Use this identifier to quote or link this document: http://hdl.handle.net/2072/227171

Spatial mapping of exciton lifetimes in single ZnO nanowires
Reparaz, J. S.; Callsen, G.; Wagner, M. R.; Güell Vilà, Frank; Morante i Lleonart, Joan Ramon; Sotomayor Torres, C. M.; Hoffmann, A.
We investigate the spatial dependence of the exciton lifetimes in single ZnO nanowires. We have found that the free exciton and bound exciton lifetimes exhibit a maximum at the center of nanowires, while they decrease by 30% towards the tips. This dependence is explained by considering the cavity-like properties of the nanowires in combination with the Purcell effect. We show that the lifetime of the bound-excitons scales with the localization energy to the power of 3/2, which validates the model of Rashba and Gurgenishvili at the nanoscale.
2014-03-25
Nanoelectrònica
Semiconductors
Optoelectrònica
Òxid de zinc
Luminescència
Nanoelectronics
Semiconductors
Optoelectronics
Zinc oxide
Luminescence
cc-by (c) Reparaz, J. S. et al., 2013
http://creativecommons.org/licenses/by/3.0/es
Article
info:eu-repo/semantics/publishedVersion
AIP Publishing
         

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