A Novel Sb2Te3 Polymorph Stable at the Nanoscale

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• 作者：Enzo Rotunno ; Massimo Longo ; Claudia Wiemer ; Roberto Fallica ; Davide Campi ; Marco Bernasconi ; Andrew R. Lupini ; Stephen J. Pennycook ; Laura Lazzarini
• 刊名：Chemistry of Materials
• 出版年：2015
• 出版时间：June 23, 2015
• 年：2015
• 卷：27
• 期：12
• 页码：4368-4373
• 全文大小：351K
• ISSN：1520-5002

文摘

We report on the MOCVD synthesis of Sb₂Te₃ nanowires that self-assemble in a novel metastable polymorph. The nanowires crystallize in a primitive trigonal lattice (P3虆m1 SG #164) with lattice parameters a = b = 0.422 nm, and c = 1.06 nm. The stability of the polymorph has been studied by first principle calculations: it has been demonstrated that the stabilization is due to the particular side-wall faceting, finding excellent agreement with the experimental observations.