Frequency-dependent dielectric, electric modulus, and ac conductivity features of Au/n-Si Schottky diodes (SDs) with PVC and (PVC:Graphite/Graphene-Oxide) interlayer

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To determine the interlayer effect on dielectric features and conductivity, Au/n-Si (S-0), Au/PVC/p-Si (S-1), and Au/PVC:Gt-GO/p-Si (S-2) type SDs were grown onto the same n-Si wafer and their admittance measurements performed between 100 Hz and 1 MHz. The observed decrease in C and G/omega values as frequency increases shows that the charges at the interface-states (N-ss) can easily follow ac-signal and supply an excess capacitance and conductance at lower frequencies. Using C and G/omega data at 1.5 V, the dielectric-constant ('), dielectric-loss (''), and loss-tangent (tan delta) were obtai ...Daha fazlası