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US09076646B2 Plasma enhanced atomic layer deposition with pulsed plasma exposure 有权
等离子体增强原子层沉积与脉冲等离子体暴露

Plasma enhanced atomic layer deposition with pulsed plasma exposure
Abstract:
The embodiments herein focus on plasma enhanced atomic layer deposition (PEALD) processes using pulsed plasmas. While conventional PEALD processes use continuous wave plasmas during the plasma exposure/conversion operation, the embodiments herein utilize a pulsed plasma during this operation to achieve a film with high quality sidewalls. Because conventional PEALD techniques result in films having high quality at the bottom and top of a feature, but low quality on the sidewalls, this increased sidewall quality in the disclosed methods corresponds to a film that is overall more uniform in quality compared to that achieved with conventional continuous wave plasma techniques.
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