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Direct imaging of the spatial diffusion of excitons in single semiconductor nanowires

Fickenscher, M. A.; Jackson, H. E.; Smith, L. M.; Yarrison-Rice, J. M.; Kang, J. H.; Paiman, Suriati; Gao, Q.; Jagadish, C.; Tan, Hark Hoe


We use spatially and temporally resolved photoluminescence to measure excitondiffusion in single zinc blende GaAs/AlGaAs core/shell and mixed phase InPnanowires.Excitons in the single phase GaAs/AlGaAs nanowires are seen to diffuse rapidly throughout the nanowire with a measured diffusion constant ranging from 45 to 100 cm²/s, while in the mixed phase, InPnanowireelectrons and holes are seen to rapidly localize to the quantum confined states in the zinc blende and wurtzite segments,...[Show more]

CollectionsANU Research Publications
Date published: 2011-12-29
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.3671367


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