Kayhan, Emine ; Prasad, Ravi Mohan ; Gurlo, Alexander ; Yilmazoglu, Oktay ; Engstler, Jörg ; Ionescu, Emanuel ; Yoon, Songhak ; Weidenkaff, Anke ; Schneider, Jörg J. (2012)
Synthesis, Characterization, Electronic and Gas-Sensing Properties towards H2and CO of Transparent, Large-Area, Low-Layer Graphene.
In: Chemistry - A European Journal, 18 (47)
doi: 10.1002/chem.201201880
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Low-layered, transparent graphene is accessible by a chemical vapor deposition (CVD) technique on a Ni-catalyst layer, which is deposited on a <100> silicon substrate. The number of graphene layers on the substrate is controlled by the grain boundaries in the Ni-catalyst layer and can be studied by micro Raman analysis. Electrical studies showed a sheet resistance (Rsheet) of approximately 1435 Ω per □, a contact resistance (Rc) of about 127 Ω, and a specific contact resistance (Rsc) of approximately 2.8×10−4 Ω cm2 for the CVD graphene samples. Transistor output characteristics for the graphene sample demonstrated linear current/voltage behavior. A current versus voltage (Ids–Vds) plot clearly indicates a p-conducting characteristic of the synthesized graphene. Gas-sensor measurements revealed a high sensor activity of the low-layer graphene material towards H2 and CO. At 300 °C, a sensor response of approximately 29 towards low H2 concentrations (1 vol %) was observed, which is by a factor of four higher than recently reported.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Kayhan, Emine ; Prasad, Ravi Mohan ; Gurlo, Alexander ; Yilmazoglu, Oktay ; Engstler, Jörg ; Ionescu, Emanuel ; Yoon, Songhak ; Weidenkaff, Anke ; Schneider, Jörg J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Synthesis, Characterization, Electronic and Gas-Sensing Properties towards H2and CO of Transparent, Large-Area, Low-Layer Graphene |
| Sprache: | Englisch |
| Publikationsjahr: | 19 November 2012 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Chemistry - A European Journal |
| Jahrgang/Volume einer Zeitschrift: | 18 |
| (Heft-)Nummer: | 47 |
| DOI: | 10.1002/chem.201201880 |
| Kurzbeschreibung (Abstract): | Low-layered, transparent graphene is accessible by a chemical vapor deposition (CVD) technique on a Ni-catalyst layer, which is deposited on a <100> silicon substrate. The number of graphene layers on the substrate is controlled by the grain boundaries in the Ni-catalyst layer and can be studied by micro Raman analysis. Electrical studies showed a sheet resistance (Rsheet) of approximately 1435 Ω per □, a contact resistance (Rc) of about 127 Ω, and a specific contact resistance (Rsc) of approximately 2.8×10−4 Ω cm2 for the CVD graphene samples. Transistor output characteristics for the graphene sample demonstrated linear current/voltage behavior. A current versus voltage (Ids–Vds) plot clearly indicates a p-conducting characteristic of the synthesized graphene. Gas-sensor measurements revealed a high sensor activity of the low-layer graphene material towards H2 and CO. At 300 °C, a sensor response of approximately 29 towards low H2 concentrations (1 vol %) was observed, which is by a factor of four higher than recently reported. |
| Freie Schlagworte: | chemical vapor deposition electrical properties, graphene, Raman spectroscopy, sensors |
| Zusätzliche Informationen: | Dedicated to Professor Dr. Dieter Fenske on the occasion of his 70th birthday. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie |
| Hinterlegungsdatum: | 21 Mär 2013 08:15 |
| Letzte Änderung: | 13 Jan 2024 07:03 |
| PPN: | |
| Sponsoren: | TEM measurements were performed at the Ernst-Ruska-Zentrum für Elektronenmikroskopie (ER-C), Jülich, Germany, under the cooperative research program ERC-TUD 01 |
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