Mechanism of Electric Field Induced Conductance Transition in Molecular Organic Semiconductor Based Thin Films

Details Mechanism of Electric Field Induced Conductance Transition in Molecular Organic Semiconductor Based Thin Films Mechanism of Electric Field Induced Conductance Transition in Molecular Organic Semiconductor Based Thin Films

2006-04-08

arxiv.org/abs/cond-mat/0604219v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

We have studied the electrical field induced conductance transition in thin film of Perylenetetracarboxylic dianhydride sandwiched between two metal electrodes, from an insulating state to conducting state with a high ON-OFF ratio in those devices, where one of electrodes is either Al or Cu. Temperature dependence of resistivity shows semiconducting behavior in OFF-state, but it shows metallic behavior in the ON-state. Devices with a thin intermediate layer of LiF between metal electrode and organic layer, or devices fabricated in planar configuration do not show switching behavior. All these suggest that conducting pathways are responsible for the electric field induced conductance transition.

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