期刊
APPLIED PHYSICS LETTERS
卷 97, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3474605
关键词
nanowires; oxygen; tin compounds; vapour deposition
资金
- Ministry of Education, Culture Sports, Science and Technology (MEXT) of Japan [20111004]
- FIRST program
The ability to control oxide nanowires via vapor-liquid-solid (VLS) mechanism remains an important challenge to explore various applications of oxide nanowires. Here we demonstrate the crucial roles of surrounding oxygen on VLS grown SnO(2) nanowires. When the partial pressure of surrounding oxygen is relatively low, the oxygen mainly acts as an oxygen source, promoting VLS growth. While for relatively high oxygen partial pressures, vapor-solid (VS) growth emerges, suppressing nanowire growth. The findings as to the roles of surrounding oxygen on the inherent competition between VLS and VS growths are in principle rather universal for VLS grown nanowires of various oxides. (C) 2010 American Institute of Physics. [doi:10.1063/1.3474605]
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