期刊
SURFACE & COATINGS TECHNOLOGY
卷 297, 期 -, 页码 1-10出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2016.04.034
关键词
Silicon-nitride; Thin film; Multi-model; Simulation; Plasma enhanced chemical vapor deposition
资金
- National Science and Technology Major Project of the MOST, China [02, 2011ZX02403]
Plasma enhanced vapor deposition is a complex multi-physics process which couples plasma dynamics, chemical reactions, fluid dynamics, heat, and mass transfer. The structure of a reactor has significant effects on the process performance. In order to simulate the behaviors of silicon-nitride thin-film processing in a 300 mm reactor with a vertical showerhead, a comprehensive multi-model framework is developed to deal with the multi-physics phenomena in the entire reactor. Full-wafer deposition rate and ratio of nitrogen to silicon are compared between model and experiment to verify the multi-model simulation. The experiments are carried out with different showerhead configurations but the same process recipe, and the mechanisms of the thin-film profiles are analyzed based on the models. The results indicate that the spatial gradients of deposition rate and ratio of nitrogen to silicon are determined by the hole configurations on the showerhead. (C) 2016 Elsevier B.V. All rights reserved.
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