Type

Journal Article

Authors

Justin D. Holmes
Nikolay Petkov
Colm O'Dwyer
Christoph Marschner
Johann Hlina
Colm O'Regan
Richard Hobbs
Olan Lotty

Subjects

Chemistry

Topics
coalescence germanium nanowires metal catalysts ostwald ripening self seeded controlled growth size distribution

Self-seeded growth of germanium nanowires: coalescence and ostwald ripening (2012)

Abstract We report the controlled self-seeded growth of highly crystalline Ge nanowires, in the absence of conventional metal seed catalysts, using a variety of oligosilylgermane precursors and mixtures of germane and silane compounds (Ge:Si ratios between 1:4 and 1:1). The nanowires produced were encased in an amorphous shell of material derived from the precursors, which acted to isolate the Ge seed particles from which the nanowires were nucleated. The mode diameter and size distribution of the nanowires were found to increase as the growth temperature and Ge content in the precursors increased. Specifically, a model was developed to describe the main stages of self-seeded Ge nanowire growth (nucleation, coalescence, and Ostwald ripening) from the oligosilylgermane precursors and, in conjunction with TEM analysis, a mechanism of growth was proposed.
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Full list of authors on original publication

Justin D. Holmes, Nikolay Petkov, Colm O'Dwyer, Christoph Marschner, Johann Hlina, Colm O'Regan, Richard Hobbs, Olan Lotty

Experts in our system

1
Justin D. Holmes
University College Cork
Total Publications: 287
 
2
Nikolay Petkov
University College Cork
Total Publications: 64
 
3
Colm O'Dwyer
University College Cork
Total Publications: 239
 
4
Christoph Marschner
University College Cork
Total Publications: 5
 
5
Colm O'Regan
University College Cork
Total Publications: 16
 
6
Richard G. Hobbs
University College Cork
Total Publications: 11
 
7
Olan Lotty
University College Cork
Total Publications: 13