Microstructural control suppresses thermal activation of electron transport at room temperature in polymer transistors

Autor: Mario Caironi, Michael Sommer, Natalie Stingelin, Daniele Fazzi, Jaime Martin, Fritz Nübling, Eliot Gann, Michael Ryan Hansen, Christopher R. McNeill, Alessandro Luzio, Martin Brinkmann, Philipp Selter
Přispěvatelé: European Commission, Luzio A, Nubling F, Martin J, Fazzi D, Selter P, Gann E, McNeill CR, Brinkmann M, Hansen MR, Stingelin N, Sommer M, Caironi M, Istituto Italiano di Tecnologia (IIT), Chemnitz University of Technology / Technische Universität Chemnitz, University of the Basque Country [Bizkaia] (UPV/EHU), Max-Planck-Institut für Kohlenforschung (Coal Research), Max-Planck-Gesellschaft, Westfälische Wilhelms-Universität Münster (WWU), Monash University [Clayton], Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Georgia Institute of Technology [Atlanta], Brinkmann, Martin, University of the Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2019
Předmět:
0301 basic medicine
polymers
charge transport
polarons
DFT
structural control
[CHIM.POLY] Chemical Sciences/Polymers
Materials science
Annealing (metallurgy)
Science
design
General Physics and Astronomy
FOS: Physical sciences
02 engineering and technology
Activation energy
Electron
General Biochemistry
Genetics and Molecular Biology
Article
03 medical and health sciences
Delocalized electron
Electronic and spintronic devices
Thermal
Electronic devices
lcsh:Science
chemistry.chemical_classification
Condensed Matter - Materials Science
Multidisciplinary
molecular-structure
field-effect transistors
Materials Science (cond-mat.mtrl-sci)
General Chemistry
Polymer
disorder
021001 nanoscience & nanotechnology
Electron transport chain
high-mobility
organic transistors
[SPI.TRON] Engineering Sciences [physics]/Electronics
Electrical and electronic engineering
[SPI.TRON]Engineering Sciences [physics]/Electronics
band-like
030104 developmental biology
[CHIM.POLY]Chemical Sciences/Polymers
chemistry
Chemical physics
Excited state
range
lcsh:Q
0210 nano-technology
charge-transport
performance
Zdroj: Nature Communications
Addi. Archivo Digital para la Docencia y la Investigación
instname
Nature Communications, Nature Publishing Group, 2019, 10, pp.3365. ⟨10.1038/s41467-019-11125-9⟩
Nature Communications, Vol 10, Iss 1, Pp 1-13 (2019)
Nature Communications, 2019, 10, pp.3365. ⟨10.1038/s41467-019-11125-9⟩
ISSN: 2041-1723
DOI: 10.48550/arxiv.1911.12750
Popis: Recent demonstrations of inverted thermal activation of charge mobility in polymer field-effect transistors have excited the interest in transport regimes not limited by thermal barriers. However, rationalization of the limiting factors to access such regimes is still lacking. An improved understanding in this area is critical for development of new materials, establishing processing guidelines, and broadening of the range of applications. Here we show that precise processing of a diketopyrrolopyrrole-tetrafluorobenzene-based electron transporting copolymer results in single crystal-like and voltage-independent mobility with vanishing activation energy above 280 K. Key factors are uniaxial chain alignment and thermal annealing at temperatures within the melting endotherm of films. Experimental and computational evidences converge toward a picture of electrons being delocalized within crystalline domains of increased size. Residual energy barriers introduced by disordered regions are bypassed in the direction of molecular alignment by a more efficient interconnection of the ordered domains following the annealing process.
Though solution-processed conjugated polymers with inverted temperature activated transport have been reported, the origin of this behaviour is unclear. Here, the authors realize temperature-independent electron transport above 280 K in a donor-acceptor copolymer through microstructural engineering.
Databáze: OpenAIRE
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