| Synthesis, Characterization, Electronic and Gas-Sensing Properties towards H(2) and CO of Transparent, Large-Area, Low-Layer Graphene. | |
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MedLine Citation:
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PMID: 23032996 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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 (R(sheet) ) of approximately 1435 Ω per □, a contact resistance (R(c) ) of about 127 Ω, and a specific contact resistance (R(sc) ) of approximately 2.8×10(-4) Ω cm(2) for the CVD graphene samples. Transistor output characteristics for the graphene sample demonstrated linear current/voltage behavior. A current versus voltage (I(ds) -V(ds) ) 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 H(2) and CO. At 300 °C, a sensor response of approximately 29 towards low H(2) concentrations (1 vol %) was observed, which is by a factor of four higher than recently reported. |
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Authors:
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Emine Kayhan; Ravi Mohan Prasad; Alexander Gurlo; Oktay Yilmazoglu; Jörg Engstler; Emanuel Ionescu; Songhak Yoon; Anke Weidenkaff; Jörg J Schneider |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-10-2 |
Journal Detail:
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Title: Chemistry (Weinheim an der Bergstrasse, Germany) Volume: - ISSN: 1521-3765 ISO Abbreviation: Chemistry Publication Date: 2012 Oct |
Date Detail:
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Created Date: 2012-10-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9513783 Medline TA: Chemistry Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Technische Universität Darmstadt, Eduard-Zintl-Institut, Fachbereich Chemie, Fachgebiet Anorganische Chemie, Petersenstrasse 18, 64287 Darmstadt (Germany), Fax: (+49) 6151-163470. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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