Multifunctional Molecular Charge-Transfer Thin Films
We report the controlled interfacial interaction in the crystallized organic charge tranfer thin films, consisting of bis(ethylenedithio)tetrathiafulvalene and C60. The induced broad-band absorption from UV to near-infrared enables the wavelength dependent ambipolar (negative/positive) photoresponse, while multi-stimuli responsive behavior is achieved through the charge-transfer interactions. In addition, by coupling with tetrathiafulvalene-(7,7,8,8-tetracyanoquinodimethane) charge transfer complex, it shows a significantly increased conductivity. The controlled interfacial changer transfer interaction provides an efficient approach to obtain multifunctional molecular crystallized thin films with superior external stimuli response.