High-resolution photometric optical monitoring for thin-film deposition |
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Authors: | Rabady Rabi Zinoviev Kirill Avrutsky Ivan |
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Affiliation: | Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202-0000, USA. rrabady@wayne.edu |
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Abstract: | Real-time monitoring of thin-film deposition with high resolution is important for precise fabrication of thin-film devices in a technological environment with ever-increasing demands for smaller size and better performance. Using photometry, we were able to achieve a real-time optical monitoring resolution of film thickness that is comparable with a single atomic layer scale (i.e., subnanometer). Filtering noise efficiently and compensating for sources of error by use of an appropriate model produced this high resolution. The procedure proved reliable and can be useful in the thin-film-deposition industry. |
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