Anisotropic Electrical Properties from Vapor鈥揝olid鈥揝olid Grown Bi2Se3 Nanoribbons and Nanowires

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• 作者：Yichao Zou ; Zhi-Gang Chen ; Yang Huang ; Lei Yang ; John Drennan ; Jin Zou
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：September 4, 2014
• 年：2014
• 卷：118
• 期：35
• 页码：20620-20626
• 全文大小：434K
• ISSN：1932-7455

文摘

High-quality Bi₂Se₃ nanoribbons and nanowires were synthesized by a Au-catalyzed chemical vapor deposition method. Detailed structural and chemical characterizations using scanning and transmission electron microscopy show that the growth of both Bi₂Se₃ nanoribbons and nanowires is governed by the vapor鈥搒olid鈥搒olid growth mechanism, and the nanoribbons grow along 鉄?12虆0鉄?and nanowires grow along 鉄?001鉄?directions. Detailed in situ scanning tunneling microscope鈥搕ransmission electron microscopy electrical measurements show that the nanoribbons are much more conductive than the nanowires with a conductivity anisotropy ratio of 鈭?.5 脳 10² at room temperature.