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Semiconductor nanowire (NW) heterostructures are increasingly important building blocks for electronic and optoelectronic devices. III-V nanowires with attention to well-controlled growth parameters, high structural quality and high optical quality NWs with unusually long recombination lifetimes can be achieved. We probe these NWs experimentally with both CW and time-resolved photoluminescence spectroscopy...
We investigate how growth parameters may be chosen to obtain high quality GaAs nanowires suitable for optoelectronic device applications. Growth temperature and precursor flows have a significant effect on the morphology, crystallographic quality, intrinsic doping and optical properties of the resulting nanowires. Significantly, we find that low growth temperature and high arsine flow rate improve...
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