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Updated: Apr 21, 2026
Spray-Coated Melanin/PEDOT:PSS Films for Sustainable Organic Electrochemical Transistors
Published on: October 28, 2025
Microfluidic supercritical antisolvent continuous processing and direct spray-coating of poly(3-hexylthiophene)
Ricardo Couto1, Sylvain Chambon, Cyril Aymonier
1CNRS, Univ. Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France. mailto:marre@icmcb-bordeaux.cnrs.fr.
Abstract:
We report for the first time the use of a microfluidic supercritical antisolvent process (μSAS) to synthesize semiconducting polymer nanoparticles (NPs) of poly(3-hexylthiophene) (P3HT). Solvent-free P3HT NPs with average diameters as small as 36 ± 8 nm are obtained. They are continuously spray-coated on substrates to fabricate OFET devices, demonstrating hole mobility through the nanoparticle film equivalent to that of conventional spin-coated P3HT.
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