ABSTRACTIn this paper, we describe an all organic molecular memory device that combines the advantages of molecular and organic electronics. We accomplish this by combining C60 molecules with poly(4-vinylphenol) (PVP) and co-dissolving them in iso-propanol. The current-voltage measurements show a large hysteresis in the blend devices, in contrast to pure PVP devices. The thin blend films have been thoroughly characterized using Raman spectroscopy, atomic force microscopy and scanning electron microscopy.
AbstractThis report presents the functioning of a molecular memory device with azo-group-functionalized molecular-junctions between metal nanoelectrodes. These junctions are fabricated by a novel electrostatic-assembly process to incorporate azo-group containing polyelectrolyte (AP) between oppositely charged gold nanoparticles (GNP), functioning as nanoelectrodes. The device exhibits a bistable electronic memory effect induced by charge-transfer between AP and GNP, which can be controlled by photo-excitation of the AP. The ON and OFF memory states were found to have a rectification in the range of ∼5000 – 10000. This study will open avenues for development of next-generation molecular systems and devices to produce novel optoelectronic properties.
Organic Memory Devices Using C60 and Insulating Polymer
