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Emergence of localized states in narrow GaAs/AlGaAs nanowire quantum well tubes

Shi, Teng; Jackson, Howard E; Smith, Leigh M; Jiang, Nian; Gao, Qiang; Tan, Hark Hoe; Jagadish, Chennupati; Zheng, Changlin; Etheridge, Joanne


We use low-temperature photoluminescence, photoluminescence excitation, and photoluminescence imaging spectroscopy to explore the optical and electronic properties of GaAs/AlGaAs quantum well tube (QWT) heterostructured nanowires (NWs). We find that GaAs QWTs with widths >5 nm have electronic states which are delocalized and continuous along the length of the NW. As the NW QWT width decreases from 5 to 1.5 nm, only a single electron state is bound to the well, and no optical excitations to a...[Show more]

CollectionsANU Research Publications
Date published: 2015-02-25
Type: Journal article
Source: Nano Letters
DOI: 10.1021/nl5046878


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