Interstitial Ag⁺ Engineering Enables Superior Resistive Switching in Quasi-2D Halide Perovskites.

ABSTRACT: Halide perovskite-based memristors are promising neuromorphic devices due to their unique ion migration and interface tunability, yet their conduction mechanisms remain unclear, causing stability and performance issues. Here, we engineer interstitial Ag+ ions within a quasi-two-dimensional (quasi-2D) halide perovskite ((C6H5C2H4NH3)2Csn-1PbnI3n+1) to enhance device stability and controllability. The introduced Ag+ ions occupy organic interlayers, forming thermodynamically stable structures and introducing deep-level energy states without structural distortion, which do not act as non-radiative recombination centers, but instead serve as efficient charge trapping centers that stabilize intermediate resistance states and facilitate controlled filament evolution during resistive switching. Th

SUBMITTER: Qin H 

PROVIDER: S-EPMC12389324 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature