Journal
ORGANIC ELECTRONICS
Volume 57, Issue -, Pages 232-238Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2018.03.020
Keywords
OECT; PEDOT:PSS; Impedance spectroscopy; Cation sensor
Funding
- European Commission [664786]
- French National Nanofabrication Network RENATECH
Ask authors/readers for more resources
In this work, we propose a strategy to sense quantitatively and specifically cations, out of a single organic electrochemical transistor (OECT) device exposed to an electrolyte. From the systematic study of six different chloride salts over 12 different concentrations, we demonstrate that the impedance of the OECT device is governed by either the channel dedoping at low frequency and the electrolyte gate capacitive coupling at high frequency. Specific cationic signatures, which originates from the different impact of the cations behavior on the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) polymer and their conductivity in water, allow their discrimination at the same molar concentrations. Dynamic analysis of the device impedance at different frequencies could allow the identification of specific ionic flows which could be of a great use in bioelectronics to further interpret complex mechanisms in biological media such as in the brain.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available