Jiang, Nian; Parkinson, Patrick; Gao, Qiang; Wong-Leung, Yin-Yin (Jennifer); Breuer, Steffan; Tan, Hoe Hark; Jagadish, Chennupati
GaAs/AlxGa1-xAs core-shell nanowires were grown by metal organic chemical vapour deposition with Au-catalysed GaAs cores. Cross-section transmission electron microscope bright field images show that the tapering at bottom of the nanowires is mainly caused by GaAs cap growth. Time-resolved photo-luminescence measurements of single nanowires were taken at room temperature and a minority carrier lifetime of (1.02±0.43) ns was obtained for single nanowires with AlxGa1-xAs shell grown at 750°C. A...[Show more]
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