Optically Tunable Magneto-Capacitance Phenomenon in Organic Semiconducting Materials Developed by Electrical Polarization of Intermolecular Charge-Transfer States

Optically tunable magneto-capacitance can be developed by using photo-generated intermolecular charge-transfer (CT) states in an organic donor: acceptor (TPD:BBOT) composite through magnetic field-dependent singlet/triplet ratio and singlet/triplet ratio-dependent electrical polarization. The magnitude and line shape of the magneto-capacitance can be readily tuned by changing the density of intermolecular CT states.