Drop-coated Titanium Dioxide Memristors

TL;DR

This paper presents a simple drop-coating method for fabricating titanium dioxide memristors on flexible substrates, demonstrating good performance and accessibility without the need for a forming step.

Contribution

It introduces a novel, accessible drop-coating fabrication process for TiO2 memristors on flexible substrates, comparing electrode materials and showing improved device reliability.

Findings

Drop-coated TiO2 memristors exhibit good memristance profiles.

Aluminium electrodes outperform gold, preventing device failure.

Devices do not require a forming step.

Abstract

The fabrication of memristors by drop-coating sol-gel Ti(OH)$_4$ solution onto either aluminium foil or sputter-coated aluminium on plastic is presented. The gel layer is thick, 37$\mu$m, but both devices exhibit good memristance I-V profiles. The drop coated aluminium foil memristors compare favourably with the sputter-coated ones, demonstrating an expansion in the accessibility of memristor fabrication. A comparison between aluminium and gold for use as the sputter-coated electrodes shows that aluminium is the better choice as using gold leads to device failure. The devices do not require a forming step.