Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters

Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters

We propose a design of angle-insensitive and polarization-independent reflective color filters with high efficiency (>80%) based on broad resonance in a Fabry–Pérot cavity where asymmetric metal-dielectric-metal planar structures are employed. Broadband absorption propertie...

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Main Authors: Kyu-Tae Lee, Daeshik Kang, Hui Joon Park, Dong Hyuk Park, Seungyong Han
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Materials
Subjects:
absorbers
structural colors
resonators
Fabry–Pérot
Online Access:https://www.mdpi.com/1996-1944/12/7/1050
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spelling doaj-b066fa788b274bb68cfe7a3e7d5ab2602020-11-24T22:30:00ZengMDPI AGMaterials1996-19442019-03-01127105010.3390/ma12071050ma12071050Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color FiltersKyu-Tae Lee0Daeshik Kang1Hui Joon Park2Dong Hyuk Park3Seungyong Han4Department of Physics, Inha University, Incheon 22212, KoreaDepartment of Mechanical Engineering, Ajou University, San 5, Woncheon-Dong, Yeongtong-Gu, Suwon 16499, KoreaDepartment of Energy Systems Research, Ajou University, San 5, Woncheon-Dong, Yeongtong-Gu, Suwon 16499, KoreaDepartment of Chemical Engineering, Inha University, Incheon 22212, KoreaDepartment of Mechanical Engineering, Ajou University, San 5, Woncheon-Dong, Yeongtong-Gu, Suwon 16499, KoreaWe propose a design of angle-insensitive and polarization-independent reflective color filters with high efficiency (>80%) based on broad resonance in a Fabry–Pérot cavity where asymmetric metal-dielectric-metal planar structures are employed. Broadband absorption properties allow the resonance in the visible range to remain nearly constant over a broad range of incident angles of up to 40° for both s- and p-polarizations. Effects of the angles of incidence and polarization state of incident light on the purity of the resulting colors are examined on the CIE 1931 chromaticity diagram. In addition, higher-order resonances of the proposed color filters and their electric field distributions are investigated for improved color purity. Lastly, the spectral properties of the proposed structures with different metallic layers are studied. The simple strategy described in this work could be adopted in a variety of research areas, such as color decoration devices, microscopy, and colorimetric sensors.https://www.mdpi.com/1996-1944/12/7/1050absorbersstructural colorsresonatorsFabry–Pérot
collection DOAJ
language English
format Article
sources DOAJ
author Kyu-Tae Lee
Daeshik Kang
Hui Joon Park
Dong Hyuk Park
Seungyong Han
spellingShingle Kyu-Tae Lee
Daeshik Kang
Hui Joon Park
Dong Hyuk Park
Seungyong Han
Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
Materials
absorbers
structural colors
resonators
Fabry–Pérot
author_facet Kyu-Tae Lee
Daeshik Kang
Hui Joon Park
Dong Hyuk Park
Seungyong Han
author_sort Kyu-Tae Lee
title Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
title_short Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
title_full Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
title_fullStr Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
title_full_unstemmed Design of Polarization-Independent and Wide-Angle Broadband Absorbers for Highly Efficient Reflective Structural Color Filters
title_sort design of polarization-independent and wide-angle broadband absorbers for highly efficient reflective structural color filters
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2019-03-01
description We propose a design of angle-insensitive and polarization-independent reflective color filters with high efficiency (>80%) based on broad resonance in a Fabry–Pérot cavity where asymmetric metal-dielectric-metal planar structures are employed. Broadband absorption properties allow the resonance in the visible range to remain nearly constant over a broad range of incident angles of up to 40° for both s- and p-polarizations. Effects of the angles of incidence and polarization state of incident light on the purity of the resulting colors are examined on the CIE 1931 chromaticity diagram. In addition, higher-order resonances of the proposed color filters and their electric field distributions are investigated for improved color purity. Lastly, the spectral properties of the proposed structures with different metallic layers are studied. The simple strategy described in this work could be adopted in a variety of research areas, such as color decoration devices, microscopy, and colorimetric sensors.
topic absorbers
structural colors
resonators
Fabry–Pérot
url https://www.mdpi.com/1996-1944/12/7/1050
work_keys_str_mv AT kyutaelee designofpolarizationindependentandwideanglebroadbandabsorbersforhighlyefficientreflectivestructuralcolorfilters
AT daeshikkang designofpolarizationindependentandwideanglebroadbandabsorbersforhighlyefficientreflectivestructuralcolorfilters
AT huijoonpark designofpolarizationindependentandwideanglebroadbandabsorbersforhighlyefficientreflectivestructuralcolorfilters
AT donghyukpark designofpolarizationindependentandwideanglebroadbandabsorbersforhighlyefficientreflectivestructuralcolorfilters
AT seungyonghan designofpolarizationindependentandwideanglebroadbandabsorbersforhighlyefficientreflectivestructuralcolorfilters
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