Control of molecular orientation in TTF TCNQ co-evaporated films by applying an electric field

Abstract We have investigated the effect of an electric field on the molecular orientation of tetrathiafulvalene–tetracyanoquinodimethane (TTF–TCNQ) co-evaporated films, using an optical microscope, a scanning tunnelling microscope and X-ray diffraction. It is found that with an electric field applied TTF–TCNQ grows with the b-axis parallel to the electric field.