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Spatial mapping of exciton lifetimes in single ZnO nanowires

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  • معلومة اضافية
    • بيانات النشر:
      AIP Publishing
    • الموضوع:
      2013
    • Collection:
      Dipòsit Digital de la Universitat de Barcelona
    • نبذة مختصرة :
      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.
    • File Description:
      8 p.; application/pdf
    • ISSN:
      2166-532X
    • Relation:
      Reproducció del document publicat a: http://dx.doi.org/10.1063/1.4808441; APL Materials, 2013, vol. 1, p. 012103-1-012103-7; http://dx.doi.org/10.1063/1.4808441; http://hdl.handle.net/2445/52832; 634734
    • الدخول الالكتروني :
      http://hdl.handle.net/2445/52832
    • Rights:
      cc-by (c) Reparaz, J. S. et al., 2013 ; http://creativecommons.org/licenses/by/3.0/es ; info:eu-repo/semantics/openAccess
    • الرقم المعرف:
      edsbas.1C1CCC92