标题: | The role of resist for ultrathin gate oxide degradation during O-2 plasma ashing |
作者: | Chien, CH Chang, CY Lin, HC Chiou, SG Huang, TY Chang, TF Hsien, SK 电子工程学系及电子研究所 Department of Electronics Engineering and Institute of Electronics |
公开日期: | 1-五月-1997 |
摘要: | During ashing process, resist has been intuitively regarded as a protection layer and deliberately removed in previous studies by wet process prior to plasma exposure in an effort to amplify the damage effect, Recently, we found instead that resist does not simply act as a protection layer, This newly observed phenomenon cannot be explained by the well-known electron shading effect which should not affect the area-intensive antenna structure used in our study, In this letter, we hypothesize that this resist-related charging damage is determined by the plasma potential adjustment difference between those devices with and without resist overlayer, The experimental results show a good correlation with our explanation, To be specific, severe antenna area ratio (ARR) dependent degradation of thin gate oxide is induced during the initial ashing stage while the resist is still on the electrodes, not during the overashing period. |
URI: | http://dx.doi.org/10.1109/55.568764 http://hdl.handle.net/11536/589 |
ISSN: | 0741-3106 |
DOI: | 10.1109/55.568764 |
期刊: | IEEE ELECTRON DEVICE LETTERS |
Volume: | 18 |
Issue: | 5 |
起始页: | 203 |
结束页: | 205 |
显示于类别: | Articles |
文件中的档案:
If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.