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Periodic Nanoarray ...
Periodic Nanoarray of Graphene pn-Junctions on Silicon Carbide Obtained by Hydrogen Intercalation
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- Karakachian, Hrag (author)
- Max Planck Inst Festkorperforsch, Germany,Max Planck Institute for Solid State Research
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- Rosenzweig, Philipp (author)
- Max Planck Inst Festkorperforsch, Germany,Max Planck Institute for Solid State Research
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- Nguyen, T. T. Nhung (author)
- Tech Univ Chemnitz, Germany,Chemnitz University of Technology
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- Matta, Bharti (author)
- Max Planck Inst Festkorperforsch, Germany,Max Planck Institute for Solid State Research
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- Zakharov, Alexei A. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, Sweden
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- Yakimova, Rositsa, 1942- (author)
- Linköping University,Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Balasubramanian, Thiagarajan (author)
- Lund Univ, Sweden,Skåne University Hospital
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- Mamiyev, Zamin (author)
- Tech Univ Chemnitz, Germany,Chemnitz University of Technology
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- Tegenkamp, Christoph (author)
- Tech Univ Chemnitz, Germany,Chemnitz University of Technology
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- Polley, Craig M. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lund Univ, Sweden
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- Starke, Ulrich (author)
- Max Planck Inst Festkorperforsch, Germany,Max Planck Institute for Solid State Research
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(creator_code:org_t)
- 2022-01-27
- 2022
- English.
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In: Advanced Functional Materials. - : Wiley-V C H Verlag GMBH. - 1616-301X .- 1616-3028. ; 32:18
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Abstract
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- Graphene pn-junctions offer a rich portfolio of intriguing physical phenomena. They stand as the potential building blocks for a broad spectrum of future technologies, ranging from electronic lenses analogous to metamaterials in optics, to high-performance photodetectors important for a variety of optoelectronic applications. The production of graphene pn-junctions and their precise structuring at the nanoscale remains to be a challenge. In this work, a scalable method for fabricating periodic nanoarrays of graphene pn-junctions on a technologically viable semiconducting SiC substrate is introduced. Via H-intercalation, 1D confined armchair graphene nanoribbons are transformed into a single 2D graphene sheet rolling over 6H-SiC mesa structures. Due to the different surface terminations of the basal and vicinal SiC planes constituting the mesa structures, different types of charge carriers are locally induced into the graphene layer. Using angle-resolved photoelectron spectroscopy, the electronic band structure of the two graphene regions are selectively measured, finding two symmetrically doped phases with p-type being located on the basal planes and n-type on the facets. The results demonstrate that through a careful structuring of the substrate, combined with H-intercalation, integrated networks of graphene pn-junctions could be engineered at the nanoscale, paving the way for the realization of novel optoelectronic device concepts.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- 6H-SiC mesa structures; armchair graphene nanoribbon; intercalation; pn-junction; quasi-free monolayer graphene
Publication and Content Type
- ref (subject category)
- art (subject category)
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Karakachian, Hra ...
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Rosenzweig, Phil ...
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Nguyen, T. T. Nh ...
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Matta, Bharti
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Zakharov, Alexei ...
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Yakimova, Rosits ...
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show more...
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Balasubramanian, ...
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Mamiyev, Zamin
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Tegenkamp, Chris ...
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Polley, Craig M.
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Starke, Ulrich
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- By the university
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Linköping University
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Lund University