Study on Adhesion Removal Model in CMP SiO2 ILD

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Abstract:

In the process of CMP SiO2 ILD, the nano-particle with high surface energy in slurry has an essential impact on the efficiency and quality of CMP. In this paper the mode of nano-particle on the surface of SiO2 ILD is analysed and adhesion removal model corresponding to that is established. Through cycle polishing experiments, the change of nano-particle size and the state of particle surface before and after polishing is observed with TEM and Zeta potential analyzer, based on which the adhesion removal model is verified.

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Key Engineering Materials (Volumes 389-390)

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475-480

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September 2008

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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