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Tuning the work fun...
Tuning the work function of graphene-on-quartz with a high weight molecular acceptor
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- Christodoulou, C. (author)
- Humboldt University, Germany
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- Giannakopoulos, A. (author)
- University of Mons, Belgium
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- Nardi, M. V. (author)
- Humboldt University, Germany
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- Ligorio, G. (author)
- Humboldt University, Germany
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- Oehzelt, M. (author)
- Humboldt University, Germany Helmholtz Zentrum Berlin Mat and Energie GmbH, Germany
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- Chen, L. (author)
- University of Mons, Belgium
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- Pasquali, L. (author)
- University of Modena and Reggio Emilia, Italy IOM CNR, Italy University of Johannesburg, South Africa
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- Timpel, M. (author)
- Humboldt University, Germany
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- Giglia, A. (author)
- IOM CNR, Italy
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- Nannarone, S. (author)
- University of Modena and Reggio Emilia, Italy IOM CNR, Italy
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- Norman, P. (author)
- Linköpings universitet,Beräkningsfysik,Tekniska högskolan
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- Linares, Mathieu (author)
- Linköpings universitet,Beräkningsfysik,Tekniska högskolan
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- Parvez, K. (author)
- Max Planck Institute Polymer Research, Germany
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- Müllen, K. (author)
- Max Planck Institute Polymer Research, Germany
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- Beljonne, D. (author)
- University of Mons, Belgium
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- Koch, N. (author)
- Humboldt University, Germany Helmholtz Zentrum Berlin Mat and Energie GmbH, Germany
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(creator_code:org_t)
- 2014-02-26
- 2014
- English.
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In: The Journal of Physical Chemistry C. - : American Chemical Society (ACS). - 1932-7447 .- 1932-7455. ; 118:9, s. 4784-4790
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Ultraviolet and X-ray photoelectron spectroscopies in combination with density functional theory (DFT) calculations were used to study the change in the work function (Φ) of graphene, supported by quartz, as induced by adsorption of hexaazatriphenylene-hexacarbonitrile (HATCN). Near edge X-ray absorption fine structure spectroscopy (NEXAFS) and DFT modeling show that a molecular-density-dependent reorientation of HATCN from a planar to a vertically inclined adsorption geometry occurs upon increasing surface coverage. This, in conjunction with the orientation-dependent magnitude of the interface dipole, allows one to explain the evolution of graphene Φ from 4.5 eV up to 5.7 eV, rendering the molecularly modified graphene-on-quartz a highly suitable hole injection electrode.
Subject headings
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
Keyword
- Adsorption geometries
- DFT modeling
- Hole injection
- Interface dipole
- Near edge x-ray absorption fine structure spectroscopies
- Surface coverages
- Adsorption
- Quartz
- Work function
- X ray absorption fine structure spectroscopy
- X ray photoelectron spectroscopy
- Graphene
- TECHNOLOGY
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Christodoulou, C ...
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Giannakopoulos, ...
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Nardi, M. V.
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Ligorio, G.
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Oehzelt, M.
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Chen, L.
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show more...
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Pasquali, L.
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Timpel, M.
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Giglia, A.
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Nannarone, S.
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Norman, P.
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Linares, Mathieu
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Parvez, K.
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Müllen, K.
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Beljonne, D.
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Koch, N.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Theoretical Chem ...
- Articles in the publication
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The Journal of P ...
- By the university
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Royal Institute of Technology
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Linköping University