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19 June 2024 Removal of homocoupling defects in the OECT benchmark material, pgBTT
Lize Bynens, Jochen Vanderspikken, Adam Marks, Arwin Goossens, Tyler J. Quill, Garret Lecroy, Christina Cheng, Yeongmin Park, Laurence Lutsen, Alberto Salleo, Koen Vandewal, Wouter Maes
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Proceedings Volume PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV; PC1301305 (2024) https://doi.org/10.1117/12.3017823
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
State-of-the-art alternating semiconducting polymers, synthesized via established academic protocols, often contain homocoupling defects, causing the true structure to deviate from the anticipated perfectly alternating polymer backbone. These structural defects significantly hinder the reproducibility across different polymer batches, posing a challenge to the commercial viability of the organic semiconductor field, while simultaneously imposing performance limitations in different applications by creating defected chains, limiting the attainable molecular weight and increasing the dispersity. In this study, two synthesis methods – conventional Stille polymerization and a novel defect-free route – are employed to create the p-type accumulation mode OECT (organic electrochemical transistor) benchmark material pgBTTT. The effect of homocoupling, and its absence, is investigated by comparing the bulk properties of the two polymers and evaluating their respective OECT performances.
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Lize Bynens, Jochen Vanderspikken, Adam Marks, Arwin Goossens, Tyler J. Quill, Garret Lecroy, Christina Cheng, Yeongmin Park, Laurence Lutsen, Alberto Salleo, Koen Vandewal, and Wouter Maes "Removal of homocoupling defects in the OECT benchmark material, pgBTT", Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC1301305 (19 June 2024); https://doi.org/10.1117/12.3017823
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KEYWORDS
Polymers
Electrodes
Ion channels
Semiconductors
Organic photovoltaics
Organic semiconductors
Polymerization
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