Abstract
SnO2/Sn nanocables have been grown on single-crystal Si substrates by metal catalyst assistedthermal evaporation of SnO powders. The morphologies and structures of theprepared nanocables were determined on the basis of field emission scanningelectron microscopy (FESEM), high-resolution transmission electron microscopy(HRTEM), x-ray diffraction (XRD), Raman and photoluminescence (PL) spectraanalyses. The microstructures and compositions of the top and bottom regions of theSnO2/Sn nanocables were identified by HRTEM in detail, which revealed somebasic physical and chemical processes involved in the formation of thenanocables. A growth model was proposed to address the formation ofSnO2/Sn nanocables on the basis of the vapour–liquid–solid (VLS) process.
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