- Titel
- Hysteresis in Organic Electrochemical Transistors
- Untertitel
- Relation to the Electrochemical Properties of the Semiconductor
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-953387
- Quellenangabe
- Applied Sciences
Erscheinungsjahr: 2023
Jahrgang: 13
Heft: 9
E-ISSN: 2076-3417
Artikelnummer: 5754 - Erstveröffentlichung
- 2023
- Abstract (EN)
- The ability to bridge ionic and electronic transport coupled with large volumetric capacitance renders organic electrochemical transistors (OECTs) ideal candidates for bioelectronic applications. Adopting ionic-liquid-based solid electrolytes extends their applicability and facilitates large-area printable productions. However, OETCs employing solid electrolytes tend to show a pronounced hysteresis in the transfer curve. A detailed understanding of the hysteresis is crucial for their accurate characterizations and reliable applications. Here, we demonstrated fully photopatternable poly(3,4-ethylenedioxythiophene):tosylate (PEDOT:Tos)- based OECTs incorporating the ionic liquid [EMIM][EtSO4] in a solid electrolyte (SE). The PEDOT:Tos films deposited through vapor phase polymerization (VPP) were annealed for different durations after the polymerization step. Upon rinsing with ethanol and the deposition of the SE, the OECTs made of these films showed impressive bias stress stability under prolonged operation cycles, a high switching ratio, a low threshold voltage, and a high transconductance. Furthermore, by taking transfer measurements with different sweep rates, we revealed two distinct regimes of hysteresis: kinetic hysteresis and non-kinetic hysteresis. We observed pronounced changes in these regimes after annealing. Finally, impedance spectroscopy exhibited that the PEDOT:Tos turned from a Faradaic to a non-Faradaic response through annealing, explaining the observed hysteresis changes in both regimes.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift „Applied Sciences” im MDPI Verlag erschienen ist.
DOI: 10.3390/app13095754 - Freie Schlagwörter (EN)
- organic electrochemical transistors, organic mixed ionic–electronic conductors, hysteresis, vapor phase polymerization, bias stress
- Klassifikation (DDC)
- 600
- Verlag
- Molecular Diversity Preservation International (MDPI), Basel
- Förder- / Projektangaben
- Bundesministerium für Bildung und Forschung (BMBF)
BAYesianische Inferenz mit organischen elektrochemischen Transistoren für neuromorphe Sensoren
(BAYOEN)
ID: 01IS21089 - Europäischer Sozialfonds (ESF)
Re-Learning
ID: 100382146 - Deutsche Forschungsgemeinschaft (DFG)
ID: KL 2961/5-1 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-953387
- Veröffentlichungsdatum Qucosa
- 16.05.2025
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY 4.0