Nonlinear response and two stable electrical conductivity levels measured in plasticized PVC thin film samples

TL;DR

This study investigates the nonlinear electrical response of plasticized PVC thin films, revealing two stable conductivity states and spontaneous transitions between them, with potential implications for memory devices.

Contribution

It demonstrates the existence of two stable, long-lasting conductivity states in plasticized PVC films and characterizes their spontaneous reversible transitions, advancing understanding of polymer electrical behavior.

Findings

Two stable conductivity levels differ by several orders of magnitude.

Spontaneous reversible resistance transitions observed in PVC films.

Resistance values measured at high and low states are approximately 10^6 and 10^3 Ohms.

Abstract

The electrical conductivity of PVC films prepared with a patented plasticizer of type "A" was measured with high precision automated setup, based on standard ring sell with a voltage range much less than breakdown voltage. Continual voltage-current measurements permit to take into account Debay relaxation process and clearly distinguish specific polymer film conductivity effects, connected with continuous current-stabilization behavior and transitions between two stable (long-living) states with several order magnitude different conductivities. Spontaneous reversible and non-destructive transitions of resistance levels was observed. For 30 mkm polymer films the values of sample resistance was measured equal to: high- 106 Ohm and low -103 Ohm.