在气相中,热电子附着于基烯酸
Bartosz Michalczuk1, Peter Papp2, Dušan Mészáros2
1Institute of Chemical Sciences, Faculty of Science, University of Siedlce, Siedlce, Poland.
Rapid communications in mass spectrometry : RCM
|August 24, 2024
概括
这项研究量化了等离子过程中使用的关键西兰衍生物的电子附着率系数和激活能量. 这些发现对于模拟和控制电子设备制造中的等离子体行为至关重要.
科学领域:
- 等离子体科学与技术等离子体科学与技术
- 材料科学 材料科学 材料科学
- 化学物理 化学物理
背景情况:
- 在电子设备制造 (照明,太阳能电池,显示器) 的工业等离子体工艺中,Silane衍生品至关重要.
- 准确的关于电子与西兰相互作用的定量数据对于有效的等离子模型是必不可少的.
- 了解电子附着动力学可以为流程优化和材料属性控制提供信息.
研究的目的:
- 为了确定热电子附着到特定的西兰衍生物的速率系数 (k) 和激活能 (Ea):Si2Cl6,Si(CH3) 3CHF2和SiCl ((CH3) 2Si ((CH3) 3) 3.3.3.
- 为前所未有的化合物提供新的动力学数据.
- 分析和讨论与其他西兰衍生物相比获得的结果.
主要方法:
- 利用脉冲塔恩森德技术测量电子附着参数.
- 在电场下使用激光诱导的电子生成来监测电荷动态.
- 分析了电子捕获率和脉冲形状,以推断动力参数.
- 应用了G4方法来计算债券解离能 (BDE).
主要成果:
- 首次确定了热电子与Si2Cl6,Si(CH3) 3CHF2和SiCl(CH3) 2Si(CH3) 3.3.3连接的动力参数.
- 在298K的测量速率系数为2.17 × 10−9 cm3s−1 (Si2Cl6),2.01 × 10−12 cm3s−1 (Si(CH3) 3CHF2) 和8.05 × 10−12 cm3s−1 (SiCl(CH3) 2Si(CH3) 3).
- 确定的激活能:0.37 eV (Si2Cl6),0.29 eV (Si(CH3) 3CHF2),和0.21 eV (SiCl ((CH3) 2Si ((CH3) 3) 在298378 K.
结论:
- 这项研究提供了关键的新数据,关于化和化西兰体捕获电子的速率系数和激活能.
- 这些发现增强了对与西兰的基本热电子相互作用的理解.
- 这些数据对于控制等离子体中的反应性物种有价值,用于先进的技术应用.
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