Electrical conduction characteristics in XLPE film evaporated different metal electrode in cathode

Electrical conduction characteristics of XLPE films evaporated with different metal electrodes are discussed. The conduction current in the M(metal)-I(XLPE) -M(metal) structure is measured in the temperature range from 25 to 90 /spl deg/C. Several kinds of metals are used as electrodes, such as, Al, Ag and Cu. From the experimental results, it is concluded that the conduction mechanism at lower electric field is electronic current and the non-linearity at higher field may be explained by the space charge limited current (SCLC).