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Issue 10, 2010
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Self-assembled single crystal germaniumnanowires arrays under supercritical hydrothermal conditions

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Abstract

Arrays of single crystal germanium nanowires were fabricated in a self-assembled manner by a hydrothermal method without any metallic catalyst or templates. SEM, TEM, HRTEM, SAED, EDS, FTIR analyses show that the germanium nanowires are composed of a core of germanium and a very thin GeO2 shell, and have a smooth surface and straightforward body, uniform diameters, a rectangular growth sectional view, and a knife edge growth tip. In the growth process, the H+ and OH− play an important assistant role, a role of oxidation-reduction in the growth tip. PL shows that the germanium nanowires have intensive purple light emission at about 360 nm and 396 nm, which may be come from nano-size effect of GeNWs and the neutral oxygen vacancy, respectively.

Graphical abstract: Self-assembled single crystal germanium nanowires arrays under supercritical hydrothermal conditions

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Article information


Submitted
19 Jan 2010
Accepted
06 Apr 2010
First published
29 May 2010

CrystEngComm, 2010,12, 2975-2981
Article type
Paper

Self-assembled single crystal germanium nanowires arrays under supercritical hydrothermal conditions

L. W. Lin, Y. H. Tang, C. S. Chen and H. F. Xu, CrystEngComm, 2010, 12, 2975
DOI: 10.1039/B927384K

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