%A Kwanbyung Chae
%A Duc Cuong Nguyen
%A Shinyoung Ryu
%A Dong-Il Yeom
%A Soonil Lee
%A Ji-Yong Park
%J Current Applied Physics
%T Electrical properties of ion gels based on PVDF-HFP applicable as gate stacks for flexible devices
%X 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.
%N 5
%P 500-504
%V 18
%D 2018
%I Elsevier B.V.
%R 10.1016/j.cap.2018.02.017
%L SisLab3147