随机顺序吸附对前体包装和原子层沉积过程每周期增长的后果
I Tezsevin1, J H Deijkers1, M J M Merkx1
1Department of Applied Physics and Science Education, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
The journal of physical chemistry letters
|July 16, 2024
概括
随机序列吸附 (RSA) 在原子层沉积 (ALD) 中显著降低前体和,影响每周期增长 (GPC). 了解RSA对于优化ALD过程至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 表面科学是一门学科.
背景情况:
- 原子层沉积 (ALD) 依赖于表面有限的反应,以实现合规薄膜生长.
- 前体吸附通常被认为遵循理想的包装模型,忽视随机吸附效应.
研究的目的:
- 研究随机顺序吸附 (RSA) 对ALD前体和覆盖率的影响.
- 分析RSA对ALD过程每周期增长 (GPC) 的后续影响.
主要方法:
- 利用计算模拟在RSA条件下模拟前体吸附.
- 将模拟结果与有序包装模型和实验数据进行比较.
主要成果:
- 与订购包装相比,RSA模拟显示表面前体密度减少了22%至40%.
- 使用RSA估计的GPC值显示高准确度 (平均0.05 Å) 与文献实验数据相比.
结论:
- 随机顺序吸附 (RSA) 是ALD的一个关键,经常被忽视的机制.
- 将RSA纳入模型提供了更准确的ALD GPC预测,并有助于过程优化.
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