Determination of optical band gap, transmittance, and dielectric constant parameters of Indium Phosphide/Zinc Sulfide quantum dot doped cholesteric liquid crystals

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dc.authorscopusid57204138700en_US
dc.authorscopusid6602429860en_US
dc.contributor.authorKocakulah, Gulsum
dc.contributor.authorKoysal, Oguz
dc.date.accessioned2024-08-23T16:04:36Z
dc.date.available2024-08-23T16:04:36Z
dc.date.issued2024en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractNanomaterial doped cholesteric liquid crystal (CLC) composites have become important due to the improvement of their physical properties recently. In this study, the change of Indium Phosphide/Zinc Sulfide (InP/ZnS) quantum dot (QD) concentration in the optical, electro-optical, and dielectric parameters of CLC was examined. Voltage dependent transmittance and response time parameters were determined by the electro-optical switching method. Moreover, wavelength dependent absorbance and transmittance values of samples were investigated Ultraviolet/Visible (UV/VIS) spectroscopy. Dielectric parameters were examined with dielectric spectroscopy. Considering the experimental results, threshold voltage (Vth), response time (tau R), and optical band gap (Eg) values of CLC decreased with InP/ZnS QD contribution. On the other hand, dielectric constants (epsilon ' and epsilon ') and ac conductivity (sigma ac) values increased with InP/ZnS QD contribution at low frequencies. Furthermore, voltage dependent transmittance data indicated that samples were transparent in the absence of voltage (planar -state) due to transmission of light and opaque in the presence of certain voltage (focal conic -state) due to scattering of light. Results show that InP/ZnS QD causes considerable changes in the physical parameters of CLC and the produced samples can be used in the technological devices, especially light shutters.en_US
dc.identifier.doi10.1016/j.optmat.2024.115101
dc.identifier.issn0925-3467
dc.identifier.issn1873-1252
dc.identifier.scopus2-s2.0-85185892782en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.optmat.2024.115101
dc.identifier.urihttps://hdl.handle.net/20.500.12684/14284
dc.identifier.volume149en_US
dc.identifier.wosWOS:001188473500001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofOptical Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCholesteric liquid crystalen_US
dc.subjectDielectric constanten_US
dc.subjectOptical band gapen_US
dc.subjectTransmittanceen_US
dc.subjectQuantum doten_US
dc.subjectWalled Carbon Nanotubesen_US
dc.subjectFrequencyen_US
dc.subjectBehavioren_US
dc.subjectVoltageen_US
dc.subjectDisplayen_US
dc.titleDetermination of optical band gap, transmittance, and dielectric constant parameters of Indium Phosphide/Zinc Sulfide quantum dot doped cholesteric liquid crystalsen_US
dc.typeArticleen_US

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