Photoluminescence performance of SiC nanowires, whiskers and agglomerated nanoparticles synthesized from activated carbon

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• Affiliation of Author(s):材料科学与工程学院
• Journal:Physica E: Low-dimensional Systems and Nanostructures
• Key Words:中文关键字：碳化物；蒸发；电子显微术；发光，英文关键字：Carbides;Evaporation;Electron microscopy;Luminesce
• Abstract:Highly uniform silicon carbide (SiC) nanowires, whiskers and agglomerated nanoparticles with nanostructures were synthesized when SiC nanowires were prepared using activated carbon. The three kinds of nanostructures experienced the same preparation process and the post-treatment process. They are perfect candidates to study the morphology effect of SiC on their optical properties. The three nanostructures, which were different from previous reports, are of the same structural defect state and, hence, similar photoluminescence properties. Large blueshifts of strong light emission to all the asreceived nanostructures appeared, which were mainly attributed to abundant structure defects and little to the quantum size effect. The diffusion growth mechanism of carbon atoms is proposed to interpret the synthesis process in the absence of oxygen-containing gases and catalysts.
• Note:SCI收录
• Co-author:李克智,李贺军,欧阳海波,李正佳,王闯
• First Author:Wei Jian
• Indexed by:Journal paper
• Volume:卷：41
• Issue:期：8
• Page Number:页：1616-1620
• Translation or Not:no
• Date of Publication:2009-08-01