講演情報
[7p-N307-6]Improved Electrical Characteristics of Reprocessed Self-Doped PEDOT for OECT Applications
〇Ruifeng Xu1, Kento Yamagishi1, Takao Someya1, Tomoyuki Yokota1 (1.UTokyo)
キーワード：
organic semiconductor、Organic Electrochemical Transistor (OECT)、Self-doped PEDOT (S-PEDOT)
Organic electrochemical transistors (OECTs) are promising for neuromorphic electronics due to their mixed ionic-electronic transport and biocompatibility. PEDOT:PSS is a typical channel material with high conductivity but suffers from limited stability under heat and humidity. Self-doped PEDOT (S-PEDOT) offers better stability but exhibits lower drain current (Id) and transconductance (Gm). In this work, we propose a reprocessing method for S-PEDOT involving filtration, freeze-drying, and re-dissolution. The reprocessed S-PEDOT shows a remarkable 699% increase in Id compared to the original solution. Interestingly, adding 5 vol% DMSO or EG to the reprocessed S-PEDOT reduced this improvement, yielding only 468% and 601% increases, respectively. Our results suggest that reprocessing alone significantly enhances the electrical performance of S-PEDOT without the need for additives, making it a promising material for stable and efficient OECTs in neuromorphic applications.