Control of anisotropy of a redox-active molecule-based film leads to non-volatile resistive switching memory.

ABSTRACT: Control of the ?-? interaction direction in a redox-active ?-molecule based film led to the formation of new mechanistic nonvolatile resistive switching memory: a redox-active organic molecule, 2,5,8-tri(4-pyridyl)1,3-diazaphenalene, showed non-volatile bistable resistance states with a high on-off ratio, retention, and endurance only when the molecular orientation was anisotropic. Control experiments using redox-active/redox-inert organic molecules with isotropic/anisotropic molecular orientations implied that the formation of conductive oxidized ?-? stacking layers from non-conductive neutral ?-? stacking layers is responsible for resistive switching phenomena, indicating new mechanisms such as ReRAM. Our findings will give a comprehensive understanding of electron transport in organic solid materials based on the effects of redox-activity and molecular arrangement, leading to fabrication of a new class of ReRAM based on organic molecules.

SUBMITTER: Kim J 

PROVIDER: S-EPMC7066666 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature