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Article: Subwavelength pixelated CMOS color sensors based on anti-Hermitian metasurface

TitleSubwavelength pixelated CMOS color sensors based on anti-Hermitian metasurface
Authors
Issue Date2020
PublisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2020, v. 11, p. article no. 3916 How to Cite?
AbstractThe demand for essential pixel components with ever-decreasing size and enhanced performance is central to current optoelectronic applications, including imaging, sensing, photovoltaics and communications. The size of the pixels, however, are severely limited by the fundamental constraints of lightwave diffraction. Current development using transmissive filters and planar absorbing layers can shrink the pixel size, yet there are two major issues, optical and electrical crosstalk, that need to be addressed when the pixel dimension approaches wavelength scale. All these fundamental constraints preclude the continual reduction of pixel dimensions and enhanced performance. Here we demonstrate subwavelength scale color pixels in a CMOS compatible platform based on anti-Hermitian metasurfaces. In stark contrast to conventional pixels, spectral filtering is achieved through structural color rather than transmissive filters leading to simultaneously high color purity and quantum efficiency. As a result, this subwavelength anti-Hermitian metasurface sensor, over 28,000 pixels, is able to sort three colors over a 100 nm bandwidth in the visible regime, independently of the polarization of normally-incident light. Furthermore, the quantum yield approaches that of commercial silicon photodiodes, with a responsivity exceeding 0.25 A/W for each channel. Our demonstration opens a new door to sub-wavelength pixelated CMOS sensors and promises future high-performance optoelectronic systems.
Persistent Identifierhttp://hdl.handle.net/10722/307951
ISSN
2023 Impact Factor: 14.7
2023 SCImago Journal Rankings: 4.887
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSmalley, JST-
dc.contributor.authorRen, X-
dc.contributor.authorLee, JY-
dc.contributor.authorKo, W-
dc.contributor.authorJoo, WJ-
dc.contributor.authorPark, H-
dc.contributor.authorYang, SUI-
dc.contributor.authorWang, Y-
dc.contributor.authorLee, CS-
dc.contributor.authorChoo, H-
dc.contributor.authorHwang, S-
dc.contributor.authorZhang, X-
dc.date.accessioned2021-11-12T13:40:17Z-
dc.date.available2021-11-12T13:40:17Z-
dc.date.issued2020-
dc.identifier.citationNature Communications, 2020, v. 11, p. article no. 3916-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/307951-
dc.description.abstractThe demand for essential pixel components with ever-decreasing size and enhanced performance is central to current optoelectronic applications, including imaging, sensing, photovoltaics and communications. The size of the pixels, however, are severely limited by the fundamental constraints of lightwave diffraction. Current development using transmissive filters and planar absorbing layers can shrink the pixel size, yet there are two major issues, optical and electrical crosstalk, that need to be addressed when the pixel dimension approaches wavelength scale. All these fundamental constraints preclude the continual reduction of pixel dimensions and enhanced performance. Here we demonstrate subwavelength scale color pixels in a CMOS compatible platform based on anti-Hermitian metasurfaces. In stark contrast to conventional pixels, spectral filtering is achieved through structural color rather than transmissive filters leading to simultaneously high color purity and quantum efficiency. As a result, this subwavelength anti-Hermitian metasurface sensor, over 28,000 pixels, is able to sort three colors over a 100 nm bandwidth in the visible regime, independently of the polarization of normally-incident light. Furthermore, the quantum yield approaches that of commercial silicon photodiodes, with a responsivity exceeding 0.25 A/W for each channel. Our demonstration opens a new door to sub-wavelength pixelated CMOS sensors and promises future high-performance optoelectronic systems.-
dc.languageeng-
dc.publisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsNature Communications. Copyright © Nature Research: Fully open access journals.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleSubwavelength pixelated CMOS color sensors based on anti-Hermitian metasurface-
dc.typeArticle-
dc.identifier.emailZhang, X: president@hku.hk-
dc.identifier.authorityZhang, X=rp02411-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-020-17743-y-
dc.identifier.pmid32764547-
dc.identifier.pmcidPMC7413260-
dc.identifier.scopuseid_2-s2.0-85089141474-
dc.identifier.hkuros329918-
dc.identifier.volume11-
dc.identifier.spagearticle no. 3916-
dc.identifier.epagearticle no. 3916-
dc.identifier.isiWOS:000561121600001-
dc.publisher.placeUnited Kingdom-

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