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dc.contributor.advisorGülseren, Oğuzen_US
dc.contributor.authorEftekhari, Zeinaben_US
dc.date.accessioned2018-03-15T12:21:03Z
dc.date.available2018-03-15T12:21:03Z
dc.date.copyright2018-02
dc.date.issued2018-03
dc.date.submitted2018-03-14
dc.identifier.urihttp://hdl.handle.net/11693/36136
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionThesis (M.S.): Bilkent University, Department of Physics, İhsan Doğramacı Bilkent University, 2018.en_US
dc.descriptionIncludes bibliographical references (leaves 59-61).en_US
dc.description.abstractGraphene, a 2-dimensional crystal of carbon, can absorb 2.3% of light over a very broad spectrum. Doped graphene, however has a gap in optical absorption due to the Pauli blocking principle. For doped graphene, the interband optical transitions with energy less than 2EF are not allowed, therefore the consequent optical absorption is expected to fall down to zero for energies below 2EF threshold. In this thesis, we investigated the optical residual absorption of graphene in Pauli-blocked region. Optical absorption of the monolayer graphene transferred on transparent substrates was analyzed via optical spectroscopy. We used electrostatic and chemical doping methods to shift Fermi energy of graphene. The observed residual absorption of 0.5% which is due to chemical impurities reduced slightly by increasing doping level.en_US
dc.description.statementofresponsibilityby Zeinab Eftekhari.en_US
dc.format.extentxiii, 61 leaves : charts (some color) ; 30 cmen_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectGrapheneen_US
dc.subjectOptical residual absorptionen_US
dc.subjectElectrolyte gatingen_US
dc.subjectQuantum absorption of 2Dsen_US
dc.titleInvestigation of optical residual absorption in grapheneen_US
dc.title.alternativeGrafende optik artık soğrulmanın incelenmesien_US
dc.typeThesisen_US
dc.departmentDepartment of Physicsen_US
dc.publisherBilkent Universityen_US
dc.description.degreeM.S.en_US
dc.identifier.itemidB157887


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