Water stable molecular n-doping produces organic electrochemical transistors with high transconductance and record stability
| Autor: | Abdul-Hamid M. Emwas, Maximillian Moser, Iain McCulloch, Xingxing Chen, Thomas D. Anthopoulos, Shofarul Wustoni, Bryan D. Paulsen, Hendrik Faber, Jonathan Rivnay, Sahika Inal, Achilleas Savva, Iuliana P. Maria, Tania C. Hidalgo, Georgios Nikiforidis, Leonidas Tsetseris, Alexandra F. Paterson |
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| Přispěvatelé: | Savva, Achilleas [0000-0002-0197-0290], Wustoni, Shofarul [0000-0002-3059-4503], Tsetseris, Leonidas [0000-0002-0330-0813], Paulsen, Bryan D [0000-0002-0923-8475], Hidalgo, Tania C [0000-0001-5299-9539], Rivnay, Jonathan [0000-0002-0602-6485], Anthopoulos, Thomas D [0000-0002-0978-8813], Inal, Sahika [0000-0002-1166-1512], Apollo - University of Cambridge Repository |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Science Transconductance General Physics and Astronomy 02 engineering and technology Electrolyte Conjugated polymers 010402 general chemistry 01 natural sciences Capacitance Article 4016 Materials Engineering General Biochemistry Genetics and Molecular Biology law.invention law Electronic devices lcsh:Science 40 Engineering chemistry.chemical_classification 3403 Macromolecular and Materials Chemistry Bioelectronics Multidisciplinary 34 Chemical Sciences Dopant business.industry Doping Transistor General Chemistry Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Optoelectronics lcsh:Q 0210 nano-technology business |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | From established to emergent technologies, doping plays a crucial role in all semiconducting devices. Doping could, theoretically, be an excellent technique for improving repressively low transconductances in n-type organic electrochemical transistors – critical for advancing logic circuits for bioelectronic and neuromorphic technologies. However, the technical challenge is extreme: n-doped polymers are unstable in electrochemical transistor operating environments, air and water (electrolyte). Here, the first demonstration of doping in electron transporting organic electrochemical transistors is reported. The ammonium salt tetra-n-butylammonium fluoride is simply admixed with the conjugated polymer poly(N,N’-bis(7-glycol)-naphthalene-1,4,5,8-bis(dicarboximide)-co-2,2’-bithiophene-co-N,N’-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide), and found to act as a simultaneous molecular dopant and morphology-additive. The combined effects enhance the n-type transconductance with improved channel capacitance and mobility. Furthermore, operational and shelf-life stability measurements showcase the first example of water-stable n-doping in a polymer. Overall, the results set a precedent for doping/additives to impact organic electrochemical transistors as powerfully as they have in other semiconducting devices. Improving electron transport and stability of n-type organic electrochemical transistors (OECTs) is required to realize a commercially-viable technology for bioelectronics applications. Here, the authors report water-stable doped n-type OECTs with enhanced transconductance and record stability. |
| Databáze: | OpenAIRE |
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