4.6 Article

Broadband Anti-Reflection Coatings Fabricated by Precise Time-Controlled and Oblique-Angle Deposition Methods

期刊

COATINGS
卷 11, 期 5, 页码 -

出版社

MDPI
DOI: 10.3390/coatings11050492

关键词

antireflection coating; broadband; oblique angle deposition; precise time controlled deposition

资金

  1. National Natural Science Foundation of China [61905238, 61705226]
  2. Instrument Developing Project of the Chinese Academy of Sciences [YJKYYQ20180067]

向作者/读者索取更多资源

A hybrid-structured, anti-reflection coating was developed in this study, combining multi-layer thin films with a single top-oblique deposited layer to enhance photocurrent generation of photovoltaic modules and visibility in optical devices. By introducing a low-refractive index layer, the broadband anti-reflection properties of optical thin films can be improved while simplifying preparation methods.
Broadband anti-reflection (AR) coatings are essential elements for improving the photocurrent generation of photovoltaic modules and enhancing visibility in optical devices. In this paper, we report a hybrid-structured, anti-reflection coating that combines multi-layer thin films with a single top-oblique deposited layer. By simply introducing this low-refractive index layer, the broadband anti-reflection properties of optical thin films can be improved while simplifying the preparation. Precise time-controlled and oblique-angle deposition (OAD) methods were used to fabricate the broadband AR coating. By accurately measuring and adjusting the design errors for the thin and thick film layers, 22-layer and 36-layer AR coatings on a sapphire substrate with a 400-2000 nm wideband were obtained. This bottom-up preparation process and AR coating design have the potential to significantly enhance the broadband antireflective properties for many optical systems and reduce the manufacturing cost of broadband AR coatings.

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