Silicon columnar microstructures induced by an SF6/O2 plasma

被引:76
|
作者
Dussart, R [1 ]
Mellhaoui, X [1 ]
Tillocher, T [1 ]
Lefaucheux, P [1 ]
Volatier, M [1 ]
Socquet-Clerc, C [1 ]
Brault, P [1 ]
Ranson, P [1 ]
机构
[1] Univ Orleans, GREMI, F-45067 Orleans, France
关键词
D O I
10.1088/0022-3727/38/18/012
中图分类号
O59 [应用物理学];
学科分类号
摘要
An inductively coupled SF6/O-2 plasma is used to form a columnar microstructure (CMS) on silicon samples cooled at very low temperature (similar to -100 degrees C). The formation of this CMS is studied as a function of bias voltage, temperature, RF power and gas pressure. The characteristic mean diameter and mean height of the microstructure are evaluated by image processing tools from SEM micrographs. A crystallographic effect is also observed at very low temperature, which induces a needle-shaped structure. A physical mechanism is proposed to explain the formation of this CMS.
引用
收藏
页码:3395 / 3402
页数:8
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