Abstract
Thin films of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF), dimethyl- and trimethyl-TTF have been prepared using the thermal evaporation technique. The films were investigated using electron/optical microscopy, optical absorption spectroscopy and d.c. electrical measurements. A maximum in-plane, d.c. room temperature conductivity of 1.6±0.6 S cm −1 was noted for iodine-doped films of BEDT-TTF. The thermal activation energy, over the range 77–300 K, was 0.028±0.02 eV for this material.
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