22 September 2020 Multilayer for antireflection coating applications using metal nanoparticles to provide ultraviolet blocking
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Abstract

We propose the use of metal nanoparticles (NPs) [(silver (Ag)] embedded heterogeneous composite material made of titanium dioxide (TiO2) for antireflection coating (ARC) while partially blocking the transmission of near-ultraviolet (UV) radiation across the thin-film arrangement. The proposed structure consists of two layers of porous TiO2 thin film of specific thickness and volume fraction to attain antireflection property with Ag NPs embedded in the upper layer to optimize the UV blocking potentiality within the range of 320 to 400 nm. The calculations indicate that 10-nm Ag NPs with volume fraction of 0.01 and film thickness (51-nm top layer and 102-nm bottom layer) give the best results for blocking of near-UV radiation. Decreasing the aspect ratio of the prolate nanospheriod gives better UV blocking intensity.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 1934-2608/2020/$28.00 © 2020 SPIE
Sunil Deka and Waleed S. Mohammed "Multilayer for antireflection coating applications using metal nanoparticles to provide ultraviolet blocking," Journal of Nanophotonics 14(3), 036016 (22 September 2020). https://doi.org/10.1117/1.JNP.14.036016
Received: 5 June 2020; Accepted: 9 September 2020; Published: 22 September 2020
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KEYWORDS
Nanoparticles

Silver

Metals

Thin films

Ultraviolet radiation

Antireflective coatings

Absorption

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