Investigation of thermally robust single-component resistive switching organic memory cell

A novel organic memory device based on titanyl phthalocyanine (TiOPc) thin film sandwiched between Aluminum and indium tin oxide electrodes was reported. With a single-component organic material, the device can achieve good performance, such as a high on/off current ratio of 10⁴, a large 4 V read voltage window, and good retention (14,000 s at 1 V stress). The organic memory cell can maintain bistable performance up to 525 K due to the thermal robustness of Ti OPc, indicating the potential for hybrid integration with CMOS technology. The possible switching mechanism is proposed and well fitted with experimental data. The results show that the interface is significant for the reversible switching phenomenon. Trap-filling space charge limited conduction (S CLC) with TiOPc charge confinement and electrochemical reaction at the interface inducing lower electron affinity can elucidate the switching behavior of the TiOPc memory cell.