Single‐Component CMOS‐Like Logic using Diketopyrrolopyrrole‐Based Ambipolar Organic Electrochemical Transistors

• Published in: Advanced functional materials Vol. 31; no. 45
• Main Authors: Samuel, Jibin J., Garudapalli, Ashutosh, Mohapatra, Aiswarya Abhisek, Gangadharappa, Chandrasekhar, Patil, Satish, Aetukuri, Naga Phani B.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.11.2021
• Subjects: ambipolar inverters; ambipolar organic electrochemical transistors; Aqueous environments; Bioelectricity; CMOS; diketopyrrolopyrrole‐based polymers; Figure of merit; Logic circuits; Materials science; Production costs; Semiconductor devices; single component OECT logic; Transistors; Triethylene glycol
• DOI: 10.1002/adfm.202102903
• ISSN: 1616-301X

Complementary circuits based on organic electrochemical transistors (OECTs) are attractive for the development of inexpensive and disposable point‐of‐care bioelectronic devices. Ambipolar OECTs, which employ a single channel material, could decrease the fabrication complexity and manufacturing costs of such circuits. An ideal channel material for ambipolar OECTs should be electrochemically stable in aqueous environments, afford facile ion insertion for both cations and anions, and also facilitate high and balanced electron and hole transport. In this study, triethylene glycol functionalized diketopyrrolopyrrole (DPP)‐based polymer is proposed for the development of ambipolar OECTs. It is shown that DPP‐based OECTs have a high and comparable figure of merit for both n‐ and p‐type operations. Logic NOT, NAND, and NOR operations with corresponding complementary circuits constructed from identical DPP‐based OECT devices are demonstrated. This study is an important step toward the development of sophisticated complementary metal–oxide–semiconductor‐like logic circuits using single‐component OECTs. 2DPP‐OD‐TEG with a diketopyrrolopyrrole backbone is proposed as an organic electrochemical transistor (OECT) channel material for ambipolar OECTs. OECTs with 2DPP‐OD‐TEG channels afford balanced n‐ and p‐type performance, enabling DPP‐based ambipolar OECTs that are configured into CMOS‐like logic NOT, NAND, and NOR gates.