Reparaz, Juan SebastianCallsen, GordonWagner, Markus R.Güell, F.Morante, Joan RamonSotomayor Torres, Clivia M.Hoffmann, Axel2020-02-272020-02-272013-06-06https://depositonce.tu-berlin.de/handle/11303/10852http://dx.doi.org/10.14279/depositonce-9747We 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.en530 PhysiknanowiresPurcell effectlifetimespatial mappingArticle2166-532X