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Resistive Switching Memory based on Silver-doped Chitosan Thin Films

Published online by Cambridge University Press:  16 January 2018

C. Strobel
Affiliation:
Ulm University, Institute of Electron Devices and Circuits, Albert-Einstein-Allee 45, 89081Ulm, Germany
T. Sandner
Affiliation:
Ulm University, Institute of Electron Devices and Circuits, Albert-Einstein-Allee 45, 89081Ulm, Germany
S. Strehle*
Affiliation:
Ulm University, Institute of Electron Devices and Circuits, Albert-Einstein-Allee 45, 89081Ulm, Germany
*
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Abstract

Memristors represent an intriguing two-terminal device strategy potentially able to replace conventional memory devices as well as to support neuromorphic computing architectures. Here, we present the resistive switching behaviour of the sustainable and low-cost biopolymer chitosan, which can be extracted from natural chitin present for instance in crab exoskeletons. The biopolymer films were doped with Ag ions in varying concentrations and sandwiched between a bottom electrode such as fluorinated-tin-oxide and a silver top electrode. Silver-doped devices showed an overall promising resistive switching behaviour for doping concentrations between 0.5 to 1 wt% AgNO3. As bottom electrode fluorinated-tin-oxide, nickel, silver and titanium were studied and multiple write and erase cycles were recorded. However, the overall reproducibility and stability are still insufficient to support broader applicability.

Type
Articles
Copyright
Copyright © Materials Research Society 2018 

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