发明授权
US08114773B2 Cleaning solution, cleaning method and damascene process using the same 有权
清洗方法,清洗方法和镶嵌工艺使用相同

Cleaning solution, cleaning method and damascene process using the same
摘要:
A cleaning solution is provided. The cleaning solution includes (a) 0.01-0.1 wt % of hydrofluoric acid (HF); (b) 1-5 wt % of a strong acid, wherein the strong acid is an inorganic acid; (c) 0.05-0.5 wt % of ammonium fluoride (NH4F); (d) a chelating agent containing a carboxylic group; (e) triethanolamine (TEA); (f) ethylenediaminetetraacetic acid (EDTA); and (g) water for balance.
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