Etching high aspect ratio silicon trenches

被引:0
|
作者
Panda, S [1 ]
Ranade, R [1 ]
Mathad, GS [1 ]
机构
[1] IBM Microelect, Semicond Res & Dev Ctr, Hopewell Jct, NY 12533 USA
来源
PLASMA PROCESSING XIV | 2002年 / 2002卷 / 17期
关键词
D O I
暂无
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
High aspect ratio trenches are necessary to achieve target values of capacitance in the fabrication of charge storage capacitors in DRAM devices. Etching of high aspect ratio trenches suffers from a RIE lag mechanism, due to reduced energy of ions and etching species at the bottom of a deep trench. In this paper, two methods are proposed to minimize these problems and thereby achieve higher silicon etch rates and deeper trenches.
引用
收藏
页码:210 / 217
页数:8
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