کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
611449 880676 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption behavior of anionic polyelectrolyte for chemical mechanical polishing (CMP)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Adsorption behavior of anionic polyelectrolyte for chemical mechanical polishing (CMP)
چکیده انگلیسی

In this work, we investigated the adsorption characteristics of anionic polyelectrolytes, which are used in shallow trench isolation chemical mechanical polishing with ceria abrasives. Specifically, the adsorption isotherms and chain conformation of anionic polyelectrolytes were studied in order to elucidate the difference in removal rates of silicon dioxide (SiO2) and silicon nitride (Si3N4) layers and the high selectivity characteristics of ceria slurry. Adsorption isotherms, FT-IR spectroscopy and contact angle measurements revealed that the anionic polyelectrolyte additives had much better adsorption affinities for the Si3N4 surface than for the SiO2 surface. Moreover, blanket wafer polishing results were successfully correlated with the adsorption isotherms of polyelectrolytes on the oxide particle suspensions.

The selectivity of STI CMP is optimized by investigating adsorption behavior of anionic polyelectrolyte.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 319, Issue 1, 1 March 2008, Pages 48–52
نویسندگان
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