Formation and properties of one-dimensional nanostructures composed of germanium/silicon and germanium

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04606
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials chemistry
• Research Institution: Mie University
• Principal Investigator: Kokai Fumio 三重大学, 工学研究科, 教授 (40345997)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ナノワイヤー / ナノチューブ / ケイ素 / ゲルマニウム / 二酸化ケイ素

Outline of Final Research Achievements

One dimensional nanostructures composed of silicon and germanium are of interest as anode materials of next-generation lithium ion batteries. We performed continuous-wave laser vaporization of germanium/silicon source targets in high-pressure argon gas atmosphere to grow one dimensional nanostructures. Nanotubes and nanowires of silicon-oxide and germanium-silicon-oxide core-shell nanowires were formed depending on the compositions of the targets and the argon pressure. We suggest vapor-liquid-solid mechanisms to grow the nanotubes and nanowires where molten nanoparticles of germanium and silicon act as seeds at high temperature with the contribution of residual oxygen gas.

Free Research Field

物理化学