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Keywords:

  • Nonvolatile organic memory;
  • Data storage;
  • Metal nanoparticles;
  • Silver;
  • Metal nanodots

Abstract

We report on a single-layer organic memory device made of poly(N-vinylcarbazole) embedded between an Al electrode and ITO modified with Ag nanodots (Ag-NDs). Devices exhibit high ON/OFF switching ratios of 104. This level of performance could be achieved by modifying the ITO electrodes with some Ag-NDs that act as trapping sites, reducing the current in the OFF state. Temperature dependence of the electrical characteristics suggest that the current of the low-resistance state can be attributed to Schottky charge tunnelling through low-resistance pathways of Al particles in the polymer layer and that the high-resistance state can be controlled by charge trapping by the Al particles and Ag-NDs.