Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session M16: Organic Electronics I: Mixed Transport in Conjugated and Open-Shell Polymers
8:00 AM–10:48 AM,
Wednesday, March 16, 2022
Room: McCormick Place W-184A
Sponsoring
Unit:
DPOLY
Chair: Rafael Verduco, Rice University
Abstract: M16.00005 : Understanding the role of electrode composition on the current-voltage response of Cu/PEDOT: PSS/ITO memristive device.
9:12 AM–9:24 AM
Presenter:
Subhadeep Koner
(The University of Tennessee)
Authors:
Subhadeep Koner
(The University of Tennessee)
Stephen A Sarles
(The University of Tennessee, Knoxville)
Here we build microscale planar electrodes of different compositions (Cu, Au, ITO) on non-conductive silicon wafers with an inter-electrode gap of 5 µm. We spin-coat PEDOT:PSS onto the electrodes. Initial i-v analysis shows fading of hysteresis across cycles for Cu-Cu electrode devices and no hysteresis for Au-Au devices. These results differ from the bipolar hysteretic i-v response we observed repeatedly in vertically stacked Cu/PEDOT:PSS/ITO devices with macroscale electrodes. These results highlight the importance of using dissimilar electrode materials to achieve bipolar resistive switching in PEDOT:PSS memristors. Therefore, through i-v measurements and microscopy techniques, we aim to reveal the role of dissimilar electrodes on the switching mechanism of the planar Cu/PEDOT:PSS/ITO device.
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