Fig. 2 | npj 2D Materials and Applications

Fig. 2

From: Graphene–ferroelectric transistors as complementary synapses for supervised learning in spiking neural network

Fig. 2

Electrical properties of GrFeFET. a The measured source-drain conductance versus back gate voltage Gds(Vbg), where the left and right branches correspond to hole- and electron-dominated transport respectively. b Electric hysteresis loop by sweeping top gate voltage Gds(Vtg). c The electric displacement versus the applied electric field D(E) deduced from b, while that obtained directly from ferroelectric measurement of PVDF is plotted with red line. d The measured capacitance versus the applied voltage C(V) for single PVDF film with 100 nm thickness

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