Study on electrical characteristics of fluorinated polyimide film

The electrical characteristics (I-V and I-t) of fluorinated polyimide dielectric films were measured as function of time, electric field and sample temperature and the results were discussed in view of existing conduction and charge-transport mechanisms. Experiments and analysis to elucidate conduction mechanisms at low and high electric fields were carried out. The results are presented and discussed. It is concluded that the bulk-limited Pool Frenkel conduction mechanism is likely to dominate for the steady state current at high electric field above 1 MV cm^-1, and in the range of low electric field below 1 MV cm^-1, the Ohmic conduction is the main conduction mechanism.