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Title:	Recombination dynamics in ZnO nanowires: Surfaces states versus mode quality factor
Author:	Reparaz, J. S.; Güell Vilà, Frank; Wagner, M. R.; Callsen, G.; Kirste, R.; Claramunt Ruiz, Sergi; Morante i Lleonart, Joan Ramon; Hoffmann, A.
Other authors:	Universitat de Barcelona
Abstract:	In this work, we investigate the influence of finite size on the recombinations dynamics of ZnO nanowires. We demonstrate that diameter as well as lenght of nanowires determine the lifetime of the neutral donor bound excitons. Our findings suggest that while the length is mainly responsible for different mode quality factors of the cavity-like nanowires, the diameter determines the influence of surface states as alternative recombinations channels for the optical modes trapped in the nanocavity. In addition, comparing nanowires grown using different catalyst we show that the surfaces states strongly depend on each precursor characteristics.
Subject(s):	-Òxid de zinc -Nanotecnologia -Nanoestructures -Ciència dels materials -Zinc oxide -Nanotechnology -Nanostructures -Materials science
Rights:	(c) American Institute of Physics , 2010
Document type:	Article Article - Published version
Published by:	American Institute of Physics
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