Optical energy band gap of PAAm-GO composites

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dc.contributor.authorEvingür, Gülşen Akin
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:01:14Z
dc.date.available2019-06-27T08:01:14Z
dc.date.issued2018
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractGraphene oxide (GO) can be used as an electron acceptor for polymers. The generation of the exciton in such materials is intimately related to the optical band gap. Polyacrylamide (PAAm) - graphene oxide (GO) composites were prepared via free radical crosslinking copolymerization with GO content varying in the range between 5 and 40 mu l of GO. The influence of the GO content on the optical properties of the composites is characterized by ultraviolet visible spectrophotometer. The optical band gap of the composite has been calculated by using Tauc's model. The tail width of the localized states has been calculated by using Urbach's relation and the values of Urbach's energy with the variation of GO have been found from 289 to 296 eV. The results demonstrated that GO can be well dispersed in the PAAm-GO composites and consequently the optical band gap has been correlated with the various amounts of GO. (C) 2017 Elsevier Ltd. All rights reserved.en_US]
dc.identifier.citation37
dc.identifier.doi10.1016/j.compstruct.2017.02.058en_US
dc.identifier.endpage215
dc.identifier.issn0263-8223en_US
dc.identifier.issn1879-1085en_US
dc.identifier.issn0263-8223
dc.identifier.issn1879-1085
dc.identifier.scopus2-s2.0-85013080861en_US
dc.identifier.scopusqualityQ1
dc.identifier.startpage212en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/310
dc.identifier.volume183en_US
dc.identifier.wosWOS:000414592800021en_US
dc.identifier.wosqualityQ1
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherElsevier Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPolyacrylamide (PAAm)en_US
dc.subjectGraphene oxide (GO)en_US
dc.subjectUV-vis spectrumen_US
dc.subjectAbsorbanceen_US
dc.subjectEnergy band gapen_US
dc.titleOptical energy band gap of PAAm-GO compositesen_US
dc.typeArticleen_US
dspace.entity.typePublication

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