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 vapour–liquid–solid mechanism, catalyzed Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission energy loss spectroscopy were employed investigate morphology, structure, comp...

Abstract In this note, we demonstrate direct high-temperature growth of single-crystalline GaN on c -plane ScAlMgO 4 substrates by metalorganic chemical vapor deposition, without using low-temperature buffers. We found that a trimethylaluminium preflow was crucial to suppress island and achieve uniform mirror-like Ga-polar layers. The time have impact the crystalline quality GaN. also show thin...

Abstract Regarding deep-ultraviolet optical device applications, face-to-face annealed sputter-deposited AlN (FFA Sp-AlN) is a promising alternative to the conventional metalorganic vapor phase epitaxy (MOVPE)-prepared templates on sapphire substrates. However, FFA Sp-AlN tends exhibit AlGaN growth-related hillock generation and surface morphology deterioration. In this study, we optimized sput...