Asymmetrical optical response of opal photonic crystals with graded thickness

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dc.contributor.authorGrant, Alex
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderIrish Research Council
dc.date.accessioned2024-05-01T14:11:57Z
dc.date.available2024-04-29T10:01:50Zen
dc.date.available2024-05-01T14:11:57Z
dc.date.issued2023-11-27
dc.date.updated2024-04-29T09:01:51Zen
dc.description.abstractThe influence of thickness gradient and structural order on the spectral response of opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented. SEM imaging and angle resolved optical transmission spectroscopy are used to investigate the evolution of the PBG along a thickness gradient for opals grown from five different colloidal sphere concentrations at two different evaporation rates. The degradation of structural order along the thickness gradient is demonstrated, the occurrence of which attenuates the PBG with the thinning of the opal film and results in asymmetrical angle-resolved transmission spectra. The asymmetry in transmission intensity becomes more pronounced for opals grown from lower volume fractions, where secondary Bragg reflections also appear at low incident angles.
dc.description.sponsorshipIrish Research Council (Advanced Laureate Award IRCLA/19/118)
dc.description.statusPeer revieweden
dc.description.versionPublished Version
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid043501
dc.identifier.citationGrant, A. and O’Dwyer, C. (2023) 'Asymmetrical optical response of opal photonic crystals with graded thickness', ECS Advances, 2(4), 043501 (7pp). https://doi.org/10.1149/2754-2734/ad0cd4
dc.identifier.doihttps://doi.org/10.1149/2754-2734/ad0cd4
dc.identifier.eissn2754-2734
dc.identifier.endpage7
dc.identifier.issued4
dc.identifier.journaltitleECS Advances
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/15833
dc.identifier.volume2
dc.language.isoenen
dc.publisherIOP Publishing
dc.rights© 2023, the Authors. Published on behalf of The Electrochemical Society by IOP Publishing Limited.. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/ by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAsymmetrical optical response
dc.subjectOpal photonic crystals with graded thickness
dc.titleAsymmetrical optical response of opal photonic crystals with graded thickness
dc.typeArticle (peer-reviewed)
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