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Temperature dependence of photoluminescence from single core-shell GaAs–AlGaAs nanowires

Titova, L. V.; Hoang, Thang B.; Jackson, H. E.; Smith, L. M.; Yarrison-Rice, J. M.; Kim, Y.; Joyce, H. J.; Tan, H. H.; Jagadish, C.


Temperature-dependent polarized microphotoluminescencemeasurements of single GaAs∕AlGaAs core-shell nanowires are used to probe their electronic states. The low-temperature emission from these wires is strongly enhanced compared with that observed in bare GaAsnanowires and is strongly polarized, reflecting the dielectric mismatch between the nanowire and the surrounding air. The temperature-dependentband gap of the nanowires is seen to be somewhat different from that observed in bulk GaAs, and...[Show more]

CollectionsANU Research Publications
Date published: 2006-10-26
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.2364885


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