Size-controlled, high optical quality ZnO nanowires grown using colloidal Au nanoparticles and ultra-small cluster catalysts
作者： M. F. Lynam , N.-J. Ke , S. J. Bradley , T. Nann , A. Neiman
DOI: 10.1063/1.5054355
关键词:
摘要: Size-controlled ZnO nanowires were grown by eclipse pulsed laser deposition using Au colloids and ultra-small (sub 2 nm) Au101 Au9 clusters as catalysts, tethered to c-plane sapphire substrates aminopropyltrimethoxysilane (APTMS). A strong correlation was observed between nanowire tip diameter catalyst size, with no apparent lower limit the size of nanoparticles able catalyze growth. All produced intense ultraviolet photoluminescence almost visible defect band emission that is commonly in ZnO-based materials, including nanowires. also quality (in terms decreasing exciton line widths surface-related emission) diameter, highest obtained atomically precise cluster used here catalysts for growth first time.
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