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http://hdl.handle.net/2445/209845
Title: | Nanoscale Operando Characterization of Electrolyte-Gated Organic Field-Effect Transistors Reveals Charge Transport Bottlenecks |
Author: | Tanwar, Shubham Millán Solsona, Rubén Ruiz-Molina, Sara Mas Torrent, Marta Kyndiah, Adrica Gomila Lluch, Gabriel |
Keywords: | Nanotecnologia Materials nanoestructurats Transistors Nanotechnology Nanostructured materials Transistors |
Issue Date: | 18-Dec-2023 |
Publisher: | Wiley-VCH |
Abstract: | Charge transport in electrolyte-gated organic field-effect transistors (EGOFETs) is governed by the microstructural property of the semiconducting thin film that is in direct contact with the electrolyte. Therefore, a comprehensive nanoscale operando characterization of the active channel is crucial to pinpoint various charge transport bottlenecks for rational and targeted optimization of the devices. Here, the local electrical properties of EGOFETs are systematically probed by in-liquid scanning dielectric microscopy (in-liquid SDM) and a direct picture of their functional mechanism at the nanoscale is provided across all operational regimes, starting from subthreshold, linear to saturation, until the onset of pinch-off. To this end, a robust interpretation framework of in-liquid SDM is introduced that enables quantitative local electric potential mapping directly from raw experimental data without requiring calibration or numerical simulations. Based on this development, a straightforward nanoscale assessment of various charge transport bottlenecks is performed, like contact access resistances, inter- and intradomain charge transport, microstructural inhomogeneities, and conduction anisotropy, which have been inaccessible earlier. Present results contribute to the fundamental understanding of charge transport in electrolyte-gated transistors and promote the development of direct structure–property–function relationships to guide future design rules. |
Note: | Reproducció del document publicat a: https://doi.org/10.1002/adma.202309767 |
It is part of: | Advanced Materials, 2023, vol. 36, num.13, p. 1-11 |
URI: | http://hdl.handle.net/2445/209845 |
Related resource: | https://doi.org/10.1002/adma.202309767 |
ISSN: | 0935-9648 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC)) |
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838766.pdf | 5.15 MB | Adobe PDF | View/Open |
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