Switching effect in organic charge transfer complex crystals

Abstract
A reproducible current switching effect has been observed in various mixed‐stack organic charge transfer crystals whose ionicities are close to the neutral‐ionic phase boundary. This effect appears to be related to the intrinsic nonlinear conductivity, which has recently been reported in these crystals. This switching has a reasonably large delay time and our results indicate that it is a bulk property of the crystals. Discussion is given on the possible mechanism of this effect.