3D imaging of filaments in organic resistive memory devices

Yan Busby, Nicolas Crespo-Monteiro, Maria Girleanu, Martin Brinkmann, Ovidiu Ersen, Jean Jacques Pireaux

Research output: Contribution to journalArticle

Abstract

Filaments in organic and hybrid resistive memories are studied by combining advanced characterization techniques. Model ITO/polymer/Ag devices based on a cross-linked polystyrene layer, are investigated with XPS and ToF-SIMS depth profile analysis to provide a quantitative 3D spectroscopy showing conductive filaments forming between the two metal electrodes. Filament formation mechanisms are discussed by comparing ToF-SIMS reconstructions from pristine and electrically operated devices and by analyzing the drift and diffusion of metal cluster by cross-sectional STEM. Filaments are shown to form by the drift of silver from tips like structures which are formed during the top electrode deposition and the counter drift of indium from the ITO. The switching mechanism is interpreted in terms of reversible activation/inactivation of the same conductive path.

Original languageEnglish
Pages (from-to)40-45
Number of pages6
JournalOrganic Electronics: physics, materials, applications
Volume16
DOIs
Publication statusPublished - 6 Nov 2014

Fingerprint

Secondary ion mass spectrometry
filaments
Metals
Imaging techniques
Data storage equipment
Electrodes
Indium
Polystyrenes
ITO (semiconductors)
Silver
secondary ion mass spectrometry
Polymers
X ray photoelectron spectroscopy
Chemical activation
Spectroscopy
electrodes
metal clusters
deactivation
indium
polystyrene

Keywords

  • Filaments
  • Organic electronics
  • Organic memory devices
  • Resistive switching
  • ToF-SIMS

Cite this

Busby, Yan ; Crespo-Monteiro, Nicolas ; Girleanu, Maria ; Brinkmann, Martin ; Ersen, Ovidiu ; Pireaux, Jean Jacques. / 3D imaging of filaments in organic resistive memory devices. In: Organic Electronics: physics, materials, applications. 2014 ; Vol. 16. pp. 40-45.
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3D imaging of filaments in organic resistive memory devices. / Busby, Yan; Crespo-Monteiro, Nicolas; Girleanu, Maria; Brinkmann, Martin; Ersen, Ovidiu; Pireaux, Jean Jacques.

In: Organic Electronics: physics, materials, applications, Vol. 16, 06.11.2014, p. 40-45.

Research output: Contribution to journalArticle

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