Özdemir, Ali Deniz ; Barua, Pramit ; Pyatkov, Felix ; Hennrich, Frank ; Chen, Yuan ; Wenzel, Wolfgang ; Krupke, Ralph ; Fediai, Artem (2021)
Contact spacing controls the on-current for all-carbon field effect transistors.
In: Communications Physics, 4 (1)
doi: 10.1038/s42005-021-00747-5
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
All-carbon field-effect transistors, which combine carbon nanotubes and graphene hold great promise for many applications such as digital logic devices and single-photon emitters. However, the understanding of the physical properties of carbon nanotube (CNT)/graphene hybrid systems in such devices remained limited. In this combined experimental and theoretical study, we use a quantum transport model for field-effect transistors based on graphene electrodes and CNT channels to explain the experimentally observed low on currents. We find that large graphene/CNT spacing and short contact lengths limit the device performance. We have also elucidated in this work the experimentally observed ambipolar transport behavior caused by the flat conduction- and valence-bands and describe non-ideal gate-control of the contacts and channel region by the quantum capacitance of graphene and the carbon nanotube. We hope that our insights will accelerate the design of efficient all-carbon field-effect transistors.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Özdemir, Ali Deniz ; Barua, Pramit ; Pyatkov, Felix ; Hennrich, Frank ; Chen, Yuan ; Wenzel, Wolfgang ; Krupke, Ralph ; Fediai, Artem |
| Art des Eintrags: | Bibliographie |
| Titel: | Contact spacing controls the on-current for all-carbon field effect transistors |
| Sprache: | Englisch |
| Publikationsjahr: | 18 November 2021 |
| Ort: | London |
| Verlag: | Springer Nature |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Communications Physics |
| Jahrgang/Volume einer Zeitschrift: | 4 |
| (Heft-)Nummer: | 1 |
| Kollation: | 12 Seiten |
| DOI: | 10.1038/s42005-021-00747-5 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | All-carbon field-effect transistors, which combine carbon nanotubes and graphene hold great promise for many applications such as digital logic devices and single-photon emitters. However, the understanding of the physical properties of carbon nanotube (CNT)/graphene hybrid systems in such devices remained limited. In this combined experimental and theoretical study, we use a quantum transport model for field-effect transistors based on graphene electrodes and CNT channels to explain the experimentally observed low on currents. We find that large graphene/CNT spacing and short contact lengths limit the device performance. We have also elucidated in this work the experimentally observed ambipolar transport behavior caused by the flat conduction- and valence-bands and describe non-ideal gate-control of the contacts and channel region by the quantum capacitance of graphene and the carbon nanotube. We hope that our insights will accelerate the design of efficient all-carbon field-effect transistors. |
| Freie Schlagworte: | Electronic devices, Electronic properties and materials |
| ID-Nummer: | Artikel-ID: 246 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Molekulare Nanostrukturen |
| Hinterlegungsdatum: | 26 Sep 2024 07:24 |
| Letzte Änderung: | 26 Sep 2024 07:24 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Contact spacing controls the on-current for all-carbon field effect transistors. (deposited 25 Sep 2024 11:52)
- Contact spacing controls the on-current for all-carbon field effect transistors. (deposited 26 Sep 2024 07:24) [Gegenwärtig angezeigt]
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