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人工晶体学报 ›› 2024, Vol. 53 ›› Issue (10): 1738-1744.

• 研究论文 • 上一篇    下一篇

VO2-SiO2复合薄膜的激光诱导损伤特性研究

韩笋, 李艳   

  1. 中国矿业大学材料与物理学院,徐州 221116
  • 收稿日期:2024-04-30 出版日期:2024-10-15 发布日期:2024-10-21
  • 通信作者: 李 艳,博士,高级实验师。E-mail:liyan@cumt.edu.cn
  • 作者简介:韩 笋(1999—),女,江苏省人,硕士研究生。E-mail:1910546111@qq.com
  • 基金资助:
    中国矿业大学教改项目(2023ZDKT05-210)

Laser-Induced Damage Characteristics of VO2-SiO2 Composite Films

HAN Sun, LI Yan   

  1. School of Materials and Physics, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2024-04-30 Online:2024-10-15 Published:2024-10-21

摘要: 本文采用溶胶-凝胶法制备了VO2和VO2-SiO2复合薄膜,并用X射线衍射仪(XRD)和紫外-可见分光光度计对薄膜的相结构和透过率进行了表征。结果表明,制备的VO2为单斜相(B),VO2-SiO2复合薄膜的XRD图谱和VO2类似,薄膜在450~800 nm的光学透过率达到了90%以上。激光诱导损伤阈值(LIDT)测试结果显示,VO2-SiO2复合薄膜的LIDT为3.9 J/cm2,相比VO2薄膜提高了77.3%。通过场发射扫描电子显微镜(FESEM)和台阶仪研究了VO2薄膜和VO2-SiO2复合薄膜的损伤形貌差异,VO2薄膜呈现出熔融型损伤,VO2-SiO2薄膜则呈现出熔融型损伤和应力型损伤的共同特征。此外,构建了不同薄膜的激光诱导损伤模型,揭示了相关损伤特性和内在机制。

关键词: VO2, SiO2, 溶胶-凝胶法, 光学透过率, 激光诱导损伤阈值, 损伤特性

Abstract: The VO2 and VO2-SiO2 composite films were prepared by sol-gel method. The phase structure and transmittance of films were characterized by X-ray diffraction (XRD) and ultraviolet visible spectrophotometer. The results reveal that the prepared VO2 film is monoclinic phase (B), and the XRD patterns of VO2-SiO2 composite film is similar to that of VO2 film. The optical transmittance of films have reached over 90% within the range of 450 nm to 800 nm. The laser induced damage threshold (LIDT) of VO2-SiO2 composite film is 3.9 J/cm2, which is 77.3% higher than that of VO2 film. The difference in damage morphology between VO2 film and VO2-SiO2 film were studied by FESEM and step analyzer. The VO2 film exhibits melt type damage, while the VO2-SiO2 film exhibits melt type damage and stress damage. In addition, laser-induced damage models for different films were constructed and damage characteristics and underlying mechanisms were discussed.

Key words: VO2, SiO2, sol-gel method, optical transmittance, LIDT, damage characteristic

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