Conductive-bridging random access memory (CBRAM), dominated by conductive filament (CF) formation/rupture, has received much attention due to its simple structure and outstanding performances for nonvolatile memory, neuromorphic computing, digital logic, and analog circuit. However, the negative-SET behavior can degrade device reliability and parameter uniformity. And large RESET current increases power consumption for memory applications. By inserting 2D material, molybdenum disulfide (MoS 2 ), for interface engineering with the device configuration of Ag/ZrO 2 /MoS 2 /Pt, the negative-SET behavior is eliminated, and the RESET current is reduced simultaneously. With the ion barrier property of MoS 2 , the CF can probably not penetrate the MoS 2 layer, thus eliminating the negative-SET behavior. And with the low thermal conductivity of MoS 2 , the internal temperature of the device would be relatively high at RESET, accelerating probably redox reactions. As a result, the RESET current is reduced by an order of magnitude. This interface engineering opens up a way in improving the resistive switching performances of CBRAM, and can be of great benefit to the potential applications of MoS 2 in next-generation data storage.
- conductive filaments
- conductive-bridging random access memory
- electrochemical reactions
- ion barriers
- molybdenum disulfide