The aim of the present paper is to study the effect of argon ion implantation on electrical and dielectric properties of polycarbonate. Specimens were implanted with 130 keV Ar~+ ions in the fluence ranging from 1×10~(14) to 1×10~(16) ions cm~(-2). The beam current used was ～0.40 μA cm~(-2). The electrical conduction behaviour of virgin and Ar~+ implanted polycarbonate specimens have been studied through current-voltage (I-V characteristic) measurements. It has been observed that after implantation conductivity increases with increasing ion fluence. The dielectric spectroscopy of these specimens has been done in the frequency range of 100 kHz-100 MHz. Relaxation processes were studied by Cole-Cole plot of complex permittivity (real part of complex permittivity, ε' vs. imaginary part of complex permittivity, ε"). The Cole-Cole plots have also been used to determine static dielectric constant (ε_s), optical dielectric constant (ε_∞), spreading factor (a), average relaxation time (τ_0) and molecular relaxation time (τ). The dielectric behaviour has been found to be significantly affected due to Ar~+ implantation. The possible correlation between this behaviour and the changes induced by the implantation has been discussed.
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