Threshold Voltage Control in Dual-Gate Organic Electrochemical Transistors

Research output: Contribution to journalResearch articleContributedpeer-review



Organic electrochemical transistors (OECTs) based on Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) are a benchmark system in organic bioelectronics. In particular, the superior mechanical properties and the ionic-electronic transduction yield excellent potential for the field of implantable or wearable sensing technology. However, depletion-mode operation PEDOT:PSS-based OECTs cause high static power dissipation in electronic circuits, limiting their application in electronic systems. Hence, having control over the threshold voltage is of utmost technological importance. Here, PEDOT:PSS-based dual-gate OECTs with solid-state electrolyte where the threshold voltage is seamlessly adjustable during operation are demonstrated. It is shown that the degree of threshold voltage tuning linearly depends on the gate capacitance, which is a straightforward approach for circuit designers to adjust the threshold voltage only by the device dimensions. The PEDOT:PSS-based dual-gate OECTs show excellent device performance and can be pushed to accumulation-mode operation, resulting in a simplified and relaxed design of complementary inverters.


Original languageEnglish
Article number2201914
Number of pages7
JournalAdvanced materials interfaces
Publication statusPublished - 26 Oct 2022

External IDs

Mendeley f385ff22-c371-3363-b25a-fea156ec79be
ORCID /0000-0003-3295-6675/work/142240205
ORCID /0000-0002-9773-6676/work/142247054



  • dual-gates, inverters, organic electrochemical transistors, PEDOT:PSS, threshold voltage control