Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/160055
Title: Crown ether enabled enhancement of ionic–electronic properties of PEDOT:PSS
Authors: Stephen, Meera
Wu, Xihu
Li, Ting
Salim, Teddy
Hou, Kunqi
Chen, Shuai
Leong, Wei Lin
Keywords: Engineering::Materials::Microelectronics and semiconductor materials
Issue Date: 2022
Source: Stephen, M., Wu, X., Li, T., Salim, T., Hou, K., Chen, S. & Leong, W. L. (2022). Crown ether enabled enhancement of ionic–electronic properties of PEDOT:PSS. Materials Horizons. https://dx.doi.org/10.1039/D2MH00496H
Project: MOE2019-T2-2-106 
MOE2018-T2-1-075 
W1925d0106 
Journal: Materials Horizons 
Abstract: Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) based organic electrochemical transistors (OECTs) have proven to be one of the most versatile platforms for various applications including bioelectronics, neuromorphic computing and soft robotics. The use of PEDOT:PSS for OECTs originates from its ample mixed ionic-electronic conductivity, which in turn depends on the microscale phase separation and morphology of the polymer. Thus, modulation of the microstructure of PEDOT:PSS film enables us to tune the operation and device characteristics of the resulting OECT. Herein we report enhanced transconductance (20 mS), fast switching (32 µs) and stable operation (10000 cycles) of modified PEDOT:PSS based OECTs using 15-crown-5 as an additive. Four probe measurements reveal an increased electronic conductivity of the modified PEDOT:PSS film (~450 Scm-1) while tapping mode atomic force microscopy shows an increased phase separation. Further detailed characterizations using spectroelectrochemistry, X-ray photoelectron spectroscopy (XPS) and grazing incidence wide-angle X-ray diffraction (GIWAXS) provide insight into the microstructural changes brought about by the crown ether additive that result in the desirable characteristics of the modified PEDOT:PSS film.
URI: https://hdl.handle.net/10356/160055
ISSN: 2051-6355
DOI: 10.1039/D2MH00496H
DOI (Related Dataset): 10.21979/N9/RBZZBO
Schools: School of Electrical and Electronic Engineering 
School of Materials Science and Engineering 
Rights: © 2022 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles

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