Nanotube Optoelectronic Memory Devices

We have combined carbon nanotube field effect transistor devices with a photosensitive polymer to fabricate an optoelectronic memory device. Electric charges are created upon optical illumination by the polymer−nanotube element of the structure, and charge storage occurs in the nanotube transducer. The read and erase functions are performed by a voltage applied across the nanotube channel. Spectral response of the device is adjusted by utilizing different polymers with different absorption characteristics.