Effects of GNP addition on optical properties and band gap energies of PMMA films

Basit Öğe Kaydı
dc.authoridMERGEN, OMER BAHADIR/0000-0002-8829-436X
dc.authoridPEKCAN, Onder/0000-0002-0082-8209
dc.authorwosidMERGEN, OMER BAHADIR/X-6030-2019
dc.authorwosidPEKCAN, Onder/Y-3158-2018
dc.contributor.authorMergen, Omer Bahadir
dc.contributor.authorArda, Ertan
dc.contributor.authorKara, Selim
dc.contributor.authorPekcan, Onder
dc.date.accessioned2024-06-12T11:20:15Z
dc.date.available2024-06-12T11:20:15Z
dc.date.issued2019
dc.departmentTrakya Üniversitesien_US
dc.description.abstractIn this study, the effects of graphene nanoplatelet (GNP) doping on the optical parameters (absorption coefficient, alpha and extinction coefficient, k) and the optical transition energies (optical band gap and Urbach energies) of poly(methyl methacrylate)/graphene nanoplatelet (PMMA/GNP) composite films were studied. PMMA/GNP composite films with various GNP mass fractions were prepared by spin coating technique. The absorbance (A) changes of the prepared composites were measured by using UV-Vis technique. The alpha and k values of the composites were obtained from UV-Vis data. The observed rapid increase in A values in UV-region were associated with the optical transitions of GNP electrons from valence to conduction band. The direct (E-d) and indirect (E-i) optical band gap energies of the composites were determined by using Tauc method. Both of the band gap energies were decreased when the GNP content in the PMMA matrix is increased. The decrease in the band gap energies was interpreted as evidence of increased conductivity of the composites. Additionally, energies of the band tails (Urbach energy) were calculated. It was seen that the Urbach energy levels were increased with GNP content. POLYM. COMPOS., 40:1862-1869, 2019. (c) 2018 Society of Plastics Engineersen_US
dc.description.sponsorshipTrakya University Scientific Research Project Unit (TUBAP) [2016/146]en_US
dc.description.sponsorshipContract grant sponsor: Trakya University Scientific Research Project Unit (TUBAP); contract grant number: 2016/146.; Contract grant sponsor: Trakya University Scientific Research Project Unit (TUBAP); contract grant number: 2016/146.en_US
dc.identifier.doi10.1002/pc.24948
dc.identifier.endpage1869en_US
dc.identifier.issn0272-8397
dc.identifier.issn1548-0569
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85052620311en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1862en_US
dc.identifier.urihttps://doi.org/10.1002/pc.24948
dc.identifier.urihttps://hdl.handle.net/20.500.14551/25519
dc.identifier.volume40en_US
dc.identifier.wosWOS:000467582900017en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofPolymer Compositesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keywords]en_US
dc.titleEffects of GNP addition on optical properties and band gap energies of PMMA filmsen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu