发明授权
US5525551A Method for forming insulating film in semiconductor device using a TEOS
or HMDS pre-treatment
失效
使用TEOS或HMDS预处理在半导体器件中形成绝缘膜的方法
- 专利标题: Method for forming insulating film in semiconductor device using a TEOS or HMDS pre-treatment
- 专利标题(中): 使用TEOS或HMDS预处理在半导体器件中形成绝缘膜的方法
-
申请号: US255727申请日: 1994-06-07
-
公开(公告)号: US5525551A公开(公告)日: 1996-06-11
- 发明人: Hiroyuki Ohta
- 申请人: Hiroyuki Ohta
- 申请人地址: JPX Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JPX Kawasaki
- 优先权: JPX5-233800 19930920
- 主分类号: H01L21/316
- IPC分类号: H01L21/316 ; H01L21/318 ; H01L21/205
摘要:
The present invention relates to a method for forming a silicon oxide film on a substrate by the thermal chemical vapor deposition method (thermal CVD method) using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate (TEOS). It is an object of the present invention to provide a method for forming an insulating film in a semiconductor device, in which anomalous deposition of the film at a step portion (a portion of difference in level) is prevented and the film contains less moisture and less organic matter and is superior in smoothness. The present invention includes the steps of exposing the depositing surface of the substrate 14 to tetraethoxyorthosilicate in the absence of oxygen and ozone at the elevated temperature and forming an oxide film 15 on the substrate 14 by the thermal CVD method using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate at a deposition temperature. In a second embodiment HMDS is substituted for TEOS in the pretreatment step.
公开/授权文献
信息查询
IPC分类: