1 Ocak 2015 Dergi makalesi Açık Erişim

Yasin, Muhammad; Tauqeer, T.; Zaidi, Syed M. H.; San, Sait E.; Mahmood, Asad; Kose, Muhammet E.; Canimkurbey, Betul; Okutan, Mustafa

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    <subfield code="a">Synthesis and electrical characterization of Graphene Oxide films</subfield>
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    <subfield code="a">In this work, we have synthesized Graphene Oxide (GO) using modified Hummers method and investigated its electrical properties using parallel plate impedance spectroscopic technique. Graphene Oxide films were prepared using drop casting method on Indium Tin Oxide (ITO) coated glass substrate. Atomic force microscopy was used to characterize the films' microstructure and surface topography. Electrical characterization was carried out using LCR meter in frequency regime (100 Hz to 10 MHz) at different temperatures. AC conductivity sigma(ac) of the films was observed to be varied with angular frequency, omega as omega(S), with S &amp;lt; 1. The electrical properties of GO were found to be both frequency and temperature dependent. Analysis showed that GO film contains direct current (DC) and Correlated Barrier Hopping (CBH) conductivity mechanisms at low and high frequency ranges, respectively. Photon absorption and transmittance capability in the visible range and excellent electrical parameters of solution processed Graphene Oxide suggest its suitability for the realization of low cost flexible organic solar cells and organic Thin Film Transistors, respectively. (C) 2015 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="a">10.1016/j.tsf.2015.07.042</subfield>
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