To access the full text documents, please follow this link: http://hdl.handle.net/2445/33833

Size-dependent recombination dynamics in ZnO nanowires.
Reparaz, J. S.; Güell Vilà, Frank; Wagner, M. R.; Hoffmann, A.; Cornet i Calveras, Albert; Morante i Lleonart, Joan Ramon
Universitat de Barcelona
A deep understanding of the recombination dynamics of ZnO nanowires NWs is a natural step for a precise design of on-demand nanostructures based on this material system. In this work we investigate the influence of finite-size on the recombination dynamics of the neutral bound exciton around 3.365 eV for ZnO NWs with different diameters. We demonstrate that the lifetime of this excitonic transition decreases with increasing the surface-to-volume ratio due to a surface induced recombination process. Furthermore, we have observed two broad transitions around 3.341 and 3.314 eV, which were identified as surface states by studying the dependence of their life time and intensitiy with the NWs dimensions.
2013-02-15
Òxid de zinc
Nanoestructures
Nanotecnologia
Ciència dels materials
Zinc oxide
Nanostructures
Nanotechnology
Materials science
(c) American Institute of Physics , 2010
Article
info:eu-repo/semantics/publishedVersion
American Institute of Physics
         

Show full item record

Related documents

Other documents of the same author

Reparaz, J. S.; Callsen, G.; Wagner, M. R.; Güell Vilà, Frank; Morante i Lleonart, Joan Ramon; Sotomayor Torres, C. M.; Hoffmann, A.
Reparaz, J. S.; Callsen, G.; Wagner, M. R.; Güell Vilà, Frank; Morante i Lleonart, Joan Ramon; Sotomayor Torres, C. M.; Hoffmann, A.
Reparaz, J. S.; Güell Vilà, Frank; Wagner, M. R.; Callsen, G.; Kirste, R.; Claramunt Ruiz, Sergi; Morante i Lleonart, Joan Ramon; Hoffmann, A.
Menéndez Rio, José Luis; Armelles Reig, G.; Briones Fernández-Pola, Fernando; Cebollada, Alfonso; Peiró Martínez, Francisca; Güell Vilà, Frank; Cornet i Calveras, Albert; Fernández Gubieda Ruiz, María Luisa; Gutiérrez Echevarria, Jon; Meyer, C.
Bowen, M.; Cros, V.; Petroff, F.; Fert, Albert, 1938-; Martínez Boubeta, José Carlos; Costa Krämer, José Luis; Anguita, José Virgilio; Cebollada, Alfonso; Briones Fernández-Pola, Fernando; Teresa, J. M. de; Morellon, L.; Ibarra, M. R.; Güell Vilà, Frank; Peiró Martínez, Francisca; Cornet i Calveras, Albert
 

Coordination

 

Supporters