Monitoring the Formation of Nanowires by Line-of-Sight Quadrupole Mass Spectrometry: A Comprehensive Description of the Temporal Evolution of GaN Nanowire Ensembles

We use line-of-sight quadrupole mass spectrometry to monitor the spontaneous formation of GaN nanowires on Si during molecular beam epitaxy. We find that the temporal evolution of nanowire ensembles is well described by a double logistic function. The analysis of the temporal evolution of nanowire e...

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Bibliographic Details
Published in:Nano letters 2015-03, Vol.15 (3), p.1930-1937
Main Authors: Fernández-Garrido, Sergio, Zettler, Johannes K, Geelhaar, Lutz, Brandt, Oliver
Format: Article
Language:English
Subjects:
Evolution
Formations
Gallium nitrides
Mathematical models
Nanostructure
Nanowires
Semiconductors
Temporal logic
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Summary:We use line-of-sight quadrupole mass spectrometry to monitor the spontaneous formation of GaN nanowires on Si during molecular beam epitaxy. We find that the temporal evolution of nanowire ensembles is well described by a double logistic function. The analysis of the temporal evolution of nanowire ensembles, prepared under a wide variety of growth conditions, allows us to construct a growth diagram that can be used to predict the average delay time that precedes nanowire formation.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl504778s