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dc.contributor.authorPark, C-S
dc.contributor.authorShrestha, VR
dc.contributor.authorLee, S-S
dc.contributor.authorKim, E-S
dc.contributor.authorChoi, D-Y
dc.date.accessioned2020-12-21T03:51:31Z
dc.date.available2020-12-21T03:51:31Z
dc.date.issued2015-02-16
dc.identifierpii: srep08467
dc.identifier.citationPark, C. -S., Shrestha, V. R., Lee, S. -S., Kim, E. -S. & Choi, D. -Y. (2015). Omnidirectional color filters capitalizing on a nano-resonator of Ag-TiO2-Ag integrated with a phase compensating dielectric overlay. SCIENTIFIC REPORTS, 5 (1), https://doi.org/10.1038/srep08467.
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/11343/257383
dc.description.abstractWe present a highly efficient omnidirectional color filter that takes advantage of an Ag-TiO2-Ag nano-resonator integrated with a phase-compensating TiO2 overlay. The dielectric overlay substantially improves the angular sensitivity by appropriately compensating for the phase pertaining to the structure and suppresses unwanted optical reflection so as to elevate the transmission efficiency. The filter is thoroughly designed, and it is analyzed in terms of its reflection, optical admittance, and phase shift, thereby highlighting the origin of the omnidirectional resonance leading to angle-invariant characteristics. The polarization dependence of the filter is explored, specifically with respect to the incident angle, by performing experiments as well as by providing the relevant theoretical explanation. We could succeed in demonstrating the omnidirectional resonance for the incident angles ranging to up to 70°, over which the center wavelength is shifted by below 3.5% and the peak transmission efficiency is slightly degraded from 69%. The proposed filters incorporate a simple multi-layered structure and are expected to be utilized as tri-color pixels for applications that include image sensors and display devices. These devices are expected to allow good scalability, not requiring complex lithographic processes.
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleOmnidirectional color filters capitalizing on a nano-resonator of Ag-TiO2-Ag integrated with a phase compensating dielectric overlay
dc.typeJournal Article
dc.identifier.doi10.1038/srep08467
melbourne.affiliation.departmentSchool of Physics
melbourne.source.titleScientific Reports
melbourne.source.volume5
melbourne.source.issue1
dc.rights.licenseCC BY
melbourne.elementsid1175669
melbourne.contributor.authorShrestha, Vivek
dc.identifier.eissn2045-2322
melbourne.accessrightsOpen Access


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