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硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (8): 2876-2881.DOI: 10.16552/j.cnki.issn1001-1625.2026.0173

• 陶瓷 • 上一篇    下一篇

基于Fe3O4/CeO2光催化芬顿反应的碳化硅晶圆化学机械抛光浆料及其作用机理研究

李旺阳(), 吕功, 王凯悦()   

  1. 太原科技大学材料科学与工程学院,太原 030024
  • 收稿日期:2026-02-25 修订日期:2026-03-24 出版日期:2026-08-15 发布日期:2026-09-01
  • 通信作者: 王凯悦,博士,教授。E-mail:wangkaiyue8@163.com
  • 作者简介:李旺阳(2000—),男,硕士研究生。主要从事碳化硅化学机械抛光方面的研究。E-mail:liwy1228@163.com
  • 基金资助:
    山西省重点研发计划项目(202402030201003);山西省科技重大专项“揭榜挂帅”项目(202301030201001)

Fe3O4/CeO2 Photocatalytic Fenton Reaction-Based Chemical Mechanical Polishing Slurry for Silicon Carbide Wafers and Its Mechanism

LI Wangyang(), LYU Gong, WANG Kaiyue()   

  1. School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China
  • Received:2026-02-25 Revised:2026-03-24 Published:2026-08-15 Online:2026-09-01

摘要:

碳化硅(SiC)晶圆在航空航天、5G通信等领域应用广泛。化学机械抛光(CMP)是实现SiC晶圆超光滑表面的主要方法。然而,现有化学机械抛光浆料存在合成工艺复杂、成本高等问题。本研究通过构建Fe3O4/CeO2光催化芬顿反应体系,开发了一种适用于SiC晶圆C面的高效化学机械抛光工艺。XPS价态分析结果表明,体系表面Fe3+/Fe2+之间形成的电子转移循环可有效促进羟基自由基的持续生成,进而增强对SiC表面的氧化作用。优化结果显示,光催化抛光浆料的材料去除率达到1 068 nm/h,抛光后表面粗糙度降低至0.2 nm。研究结果为SiC材料的高效、绿色超精密加工提供了新的思路。

关键词: 碳化硅, 四氧化三铁, 氧化铈, 芬顿反应, 化学机械抛光, 光催化

Abstract:

Silicon carbide (SiC) wafers, owing to their excellent physicochemical properties, are widely used in aerospace, 5G communications, and other fields. Chemical mechanical polishing (CMP) is an important method for achieving an ultra-smooth surface on SiC wafers. However, conventional polishing slurries still have drawbacks such as complex synthesis processes and high application costs. To address these issues, this study developed a Fe3O4/CeO2 photocatalytic Fenton reaction system and an efficient CMP process suitable for the C-face of SiC wafers. SEM and AFM characterization results show that, after treatment with the photocatalytic polishing slurry, the surface quality of SiC is significantly improved, yielding an ultra-smooth surface. XPS valence-state analysis reveals that the electron transfer cycle formed between Fe3+/Fe2+ on the catalyst surface effectively promotes the continuous generation of hydroxyl radicals, thereby enhancing the oxidation of the SiC surface. Optimization results show that the material removal rate of the photocatalytic polishing slurry reaches 1 068 nm/h, while the surface roughness after polishing is reduced to 0.2 nm. These findings provide a new approach to the efficient, green, and ultra-precision machining of SiC materials.

Key words: SiC, Fe3O4, CeO2, Fenton reaction, chemical mechanical polishing, photocatalyst

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