Electronic conduction in polyethylene naphthalate at high electric fields

Abstract

The electric conduction in polyethylene naphthalate film was investigated under high electric fields. The current strongly depended on the electrode materials, especially on the cathode metal. Schottky-injection current was observed in the specimen with an Al cathode at the fields less than 106 V/cm, while at higher fields (>106 V/cm) tunneling-injection current and electroluminescence were observed simultaneously, suggesting the impact ionization by electrons injected from the electrode.