp Solar ApS (Denmark)
Ana M. Sanchez, The Univ. of Warwick (United Kingdom)
Jiang Wu, Univ. College London (United Kingdom)
Richard Beanland, The Univ. of Warwick (United Kingdom)
Thomas Ward, The Univ. of Warwick (United Kingdom)
Dongyoung Kim, Univ. College London (United Kingdom)
Pamela Jurczak, Univ. College London (United Kingdom)
Suguo Huo, Univ. College London (United Kingdom)
Huiyun Liu, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 9758:
Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XIII
Diana L. Huffaker; Holger Eisele; Kimberly A. Dick, Editor(s)

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