We report the self-assembly of core-shell GeTe/Sb2Te3 nanowires (NWs) on Si (100), and SiO2/Si substrates by metalorganic chemical vapour deposition, coupled to the vapour-liquid-solid mechanism, catalyzed by Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission electron microscopy, and electron energy loss spectroscopy were employed to investigate the morphology, structure, and composition of the obtained core and core-shell NWs. A single crystalline GeTe core and a polycrystalline Sb2Te3 shell formed the NWs, having core and core-shell diameters in the range of 50-130 nm and an average length up to 7 mu m.
Kumar, A., Cecchini, R., Wiemer, C., Mussi, V., De Simone, S., Calarco, R., et al. (2021). MOCVD Growth of GeTe/Sb2Te3 Core–Shell Nanowires. COATINGS, 11(6) [10.3390/coatings11060718].
MOCVD Growth of GeTe/Sb2Te3 Core–Shell Nanowires
Massimo Longo
2021-01-01
Abstract
We report the self-assembly of core-shell GeTe/Sb2Te3 nanowires (NWs) on Si (100), and SiO2/Si substrates by metalorganic chemical vapour deposition, coupled to the vapour-liquid-solid mechanism, catalyzed by Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission electron microscopy, and electron energy loss spectroscopy were employed to investigate the morphology, structure, and composition of the obtained core and core-shell NWs. A single crystalline GeTe core and a polycrystalline Sb2Te3 shell formed the NWs, having core and core-shell diameters in the range of 50-130 nm and an average length up to 7 mu m.| File | Dimensione | Formato | |
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