Kinetics and electrochemical transistor performance in pgBTTT polymers through ethylene glycol side chain modification and blending techniques

Kaishuai Zhang; Lize Bynens

doi:10.1117/12.3022519

19 June 2024 Kinetics and electrochemical transistor performance in pgBTTT polymers through ethylene glycol side chain modification and blending techniques

Kaishuai Zhang, Lize Bynens

Author Affiliations +

Proceedings Volume PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV; PC1301307 (2024) https://doi.org/10.1117/12.3022519
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

This study explores the impact of ethylene glycol side chain modification in pgBTTT polymers, a key component in organic electrochemical transistors. By varying the concentration of these side chains from 50% to 100%, we observed a significant influence on the polymers' volumetric capacitance, with an interesting deviation at 90% concentration. Additionally, we investigated the efficacy of blending techniques to enhance this capacitance. Two blending approaches were tested: pgBTTT with pBTTT (OR)2 and pgBTTT with pgBTTT-OEG-OR. These blends demonstrated superior volumetric capacitance compared to copolymers, especially at higher side chain ratios. Importantly, blends with matching side chain ratios exhibited improved kinetics in doping and dedoping processes. These findings offer valuable insights for optimizing the structure and performance of organic electrochemical devices, paving the way for more efficient and effective electrochemical transistors and mixed conductors.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kaishuai Zhang and Lize Bynens "Kinetics and electrochemical transistor performance in pgBTTT polymers through ethylene glycol side chain modification and blending techniques", Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC1301307 (19 June 2024); https://doi.org/10.1117/12.3022519

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