Memristive devices based on mass printed organic resistive switching layers

Abstract

Resistive random-access memory is a candidate for next-generation non-volatile memory architectures. In this study, we use flexographic roll-to-roll printing technology for deposition of the resistive layer, a printing method that allows fast and cost-effective fabrication to create non-volatile resistive memory devices. Metal-free organic polymers blends composed of poly(methyl methacrylate) (PMMA) and a surplus of poly(vinyl alcohol) (PVA) serve as the active layer. Microscopic studies of the roll-to-roll printed layers show circular domains of PMMA embedded in PVA. The influence of the PMMA content in the polymer blend is investigated with respect to the performance and reliability of the resistive memory cells. Electrical characterization reveals a retention time of at least eleven days, a Roff/Ron ratio of approx. two orders and write/erase voltages of + 1/−2 V.

Unveiling the Potential of HfO2/WS2 Bilayer Films: Robust Analog Switching and Synaptic Emulation for Advanced Memory and Neuromorphic Computing

“…The resistive switching properties of various materials, including oxides, − chalcogenides, , carbon, ,, perovskite/inorganic, and inorganic/organic, , have been extensively studied for their potential use in next-generation, nonvolatile memory applications. Among these materials, oxide-based memristors are considered to be essential owing to their nonvolatile properties. − However, their large operating voltage, poor switching speed, and endurance limit their potential as practical devices.…”

A Fully Inkjet-Printed Unipolar Metal Oxide Memristor for Nonvolatile Memory in Printed Electronics

“…This includes devices that utilize spin-on-glass [26], [27] and TiO 2 as active layer [28]. On the other hand, almost all reported printed metal oxide memristors are introduced as bipolar resistive switching type [17], [23], [25], [28], [29], [30]. Furthermore, performance-relevant parameters such as endurance under pulsed voltage and the device variability are often not reported for solution-processed or printed devices [3].…”