›› 2012, Vol. 25 ›› Issue (8): 77-.

• Articles • Previous Articles     Next Articles

Study of High Aspect Ratio Silicon Trench Etching Based on ICP

 ZHAN Ming-Hao, SONG Tong-Jing, HUANG Hua, WANG Wen-Jing, CHEN Bo   

  1. (1.School of Electronic Science and Applied Physics,Hefei University of Technology,Hefei 230009,China;
    2.First Department of Techniques,No.214 Institute of Chinese Ordnance Industry,Bengbu 233042,China)
  • Online:2012-08-15 Published:2012-08-28

Abstract:

This paper introduces the basic concepts of the inductively coupled plasma (ICP) etching technique.On the basis of the STS multiplex ICP system etching machine,it describes the principle of the etching machine and the etching process.The silicon deep trench etching technology is analyzed.An optimization scheme is presented for such problems as footing effect,lag effect and sidewalls roughness.With lots of experiments,we have obtained the etching conditions for etching high aspect ratio silicon deep trench.

Key words: ICP etching;Footing effect;Lag effect;sidewall roughness;high aspect ratio

CLC Number: 

  • TN305.7