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Issue 29, 2016
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Kinetic factors determining conducting filament formation in solid polymer electrolyte based planar devices

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Abstract

Resistive switching characteristics and conducting filament formation dynamics in solid polymer electrolyte (SPE) based planar-type atomic switches, with opposing active Ag and inert Pt electrodes, have been investigated by optimizing the device configuration and experimental parameters such as the gap distance between the electrodes, the salt inclusion in the polymer matrix, and the compliance current applied in current–voltage measurements. The high ionic conductivities of SPE enabled us to make scanning electron microscopy observations of the filament formation processes in the sub-micrometer to micrometer ranges. It was found that switching behaviour and filament growth morphology depend strongly on several kinetic factors, such as the redox reaction rate at the electrode–polymer interfaces, ion mobility in the polymer matrix, electric field strength, and the reduction sites for precipitation. Different filament formations, resulting from unidirectional and dendritic growth behaviours, can be controlled by tuning specified parameters, which in turn improves the stability and performance of SPE-based devices.

Graphical abstract: Kinetic factors determining conducting filament formation in solid polymer electrolyte based planar devices

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Supplementary files

Article information


Submitted
21 Jan 2016
Accepted
05 Apr 2016
First published
08 Apr 2016

This article is Open Access

Nanoscale, 2016,8, 13976-13984
Article type
Paper

Kinetic factors determining conducting filament formation in solid polymer electrolyte based planar devices

K. Krishnan, M. Aono and T. Tsuruoka, Nanoscale, 2016, 8, 13976
DOI: 10.1039/C6NR00569A

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