Is there a thermodynamic size limit of nanowires grown by the vapor-liquid-solid process?

被引：53

作者：

Tan, TY ^{[1
]}

Li, N ^{[1
]}

Gösele, U ^{[1
]}

机构：

[1] Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 06期

关键词：

D O I：

10.1063/1.1599984

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

For nanowires grown by the vapor-liquid-solid (VLS) process, expressions of the thermodynamically allowed minimum sizes of the wire and the liquid droplet are derived using Si nanowires (SiNW) grown from metal-silicon (M-Si) liquid as the model case. The liquid droplet minimum size is determined by a unique set of external M and Si vapor phase pressure values. The SiNW minimum size expression contains two contributions, one depending on composition of the liquid and one depending on the droplet size. These expressions do not predict a limit on the attainable VLS SiNW minimum size, implying ever smaller SiNW can be grown until reaching some growth kinetic limit which is presently unknown. (C) 2003 American Institute of Physics.

引用

页码：1199 / 1201

页数：3

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