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Journal article
Covalently interconnected transition metal dichalcogenide networks via defect engineering for high-performance electronic devices
Nature nanotechnology, v 16(5), pp 592-598
01 May 2021
PMID: 33633405
Abstract
A defect-engineering strategy exploiting dithiolated molecules enables the formation of covalently interconnected networks based on solution-processed transition metal disulfides, leading to devices with enhanced electrical performance and improved characteristics.
Solution-processed semiconducting transition metal dichalcogenides are at the centre of an ever-increasing research effort in printed (opto)electronics. However, device performance is limited by structural defects resulting from the exfoliation process and poor inter-flake electronic connectivity. Here, we report a new molecular strategy to boost the electrical performance of transition metal dichalcogenide-based devices via the use of dithiolated conjugated molecules, to simultaneously heal sulfur vacancies in solution-processed transition metal disulfides and covalently bridge adjacent flakes, thereby promoting percolation pathways for the charge transport. We achieve a reproducible increase by one order of magnitude in field-effect mobility (mu(FE)), current ratio (I-ON/I-OFF) and switching time (tau(S)) for liquid-gated transistors, reaching 10(-2) cm(2) V-1 s(-1), 10(4) and 18 ms, respectively. Our functionalization strategy is a universal route to simultaneously enhance the electronic connectivity in transition metal disulfide networks and tailor on demand their physicochemical properties according to the envisioned applications.
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Details
- Title
- Covalently interconnected transition metal dichalcogenide networks via defect engineering for high-performance electronic devices
- Creators
- Stefano Ippolito - Université de StrasbourgAdam G. Kelly - Trinity College DublinRafael Furlan de Oliveira - Univ Strasbourg, CNRS, UMR 7006, ISIS, Strasbourg, FranceMarc-Antoine Stoeckel - Univ Strasbourg, CNRS, UMR 7006, ISIS, Strasbourg, FranceDaniel Iglesias - Université de StrasbourgAhin Roy - Trinity College DublinClive Downing - Trinity College DublinZan Bian - University of CambridgeLucia Lombardi - University of CambridgeYarjan Abdul Samad - University of CambridgeValeria Nicolosi - Trinity College DublinAndrea C. Ferrari - University of CambridgeJonathan N. Coleman - Trinity College DublinPaolo Samori - Univ Strasbourg, CNRS, UMR 7006, ISIS, Strasbourg, France
- Publication Details
- Nature nanotechnology, v 16(5), pp 592-598
- Publisher
- NATURE PORTFOLIO
- Number of pages
- 7
- Grant note
- EP/K01711X/1; EP/K017144/1; EP/N010345/1 / EPSRC; UK Research & Innovation (UKRI); Engineering & Physical Sciences Research Council (EPSRC) GA-833707; GA-694101 / ERC; European Research Council (ERC) EP/K01711X/1; EP/K017144/1; EP/N010345/1; EP/L016057/1 / International Center for Frontier Research in Chemistry (icFRC), EPSRC Science Foundation Ireland (SFI) EU; European Union (EU) European Commission through the Graphene Flagship ANR-10-LABX-0026 CSC; ANR-11-LABX-0058 NIE; ANR-10-120 IDEX-0002-02 / Agence Nationale de la Recherche through the Labex projects; Agence Nationale de la Recherche (ANR); Agence nationale pour le developpement de la recherche en sante (ANDRS); Agence Nationale Des Plantes Medicinales Et Aromatiques, ANPMA, Morocco Faraday Institution; The Faraday Institution
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000621728700003
- Scopus ID
- 2-s2.0-85101756232
- Other Identifier
- 991021931898104721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology