Preparation, surface characterization and dielectric studies of hydrogen irradiated Cu/PANI polymer composites

In this study, a PANI/Cu nanocomposite films are prepare using ion sputtering technique. Then PANI/Cu nanocomposite films are irradiated by different fluence of low energy hydrogen ion (1x1016, 4x1016, and 8x1016 ion/cm2 ). The changes in crystallite structure are studied using XRD diffractometer. The dielectric properties and the energy density of the blank and irradiated films are obtained at room temperature in the frequency range of 100 to 5MHz. The measurements indicated significant changes in these parameters after hydrogen ion irradiation. The dielectric constant 𝜀𝜀′ improved from 1.5 for PANI/Cu to 6, 10 and 23 after exposed to 1x1016, 4x1016, and 8x1016 ion/cm2 . Moreover, the conductivity energy density is improved from 1.6x10-5 for unirradiated to 2.1x10-5 , 4.8x10-5 , and 1.5x10-4 for irradiated films. The results confirmed an improving in electric properties and energy density of the irradiated PANI/Cu nanocomposite films, which can using these films in wide range of application such as super-capacitor and microelectronic devices.