在蚀刻溶液中快速检测杂质颗粒,使用电喷差分流动性分析
Duraisamy Senthil Raja1, Ching-Hsin Lee1, Po-Yu Lai1
1Department of Chemical Engineering, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., 300044, Hsinchu City, Taiwan, ROC.
Talanta
|May 4, 2025
概括
一种新的电喷差移动性分析 (ES-DMA) 方法检测和量化半导体蚀刻溶液中的有机杂质颗粒. 这种技术通过识别微量污染物来提高早期质量控制,提高半导体制造产量.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 半导体加工化学品中的颗粒缺陷显著降低了产量和质量.
- 早期检测和去除像蚀刻剂这样的溶液中的杂质对于先进制造至关重要.
- 现有的方法难以检测和量化复杂化学矩阵中的特定有机杂质.
研究的目的:
- 开发和验证一种新的电喷差移动性分析 (ES-DMA) 方法.
- 为了能够对半导体蚀刻溶液中的特定有机杂质颗粒进行敏感的检测和量化.
- 通过早期污染物识别,提高半导体制造业的质量控制.
主要方法:
- 使用电喷气电离 (ES) 来从模拟蚀刻溶液中产生细小,均的液滴,有效地去除辅助溶剂.
- 采用差分移动性分析 (DMA) 来根据大小进行带电粒子的分离和检测.
- 应用ES-DMA来识别和量化模型有机杂质,如聚乙烯糖醇 (PEG100K) 和牛血清白蛋白 (BSA).
主要成果:
- 成功检测和量化了小于10nm的超细有机杂质颗粒.
- 为有机污染物达到10ppm的低检测极限.
- 即使存在高度的非挥发性溶液,如2重%的酸,也证明了有效的分析.
- 验证了该方法在复杂化学混合物中分离和分析特定有机杂质的能力.
结论:
- 该ES-DMA方法提供了一个强大的新工具,用于检测半导体加工化学品中的微量有机污染物.
- 这种技术显著提高了半导体制造早期质量控制的潜力.
- 在低度下识别特定有机杂质的能力有望提高整体产品质量和制造产量.
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