Rationally Designing High-Performance Versatile Organic Memristors Through Molecule-Mediated Ion Movements.

Abstract

Organic memory have attracted tremendous attention for next-generation electronic elements for the molecules' strikingly ease of structural design. However, due to their hardly controllable and low ion transport, it is always essential and challenge to effectively control their random migration, pathway and duration. There are very few effective strategies, and specific platforms with a view to molecule with specific coordination groups-regulating ions have been rarely reported. In this work, as a generalized rational design strategy, w e introduced the well-known Tetracyanoquinodimethane (TCNQ) with multiple coordination groups and small plane structure into stable polymers framework to modulate the Ag migration and then achieved the high performance devices with ideal productivity, low operation voltage and power, stable switching cycles and state retention. Raman mapping demonstrated that the migrated Ag can specially coordinate with the embedded TCNQ molecules. Notably, w e can modulate the TCNQ molecule distribution inside the polymer framework and regulate the memristive behaviors through controlling the formed Ag conductive filaments (CFs) as demonstrated by the Raman mapping, in-situ C-AFM, XRD and depth-profiling XPS. Thus the controllable molecule-mediated Ag movements show its potential in rationally designing high performance devices and versatile functions and is enlightening in constructing memristors with molecule-mediated ion movements. This article is protected by copyright. All rights reserved.