Versatile memristor implemented in van der Waals CuInP2S6

Memristors are playing an increasingly important role in developing in-memory computing. Versatile memristors which offer both volatile and non-volatile performances can be employed as both memories and selectors, displaying unique advantages for developing novel electronic circuits. Herein, the remarkable multifunctional memristor with switchable operating modes between volatile and non-volatile by regulating compliance currents is implemented in Ag/CIPS/Au (CIPS: CuInP2S6) device. Diode-like volatile memristor performances with the rectification ratio of 10(3) and an endurance of 500 switching cycles were obtained. Meanwhile, significant non-volatile memory performances with on/off ratio of 10(3) and retention up to 10(4) s were also developed, which enables it to be utilized as selectors and memories simultaneously. Moreover, such versatile memristor can emulate the short-term plasticity (STP) and long-term plasticity (LTP) of artificial synapse, demonstrating its advantages in neuromorphic computing applications.

Automated summary

Versatile memristors with switchable volatile and non-volatile operating modes were implemented in Ag/CIPS/Au devices. They exhibited diode-like volatile memristor performances with rectification ratio of 10(3) and endurance of 500 switching cycles. Significant non-volatile memory performances with on/off ratio of 10(3) and retention up to 10(4) s were also achieved, enabling their application as both selectors and memories. Moreover, these versatile memristors demonstrated the ability to emulate short-term and long-term plasticity of artificial synapses, showing their potential in neuromorphic computing applications.