Electrical properties of ion gels based on PVDF-HFP applicable as gate stacks for flexible devices |
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Institution: | Department of Physics and Department of Energy Systems Research, Ajou University, Suwon 16499 South Korea |
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Abstract: | Electrical characteristics of ion gels prepared by loading different amounts of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIM]TFSI]) in Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) are investigated and compared with those of ion liquid, EMIM]TFSI] for possible application as a gate stack for flexible electronic devices. Capacitance and impedance as a function of frequency are measured, which can be well accounted for by a simple circuit model identifying the local device components. The operation of a flexible field effect transistor based on graphene and the ion gel as a top gate stack is also demonstrated. |
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Keywords: | Ion liquid Polymer Ion gel Field effect transistor Flexible device |
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