Journal article
Unveiling Charge-Transport Mechanisms in Electronic Devices Based on Defect-Engineered MoS2 Covalent Networks
Advanced materials (Weinheim), v 35(15), 2211157
01 Apr 2023
PMID: 36648210
Abstract
Device performance of solution-processed 2D semiconductors in printed electronics has been limited so far by structural defects and high interflake junction resistance. Covalently interconnected networks of transition metal dichalcogenides potentially represent an efficient strategy to overcome both limitations simultaneously. Yet, the charge-transport properties in such systems have not been systematically researched. Here, the charge-transport mechanisms of printed devices based on covalent MoS2 networks are unveiled via multiscale analysis, comparing the effects of aromatic versus aliphatic dithiolated linkers. Temperature-dependent electrical measurements reveal hopping as the dominant transport mechanism: aliphatic systems lead to 3D variable range hopping, unlike the nearest neighbor hopping observed for aromatic linkers. The novel analysis based on percolation theory attributes the superior performance of devices functionalized with pi-conjugated molecules to the improved interflake electronic connectivity and formation of additional percolation paths, as further corroborated by density functional calculations. Valuable guidelines for harnessing the charge-transport properties in MoS2 devices based on covalent networks are provided.
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Details
- Title
- Unveiling Charge-Transport Mechanisms in Electronic Devices Based on Defect-Engineered MoS2 Covalent Networks
- Creators
- Stefano Ippolito - Université de StrasbourgFrancesca Urban - Centre National de la Recherche ScientifiqueWenhao Zheng - Max Planck Institute for Polymer ResearchOnofrio Mazzarisi - Max Planck Institute for Mathematics in the SciencesCataldo Valentini - Université de StrasbourgAdam G. Kelly - Trinity College DublinSai Manoj Gali - University of MonsMischa Bonn - Max Planck Institute for Polymer ResearchDavid Beljonne - University of MonsFederico Corberi - University of SalernoJonathan N. Coleman - Advanced Materials and BioEngineering ResearchHai I. Wang - Max Planck Institute for Polymer ResearchPaolo Samori - Univ Strasbourg, ISIS UMR 7006, CNRS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France
- Publication Details
- Advanced materials (Weinheim), v 35(15), 2211157
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- GA-833707 / European Commission through the ERC Science Foundation Ireland (SFI) Walloon Region FUTURE-PRINT ANR-10-IDEX-0002 / Belgian National Fund for Scientific Research (FRS-FNRS) within the Consortium des Equipements de Calcul Intensif (CECI) 1117545 / Marie Sklodowska-Curie project ULTIMATE International Center for Frontier Research in Chemistry (icFRC) GA-813036 / Graphene Flagship Core 3 project Institut Universitaire de France (IUF) BMBF; Federal Ministry of Education & Research (BMBF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000942788800001
- Scopus ID
- 2-s2.0-85149208003
- Other Identifier
- 991021931767204721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter