Bistable interface: reversible switching of rectified and non rectified currents on MOF heterostructure thin films

The various physical and chemical properties provided by metal organic frameworks (MOFs) are very attractive for thin film configurations, especially in device applications. The heterostructure thin film of MOF allows for the utilization of unique interfaces formed in this configuration. Usually, the interface is monostable, and the electrical transmission on heterostructure MOF films has been achieved to date as ohmic or rectifying (pn junction) type. This work reports the appearance of bistable interfaces in MOF heterostructure thin films with similar Mott like electrical insulation, where rectified current can be reversibly switched to non rectified current by applying thermal energy. The inherent resistance switching behavior and charge transfer of each MOF layer at different temperatures clearly make the interface complex.