Enhanced Nickel-Seeded Synthesis of Germanium Nanowires
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- 作者：Xiaotang Lu ; Justin T. Harris ; Juli谩n E. Villarreal ; Aaron M. Chockla ; Brian A. Korgel
- 刊名：Chemistry of Materials
- 出版年：2013
- 出版时间：May 28, 2013
- 年：2013
- 卷：25
- 期：10
- 页码：2172-2177
- 全文大小：443K
- 年卷期：v.25,no.10(May 28, 2013)
- ISSN：1520-5002
文摘
Germanium (Ge) nanowires can be grown using either gold (Au) or nickel (Ni) seeds in a supercritical solvent; however, the quality and yield of the nanowires is much higher using Au seeds and diphenyl germane (DPG) as a reactant under typical reaction conditions. We find that the addition of monophenylsilane (MPS) dramatically improves the yield and quality of Ni-seeded Ge nanowires, producing straight nanowires with relatively uniform diameter and nearly 100% conversion of DPG to Ge. MPS participates in the phenyl redistribution reaction of DPG and serves as a phenyl sink that speeds DPG decomposition and increases the conversion to Ge to nearly 100%. MPS addition to Au-seeded nanowire reactions also increases the DPG conversion to Ge to nearly 100% and improves the nanowire quality at higher growth temperature.