基于异质连接增强的CeO2核心外磨料,用于高效光辅助化学机械抛光
Ruiting Zheng1, Sainan Ma2, Jingwei Zhu1
1School of Materials Science and Engineering, Zhejiang University, Hangzhou City, Zhejiang Province 310058, China.
ACS applied materials & interfaces
|March 5, 2026
概括
这项研究引入了一种新的光辅助化学机械抛光 (PACMP) 方法,使用核心外磨料. 这种创新方法显著提高了材料去除率,并减少了玻璃和晶片抛光的表面粗度.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 纳米技术纳米技术
背景情况:
- 传统的化学机械抛光 (CMP) 由于传统磨料的化学活性有限而面临效率限制.
- 开发具有增强化学活性的磨料对于提高抛光性能至关重要.
研究的目的:
- 开发用于核心外磨料的摄影辅助在位Ce3+缩策略.
- 在CMP中调查Ce-doped SnO2 (CTO) 核心和La-doped CeO2 (LCO) (CTO@LCO) 磨料的性能.
- 阐明光辅助化学机械抛光 (PACMP) 背后的机制.
主要方法:
- 制造CTO@LCO核心外磨砂剂. 在CTO@LCO核心外磨砂剂的制造.
- 使用II型异质连接,以实现高效的光生成电子转移.
- 实验性表征和第一原则计算来分析带结构和异质接口.
主要成果:
- 在CTO@LCO磨料中,TFT-LCD玻璃的材料去除速率 (MRR) 为608nm/min,Si晶片的材料去除速率为315nm/min.
- 实现了玻璃的0.277nm和Si晶圆的0.190nm的降低表面粗度 (Ra).
- 在MRR方面超过129%和Ra方面超过45%的商业CeO磨砂剂.
结论:
- 照相辅助的现场Ce3+缩策略有效地增强了磨蚀性化学活性.
- 在超精密制造中,CTO@LCO核心外磨料在PACMP中表现出卓越的性能.
- 这项工作为开发用于先进CMP应用的化学激活磨料提供了新的途径.
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