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Main Title: Spatial mapping of exciton lifetimes in single ZnO nanowires
Author(s): Reparaz, Juan Sebastian
Callsen, Gordon
Wagner, Markus R.
Güell, F.
Morante, Joan Ramon
Sotomayor Torres, Clivia M.
Hoffmann, Axel
Type: Article
Language Code: en
Abstract: 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.
Issue Date: 6-Jun-2013
Date Available: 27-Feb-2020
DDC Class: 530 Physik
Subject(s): nanowires
Purcell effect
spatial mapping
Sponsor/Funder: DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
Journal Title: APL Materials
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 1
Issue: 1
Article Number: 012103
Publisher DOI: 10.1063/1.4808441
EISSN: 2166-532X
Appears in Collections:FG Optische Charakterisierung von Halbleitern » Publications

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