Tetrahedral framework of inverse opal photonic crystals defines the optical response and photonic band gap

dc.contributor.authorLonergan, Alex
dc.contributor.authorMcNulty, David
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderIrish Research Councilen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2018-09-07T11:33:14Z
dc.date.available2018-09-07T11:33:14Z
dc.date.issued2018-09-08
dc.date.updated2018-09-06T15:07:20Z
dc.description.abstractBy forming anatase TiO2 inverse opals by infiltration of an opal photonic crystal, we demonstrate that the optical response and angle-resolved blue-shift of the band-gap of the inverse opal structure are defined by a particular three-dimensional structure of the infilled voids. The optical structure of TiO2 inverse opals usually displays significant deviation from its physical structure and from the theoretically predicted position of the photonic band-gap. Following rigorous structural characterization of the parent opal template and TiO2 inverse opals, alternative explanations for the signature of optical transmission through inverse opals are proposed. These approaches posit that, for light-matter interaction, an inverse opal is not precisely the inverse of an opal. Accurate parameters for the structure and material properties can be obtained by invoking a Bragg FCC selection rule-forbidden (-211) plane, which is not a realistic model for diffraction in the IO. Alternatively, by assuming optical interactions with just the periodic arrangement of tetrahedral filled interstitial sites in the structure of the inverse opal, a complete reconciliation with the spectral blue-shift with the angle, photonic band gap, and material parameters is obtained when a reduced unit cell is defined based on interstitial void filling. The analysis suggests a reduced interplanar spacing (dā€‰=ā€‰1/āˆš3 D, for pore diameter D), based on the actual structure of an inverse opal in general, rather than a definition based on the inverse of an FCC packed opal. This approach provides an accurate and general description for predicting the spectral response and material parameters of ordered inverse opal photonic crystal materials.en
dc.description.sponsorshipIrish Research Council (Government of Ireland Postgraduate Scholarship under Award No. GOIPG/2016/946);en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLonergan, A., McNulty, D. and O'Dwyer, C. (2018) 'Tetrahedral framework of inverse opal photonic crystals defines the optical response and photonic band gap', Journal of Applied Physics, 124(9), 095106 (10 pp). doi: 10.1063/1.5033367en
dc.identifier.doi10.1063/1.5033367
dc.identifier.endpage095106-10en
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.journaltitleJournal of Applied Physicsen
dc.identifier.startpage095106-1en
dc.identifier.urihttps://hdl.handle.net/10468/6735
dc.identifier.volume124en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/13/TIDA/E2761/IE/LiONSKIN - Moldable Li-ion battery outer skin for electronic devices/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/15/TIDA/2893/IE/Advanced Battery Materials for High Volumetric Energy Density Li-ion Batteries for Remote Off-Grid Power/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2581/IE/Diffractive optics and photonic probes for efficient mouldable 3D printed battery skin materials for portable electronic devices/en
dc.relation.urihttps://aip.scitation.org/doi/10.1063/1.5033367
dc.rightsĀ© 2018, AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Journal of Applied Physics 2018 124:9 and may be found at https://doi.org/10.1063/1.5033367en
dc.subjectCrystal structureen
dc.subjectNanostructured materialsen
dc.subjectPhotonicsen
dc.subjectElectron microscopyen
dc.subjectTiO2en
dc.subjectTitanium dioxideen
dc.subjectPhotonic crystalsen
dc.titleTetrahedral framework of inverse opal photonic crystals defines the optical response and photonic band gapen
dc.typeArticle (peer-reviewed)en
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