Organic Field-Effect Transistor-Based Nonvolatile Memory Devices Having Controlled Metallic Nanoparticle/Polymer Composite Layers

Abstract

Nonvolatile memory devices based on the pentacene film and controlled gold nanoparticle (Au np )/polymer composite layers were developed. Organic field-effect transistor-based nonvolatile memory devices having self-assembled Au np exhibited controllable and reliable current level differences (on- and off-states) according to the applied gate voltages (programming/erasing operations). The memory devices showed large memory windows as well as good data retention properties by adopting charge storage layers of controlled Au np separated by insulating polymer layers. The process for fabricating nonvolatile memory devices was based on the solution processes and organic semiconductor layers, so it has a potential use in flexible nonvolatile memory applications.