Miniaturizing color-sensitive photodetectors via hybrid nanoantennas toward submicrometer dimensions

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Abstract

Digital camera sensors use color filters on photodiodes to achieve color selectivity. As the color filters and photosensitive silicon layers are separate elements, these sensors suffer from optical cross-talk, which sets limits to the minimum pixel size. Here, we report hybrid silicon-aluminum nanostructures in the extreme limit of zero distance between color filters and sensors. This design could essentially achieve submicrometer pixel dimensions and minimize the optical cross-talk arising from tilt illuminations. The designed hybrid silicon-aluminum nanostructure has dual functionalities. Crucially, it supports a hybrid Mie-plasmon resonance of magnetic dipole to achieve color-selective light absorption, generating electron hole pairs. Simultaneously, the silicon-aluminum interface forms a Schottky barrier for charge separation and photodetection. This design potentially replaces the traditional dye-based filters for camera sensors at ultrahigh pixel densities with advanced functionalities in sensing polarization and directionality, and UV selectivity via interband plasmons of silicon.

Abstract

Nanostructured plasmon-Mie resonators render color sensitivity to silicon for next-generation CMOS sensors.

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Mark Knight, Heidar Sobhani, Peter Nordlander … (2011)

Nanoantennas are key optical components for light harvesting; photodiodes convert light into a current of electrons for photodetection. We show that these two distinct, independent functions can be combined into the same structure. Photons coupled into a metallic nanoantenna excite resonant plasmons, which decay into energetic, "hot" electrons injected over a potential barrier at the nanoantenna-semiconductor interface, resulting in a photocurrent. This dual-function structure is a highly compact, wavelength-resonant, and polarization-specific light detector, with a spectral response extending to energies well below the semiconductor band edge.

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Arseniy Kuznetsov, Andrey E. Miroshnichenko, Mark Brongersma … (2016)

Rapid progress in nanophotonics is driven by the ability of optically resonant nanostructures to enhance near-field effects controlling far-field scattering through intermodal interference. A majority of such effects are usually associated with plasmonic nanostructures. Recently, a new branch of nanophotonics has emerged that seeks to manipulate the strong, optically induced electric and magnetic Mie resonances in dielectric nanoparticles with high refractive index. In the design of optical nanoantennas and metasurfaces, dielectric nanoparticles offer the opportunity for reducing dissipative losses and achieving large resonant enhancement of both electric and magnetic fields. We review this rapidly developing field and demonstrate that the magnetic response of dielectric nanostructures can lead to novel physical effects and applications.

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Hatice Altug, Mingkai Liu, Aleksandrs Leitis … (2018)

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Author and article information

Contributors

Jinfa Ho:

ORCID: https://orcid.org/0000-0001-6884-4785

Role: ConceptualizationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ValidationRole: VisualizationRole: Writing - original draft

Zhaogang Dong:

ORCID: https://orcid.org/0000-0002-0929-7723

Role: ConceptualizationRole: Data curationRole: Formal analysisRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: ValidationRole: VisualizationRole: Writing - original draftRole: Writing - review & editing

Hai Sheng Leong: Role: InvestigationRole: SoftwareRole: Validation

Jun Zhang:

ORCID: https://orcid.org/0000-0001-6803-9399

Role: Investigation

Febiana Tjiptoharsono: Role: Investigation

Soroosh Daqiqeh Rezaei:

ORCID: https://orcid.org/0000-0002-9807-2074

Role: Formal analysisRole: SoftwareRole: VisualizationRole: Writing - original draft

Ken Choon Hwa Goh: Role: InvestigationRole: MethodologyRole: ResourcesRole: Writing - review & editing

Mengfei Wu:

ORCID: https://orcid.org/0000-0002-4728-3234

Role: InvestigationRole: Writing - review & editing

Shiqiang Li:

ORCID: https://orcid.org/0000-0002-4095-8606

Role: ConceptualizationRole: InvestigationRole: ValidationRole: Writing - original draftRole: Writing - review & editing

Jingyee Chee:

ORCID: https://orcid.org/0000-0002-4505-7196

Role: InvestigationRole: Methodology

Calvin Pei Yu Wong:

ORCID: https://orcid.org/0000-0002-3135-7534

Role: Formal analysisRole: MethodologyRole: ResourcesRole: VisualizationRole: Writing - review & editing

Arseniy I. Kuznetsov:

ORCID: https://orcid.org/0000-0002-7622-8939

Role: ConceptualizationRole: Funding acquisitionRole: MethodologyRole: Project administrationRole: SupervisionRole: Writing - review & editing

Joel K. W. Yang:

ORCID: https://orcid.org/0000-0003-3301-1040

Role: ConceptualizationRole: Data curationRole: Funding acquisitionRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: VisualizationRole: Writing - original draftRole: Writing - review & editing

Journal

Journal ID (nlm-ta): Sci Adv

Journal ID (iso-abbrev): Sci Adv

Journal ID (publisher-id): sciadv

Journal ID (hwp): advances

Title: Science Advances

Publisher: American Association for the Advancement of Science

ISSN (Electronic): 2375-2548

Publication date Collection: November 2022

Publication date (Electronic, pub): 23 November 2022

Volume: 8

Issue: 47

Electronic Location Identifier: eadd3868

Affiliations

[ ¹ ]Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-03 Innovis, 138634 Singapore, Singapore.

[ ² ]Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, 117575 Singapore, Singapore.

[ ³ ]Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore, Singapore.

Author notes

[* ]Corresponding author. Email: joel_yang@ 123456sutd.edu.sg (J.K.W.Y.); dongz@ 123456imre.a-star.edu.sg (Z.D.)

[†]

These authors contributed equally to this work.

Author information

Jinfa Ho https://orcid.org/0000-0001-6884-4785

Zhaogang Dong https://orcid.org/0000-0002-0929-7723

Jun Zhang https://orcid.org/0000-0001-6803-9399

Soroosh Daqiqeh Rezaei https://orcid.org/0000-0002-9807-2074

Mengfei Wu https://orcid.org/0000-0002-4728-3234

Shiqiang Li https://orcid.org/0000-0002-4095-8606

Jingyee Chee https://orcid.org/0000-0002-4505-7196

Calvin Pei Yu Wong https://orcid.org/0000-0002-3135-7534

Arseniy I. Kuznetsov https://orcid.org/0000-0002-7622-8939

Joel K. W. Yang https://orcid.org/0000-0003-3301-1040

Article

Publisher ID: add3868

DOI: 10.1126/sciadv.add3868

PMC ID: 9683717

PubMed ID: 36417508

SO-VID: 17ab3f0b-9c0d-4d67-bfa7-e3b1f879684d

Copyright © Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

License:

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.