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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.
Keywords: Òxid de zinc
Ciència dels materials
Zinc oxide
Materials science
Issue Date: 2010
Publisher: American Institute of Physics
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.
Note: Reproducció del document publicat a:
It is part of: Applied Physics Letters, 2010, vol. 97, p. 133116-1-133116-3
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ISSN: 0003-6951
Appears in Collections:Articles publicats en revistes (Electrònica)

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