2D Materials for Selectorless Resistive Switching Memory

Invention Description

Selectorless resistive random-access memory is crucial for achieving high-density crossbar scaling, however, suppressing sneak path currents (SPCs) without external selector components is still a major challenge. Conventional von Neumann architectures, which transfer data between the process unit towards memory, struggle to keep pace with AI demands. Traditional approaches that attempt to solve this bottle neck improve latency and bandwidth but still require data movement between on-chip memory.

 

Researchers at Arizona State University have developed novel Cu0.5Ag0.5InP2S6 (CAIPS) van der Waals materials for non-volatile memory arrays that intrinsically enable nonlinear switching and multilevel resistive states. These materials suppress sneak path currents without requiring external selector components. By combining the characteristics of CuInP2S6 and AgInP2S6, these materials exhibit asymmetric out-of-plane diffusion barriers enhancing self-rectifying transport and improving device performance. The resulting devices demonstrate stable bipolar resistive switching, high intrinsic nonlinearity, and low switching voltages suitable for scalable and energy-efficient memory and computing applications.

 

This technology introduces novel materials exhibiting intrinsic selectorless behavior which supports energy-efficient operation and offer new opportunities for compact memory and neuromorphic architectures in edge computing applications.

 

Potential Applications

Benefits and Advantages

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