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Metal Slot Color Filter Based on Thin Air Slots on Silver Block Array

Department of Physics, Chung-Ang University, Seoul 06974, Korea
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Nanomaterials 2019, 9(6), 912; https://doi.org/10.3390/nano9060912
Received: 23 May 2019 / Revised: 17 June 2019 / Accepted: 21 June 2019 / Published: 25 June 2019
(This article belongs to the Special Issue Plasmonic Nanostructures and Related Applications)
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Abstract

The human eye perceives the color of visible light depending on the spectrum of the incident light. Hence, the ability of color expression is very important in display devices. For practical applications, the transmitted color filter requires high transmittance and vivid colors, covering full standard default color spaces (sRGB). In this paper, we propose a color filter with a silver block array on a silica substrate structure with nanoscale air slots where strong transmission is observed through the slots between silver blocks. We investigated the transmitted color by simulating the transmission spectra as functions of various structure parameters. The proposed structure with an extremely small pixel size of less than 300 nm covers 90% of sRGB color depending on the structure and has a narrow angular distribution of transmitted light. View Full-Text
Keywords: color filter; metal block; air slots; slot transmission color filter; metal block; air slots; slot transmission
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kim, Y.; Moon, K.; Lee, Y.J.; Hong, S.; Kwon, S.-H. Metal Slot Color Filter Based on Thin Air Slots on Silver Block Array. Nanomaterials 2019, 9, 912.

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