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China Surfactant Detergent & Cosmetics ›› 2023, Vol. 53 ›› Issue (2): 210-219.doi: 10.3969/j.issn.1001-1803.2023.02.012

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Preparation of SiO2 antireflective coatings by sol-gel method

Jing Ximing,Sheng Yonggang()   

  1. College of Science, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, China
  • Received:2022-03-11 Revised:2023-01-31 Online:2023-02-22 Published:2023-02-23
  • Contact: Yonggang Sheng E-mail:yygara@qq.com

Abstract:

Antireflection film (antireflective coating) has been widely used in military applications, daily life, industry, etc., especially in high-energy laser systems (one of the most important technologies for inertial confinement fusion). In this paper, the optical principle of antireflective coating was analyzed, and the characteristics of its common manufacturing material silica (SiO2) were introduced. The principle and unique advantages of the antireflective coating prepared by the sol-gel method were described. The process of sol-gel plating antireflective coating was described. The precursor SiO2 sol was prepared by reaction, and then the antireflective coating was made by dip coating, spin coating, spraying, and coating. Various chemical reactions in the precursor sol were analyzed. The effects of various factors of reactions on the SiO2 material and the antireflective coating prepared from it were analyzed. Finally, the new research progress in the preparation of antireflective coatings by sol-gel method was reviewed, such as adding additives to the sol, modifying the materials to be coated, and combining with other methods to prepare the antireflective coatings. The antireflective coatings prepared by those methods not only enhance the optical properties of the film but also have functions such as self-cleaning function. Their wide applications in a variety of cutting-edge fields of technology, e.g., in photovoltaic industry, LED lighting, etc., were also prospected.

Key words: sol-gel, nanotechnology, silica, chemical process, antireflective coating

CLC Number: 

  • O648.16