Hybrid indium tin oxide-Au metamaterial as a multiband bi-functional light absorber in the visible and near-infrared ranges

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buir.contributor.authorOsgouei, Ataollah Kalantari
buir.contributor.authorHodjat, Hajian
buir.contributor.authorSerebryannikov, Andriy E.
buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidOsgouei, Ataollah Kalantari|0000-0002-0971-7687
buir.contributor.orcidHajian, Hodjat|0000-0001-6564-6273
buir.contributor.orcidSerebryannikov, Andriy E.|0000-0001-6896-543X
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage9en_US
dc.citation.issueNumber27en_US
dc.citation.spage1en_US
dc.citation.volumeNumber54en_US
dc.contributor.authorOsgouei, Ataollah Kalantari
dc.contributor.authorHajian, Hodjat
dc.contributor.authorSerebryannikov, Andriy E.
dc.contributor.authorÖzbay, Ekmel
dc.date.accessioned2022-02-09T06:16:13Z
dc.date.available2022-02-09T06:16:13Z
dc.date.issued2021-04-23
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractMetamaterial nearly perfect light absorbers (MPAs) with dual-narrowband functionality—that absorb light in two narrowband adjacent wavelength regions—have attracted considerable attention due to their intriguing applications, such as sensing, photovoltaic, and thermal emission. Here, we propose a multi-band MPA with two narrowband absorption responses that are centered on the visible and near-infrared (NIR) wavelengths (773 nm and 900 nm, respectively) and a broadband absorptive characteristic in another window in the NIR region (ranging from 1530 nm to 2700 nm with a bandwidth of 1170 nm). The MPA comprises a periodic array of self-aligned hybrid indium tin oxide (ITO)-Au split-ring-resonators that are separated from an optically thick bottom reflector with a SiO2 layer. Based on numerical calculations, which are accompanied with a semi-analytical examination, we find that the dual narrowband and broadband responses are attributed to the hybridization of the optical responses of gold as a plasmonic material with the ones of ITO. Note that ITO acts as a low-loss dielectric in the visible range and a lossy plasmonic material in the NIR region. Moreover, due to the applied symmetry in the unit cell of the metamaterial, the proposed MPA represents polarization insensitive and omnidirectional absorptive features. The proposed metastructure can find potential applications in selective thermophotovoltaic devices, thermal emitters, and sensors.en_US
dc.description.provenanceSubmitted by Burcu Böke (tburcu@bilkent.edu.tr) on 2022-02-09T06:16:12Z No. of bitstreams: 1 Hybrid_indium_tin_oxide_Au_metamaterial_as_a_multiband_bi_functional_light_absorber_in_the_visible_and_near_infrared_ranges.pdf: 1893361 bytes, checksum: 40f10ba26567691a16b11e1353cd3286 (MD5)en
dc.description.provenanceMade available in DSpace on 2022-02-09T06:16:13Z (GMT). No. of bitstreams: 1 Hybrid_indium_tin_oxide_Au_metamaterial_as_a_multiband_bi_functional_light_absorber_in_the_visible_and_near_infrared_ranges.pdf: 1893361 bytes, checksum: 40f10ba26567691a16b11e1353cd3286 (MD5) Previous issue date: 2021-04-23en
dc.identifier.doi10.1088/1361-6463/abf579en_US
dc.identifier.eissn1361-6463
dc.identifier.issn0022-3727
dc.identifier.urihttp://hdl.handle.net/11693/77141
dc.language.isoEnglishen_US
dc.relation.isversionofhttps://doi.org/10.1088/1361-6463/abf579en_US
dc.subjectHybrid metamaterialsen_US
dc.subjectLight absorbersen_US
dc.subjectVisibleen_US
dc.subjectNear infrareden_US
dc.titleHybrid indium tin oxide-Au metamaterial as a multiband bi-functional light absorber in the visible and near-infrared rangesen_US
dc.typeArticleen_US

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