ZrO₂-DSS의 CMP 특성에 관한 연구

Chemical mechanical polishing (CMP) technology has been widely used for global planarization of multi-level interconnection for ULSI applications. However, the cost of ownership and cost of consumables are relatively high because of expensive slurry, In this paper, in order to save the costs of slurry, the original silica slurry was diluted by de-ionized water (DIW). And then, ZrO₂ abrasives were added in the diluted silica slurry (DSS) in order to promote the mechanical force of diluted slurry. We have also investigate the possibility of mixed abrasive slurry (MAS) for the oxide CMP application.