Light-/steam-driven polymeric crosslinking with porous multistructure pattern for ultrastable and fast-speed memory

Abstract

Organic memories typically comprise memristive polymer mediums sandwiched between two electrodes, with the advantages of wet manufacturing and modulated function. However, the issues associated with structural instability, low-speed switch, and hard pattern in polymeric memories are the main obstacles towards practical uses. Here, we present an ultrastable and fast-speed memory array that uses amorphous polymer nanofilm with light-/steam-driven crosslinked porous multistructure as memristive materials. The polymer diode shows nonvolatile rewritable flash memory characteristics, with a high ON/OFF ratio, long retention time, and high speeds of set (70 ns) and reset (845 ns) operations. Impressively, the memory cell undergoes harsh conditions in ultraviolet irradiation and extreme temperatures. By rationally integrating the array with target sensors, an artificial sensory memory architecture is constructed to mimic visual/thermal perception and recording, demonstrating great potential for biomimetic neuromorphic electronics. Our results advance a commercial perspective on memristive organics capable of integration patterns and high performance.