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Chemin A, Levine I, Rusu M, Vaujour R, Knittel P, Reinke P, Hinrichs K, Unold T, Dittrich T, Petit T. Surface-Mediated Charge Transfer of Photogenerated Carriers in Diamond. SMALL METHODS 2023; 7:e2300423. [PMID: 37596059 DOI: 10.1002/smtd.202300423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/20/2023] [Indexed: 08/20/2023]
Abstract
Solvated electrons are highly reductive chemical species whose chemical properties remain largely unknown. Diamond materials are proposed as a promising emitter of solvated electrons and visible light excitation would enable solar-driven CO2 or N2 reductions reactions in aqueous medium. But sub-bandgap excitation remains challenging. In this work, the role of surface states on diamond materials for charge separation and emission in both gaseous and aqueous environments from deep UV to visible light excitation is elucidated. Four different X-ray and UV-vis spectroscopy methods are applied to diamond materials with different surface termination, doping and crystallinity. Surface states are found to dominate sub-bandgap charge transfer. However, the surface charge separation is drastically reduced for boron-doped diamond due to a very high density of bulk defects. In a gaseous atmosphere, the oxidized diamond surface maintains a negative electron affinity, allowing charge emission, due to remaining hydrogenated and hydroxylated groups. In an aqueous electrolyte, a photocurrent for illumination down to 3.5 eV is observed for boron-doped nanostructured diamond, independent of the surface termination. This study opens new perspectives on photo-induced interfacial charge transfer processes from metal-free semiconductors such as diamonds.
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Affiliation(s)
- Arsène Chemin
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
| | - Igal Levine
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
| | - Marin Rusu
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
| | - Rémi Vaujour
- École Normale Supérieure de Lyon, Lyon, 69342, France
| | - Peter Knittel
- Fraunhofer-Institut für Angewandte Festkörperphysik Freiburg, 79108, Freiburg, DE, Germany
| | - Philipp Reinke
- Fraunhofer-Institut für Angewandte Festkörperphysik Freiburg, 79108, Freiburg, DE, Germany
| | - Karsten Hinrichs
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., 12489, Berlin, DE, Germany
| | - Thomas Unold
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
| | - Thomas Dittrich
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
| | - Tristan Petit
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109, Berlin, DE, Germany
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2
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Sobaszek M, Brzhezinskaya M, Olejnik A, Mortet V, Alam M, Sawczak M, Ficek M, Gazda M, Weiss Z, Bogdanowicz R. Highly Occupied Surface States at Deuterium-Grown Boron-Doped Diamond Interfaces for Efficient Photoelectrochemistry. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2208265. [PMID: 36949366 DOI: 10.1002/smll.202208265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Polycrystalline boron-doped diamond is a promising material for high-power aqueous electrochemical applications in bioanalytics, catalysis, and energy storage. The chemical vapor deposition (CVD) process of diamond formation and doping is totally diversified by using high kinetic energies of deuterium substituting habitually applied hydrogen. The high concentration of deuterium in plasma induces atomic arrangements and steric hindrance during synthesis reactions, which in consequence leads to a preferential (111) texture and more effective boron incorporation into the lattice, reaching a one order of magnitude higher density of charge carriers. This provides the surface reconstruction impacting surficial populations of CC dimers, CH, CO groups, and COOH termination along with enhanced kinetics of their abstraction, as revealed by high-resolution core-level spectroscopies. A series of local densities of states were computed, showing a rich set of highly occupied and localized surface states for samples deposited in deuterium, negating the connotations of band bending. The introduction of enhanced incorporation of boron into (111) facet of diamond leads to the manifestation of surface electronic states below the Fermi level and above the bulk valence band edge. This unique electronic band structure affects the charge transfer kinetics, electron affinity, and diffusion field geometry critical for efficient electrolysis, electrocatalysis, and photoelectrochemistry.
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Affiliation(s)
- Michał Sobaszek
- Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Metrology and Optoelectronics, 11/12 Narutowicza Str., Gdansk, 80-233, Poland
| | - Maria Brzhezinskaya
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Adrian Olejnik
- Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Metrology and Optoelectronics, 11/12 Narutowicza Str., Gdansk, 80-233, Poland
| | - Vincent Mortet
- Czech Technical University in Prague, Faculty of Electrical Engineering, Technická 1902/2, Prague 6, 166 27, Czech Republic
| | - Mahebub Alam
- Czech Technical University in Prague, Faculty of Electrical Engineering, Technická 1902/2, Prague 6, 166 27, Czech Republic
| | - Mirosław Sawczak
- The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, Gdansk, 80-231, Poland
| | - Mateusz Ficek
- Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Metrology and Optoelectronics, 11/12 Narutowicza Str., Gdansk, 80-233, Poland
| | - Maria Gazda
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, Gdańsk, 80-233, Poland
| | - Zdeněk Weiss
- CSc, FZU - Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, Praha 8, 182 21, Czech Republic
| | - Robert Bogdanowicz
- Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Metrology and Optoelectronics, 11/12 Narutowicza Str., Gdansk, 80-233, Poland
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3
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Tesi L, Stemmler F, Winkler M, Liu SSY, Das S, Sun X, Zharnikov M, Ludwigs S, van Slageren J. Modular Approach to Creating Functionalized Surface Arrays of Molecular Qubits. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208998. [PMID: 36609776 DOI: 10.1002/adma.202208998] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/30/2022] [Indexed: 06/17/2023]
Abstract
The quest for developing quantum technologies is driven by the promise of exponentially faster computations, ultrahigh performance sensing, and achieving thorough understanding of many-particle quantum systems. Molecular spins are excellent qubit candidates because they feature long coherence times, are widely tunable through chemical synthesis, and can be interfaced with other quantum platforms such as superconducting qubits. A present challenge for molecular spin qubits is their integration in quantum devices, which requires arranging them in thin films or monolayers on surfaces. However, clear proof of the survival of quantum properties of molecular qubits on surfaces has not been reported so far. Furthermore, little is known about the change in spin dynamics of molecular qubits going from the bulk to monolayers. Here, a versatile bottom-up method is reported to arrange molecular qubits as functional groups of self-assembled monolayers (SAMs) on surfaces, combining molecular self-organization and click chemistry. Coherence times of up to 13 µs demonstrate that qubit properties are maintained or even enhanced in the monolayer.
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Affiliation(s)
- Lorenzo Tesi
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Friedrich Stemmler
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Mario Winkler
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Sherri S Y Liu
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Saunak Das
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Xiuming Sun
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Michael Zharnikov
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
| | - Sabine Ludwigs
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Joris van Slageren
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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4
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Das S, Nascimbeni G, de la Morena RO, Ishiwari F, Shoji Y, Fukushima T, Buck M, Zojer E, Zharnikov M. Porous Honeycomb Self-Assembled Monolayers: Tripodal Adsorption and Hidden Chirality of Carboxylate Anchored Triptycenes on Ag. ACS NANO 2021; 15:11168-11179. [PMID: 34125529 PMCID: PMC8320238 DOI: 10.1021/acsnano.1c03626] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Molecules with tripodal anchoring to substrates represent a versatile platform for the fabrication of robust self-assembled monolayers (SAMs), complementing the conventional monopodal approach. In this context, we studied the adsorption of 1,8,13-tricarboxytriptycene (Trip-CA) on Ag(111), mimicked by a bilayer of silver atoms underpotentially deposited on Au. While tripodal SAMs frequently suffer from poor structural quality and inhomogeneous bonding configurations, the triptycene scaffold featuring three carboxylic acid anchoring groups yields highly crystalline SAM structures. A pronounced polymorphism is observed, with the formation of distinctly different structures depending on preparation conditions. Besides hexagonal molecular arrangements, the occurrence of a honeycomb structure is particularly intriguing as such an open structure is unusual for SAMs consisting of upright-standing molecules. Advanced spectroscopic tools reveal an equivalent bonding of all carboxylic acid anchoring groups. Notably, density functional theory calculations predict a chiral arrangement of the molecules in the honeycomb network, which, surprisingly, is not apparent in experimental scanning tunneling microscopy (STM) images. This seeming discrepancy between theory and experiment can be resolved by considering the details of the actual electronic structure of the adsorbate layer. The presented results represent an exemplary showcase for the intricacy of interpreting STM images of complex molecular films. They are also further evidence for the potential of triptycenes as basic building blocks for generating well-defined layers with unusual structural motifs.
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Affiliation(s)
- Saunak Das
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Giulia Nascimbeni
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | | | - Fumitaka Ishiwari
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Yoshiaki Shoji
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Takanori Fukushima
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Manfred Buck
- EaStCHEM
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Egbert Zojer
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Michael Zharnikov
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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5
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Liu Y, Ornago L, Carlotti M, Ai Y, El Abbassi M, Soni S, Asyuda A, Zharnikov M, van der Zant HSJ, Chiechi RC. Intermolecular Effects on Tunneling through Acenes in Large-Area and Single-Molecule Junctions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:22776-22783. [PMID: 33093933 PMCID: PMC7569675 DOI: 10.1021/acs.jpcc.0c05781] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/14/2020] [Indexed: 06/11/2023]
Abstract
This paper describes the conductance of single-molecules and self-assembled monolayers comprising an oligophenyleneethynylene core, functionalized with acenes of increasing length that extend conjugation perpendicular to the path of tunneling electrons. In the Mechanically Controlled Break Junction (MCBJ) experiment, multiple conductance plateaus were identified. The high conductance plateau, which we attribute to the single molecule conformation, shows an increase of conductance as a function of acene length, in good agreement with theoretical predictions. The lower plateau is attributed to multiple molecules bridging the junctions with intermolecular interactions playing a role. In junctions comprising a self-assembled monolayer with eutectic Ga-In top-contacts (EGaIn), the pentacene derivative exhibits unusually low conductance, which we ascribe to the inability of these molecules to pack in a monolayer without introducing significant intermolecular contacts. This hypothesis is supported by the MCBJ data and theoretical calculations showing suppressed conductance through the PC films. These results highlight the role of intermolecular effects and junction geometries in the observed fluctuations of conductance values between single-molecule and ensemble junctions, and the importance of studying molecules in both platforms.
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Affiliation(s)
- Yuru Liu
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Luca Ornago
- Kavli
Institute of Nanoscience, Delft University
of Technology, Lorentzweg 1, Delft, 2628 CJ The Netherlands
| | - Marco Carlotti
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Yong Ai
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Maria El Abbassi
- Kavli
Institute of Nanoscience, Delft University
of Technology, Lorentzweg 1, Delft, 2628 CJ The Netherlands
| | - Saurabh Soni
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Andika Asyuda
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Michael Zharnikov
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Herre S. J. van der Zant
- Kavli
Institute of Nanoscience, Delft University
of Technology, Lorentzweg 1, Delft, 2628 CJ The Netherlands
| | - Ryan C. Chiechi
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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6
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Werner P, Wächter T, Asyuda A, Wiesner A, Kind M, Bolte M, Weinhardt L, Terfort A, Zharnikov M. Electron Transfer Dynamics and Structural Effects in Benzonitrile Monolayers with Tuned Dipole Moments by Differently Positioned Fluorine Atoms. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39859-39869. [PMID: 32805830 DOI: 10.1021/acsami.0c10513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To understand the influence of the molecular dipole moment on the electron transfer (ET) dynamics across the molecular framework, two series of differently fluorinated, benzonitrile-based self-assembled monolayers (SAMs) bound to Au(111) by either thiolate or selenolate anchoring groups were investigated. Within each series, the molecular structures were the same with the exception of the positions of two fluorine atoms affecting the dipole moment of the SAM-forming molecules. The SAMs exhibited a homogeneous anchoring to the substrate, nearly upright molecular orientations, and the outer interface comprised of the terminal nitrile groups. The ET dynamics was studied by resonant Auger electron spectroscopy in the framework of the core-hole clock method. Resonance excitation of the nitrile group unequivocally ensured an ET pathway from the tail group to the substrate. As only one of the π* orbitals of this group is hybridized with the π* system of the adjacent phenyl ring, two different ET times could be determined depending on the primary excited orbital being either localized at the nitrile group or delocalized over the entire benzonitrile moiety. The latter pathway turned out to be much more efficient, with the characteristic ET times being a factor 2.5-3 shorter than those for the localized orbital. The dynamic ET properties of the analogous thiolate- and selenolate-based adsorbates were found to be nearly identical. Finally and most importantly, these properties were found to be unaffected by the different patterns of the fluorine substitution used in the present study, thus showing no influence of the molecular dipole moment.
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Affiliation(s)
- Philipp Werner
- Institut für Anorganische und Analytische Chemie, Johann Wolfgang Goethe Universität Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Tobias Wächter
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Andika Asyuda
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Adrian Wiesner
- Institut für Anorganische und Analytische Chemie, Johann Wolfgang Goethe Universität Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Martin Kind
- Institut für Anorganische und Analytische Chemie, Johann Wolfgang Goethe Universität Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Johann Wolfgang Goethe Universität Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Lothar Weinhardt
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstr. 18/20, 76128 Karlsruhe, Germany
- Department of Chemistry and Biochemistry, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
| | - Andreas Terfort
- Institut für Anorganische und Analytische Chemie, Johann Wolfgang Goethe Universität Frankfurt, Max-von-Laue-Straße 7, D-60438 Frankfurt am Main, Germany
| | - Michael Zharnikov
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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7
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Niederhausen J, MacQueen RW, Lips K, Aldahhak H, Schmidt WG, Gerstmann U. Tetracene Ultrathin Film Growth on Hydrogen-Passivated Silicon. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9099-9113. [PMID: 32659091 DOI: 10.1021/acs.langmuir.0c01154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Inorganic-organic interfaces are important for enhancing the power conversion efficiency of silicon-based solar cells through singlet exciton fission (SF). We elucidated the structure of the first monolayers of tetracene (Tc), an SF molecule, on hydrogen-passivated Si(111) [H-Si(111)] and hydrogenated amorphous Si (a-Si:H) by combining near-edge X-ray absorption fine structure (NEXAFS) and X-ray photoelectron spectroscopy (XPS) experiments with density functional theory (DFT) calculations. For samples grown at or below substrate temperatures of 265 K, the resulting ultrathin Tc films are dominated by almost upright-standing molecules. The molecular arrangement is very similar to the Tc bulk phase, with only a slightly higher average angle between the conjugated molecular plane normal and the surface normal (α) around 77°. Judging from carbon K-edge X-ray absorption spectra, the orientation of the Tc molecules are almost identical when grown on H-Si(111) and a-Si:H substrates as well as for (sub)mono- to several-monolayer coverages. Annealing to room temperature, however, changes the film structure toward a smaller α of about 63°. A detailed DFT-assisted analysis suggests that this structural transition is correlated with a lower packing density and requires a well-chosen amount of thermal energy. Therefore, we attribute the resulting structure to a distinct monolayer configuration that features less inclined, but still well-ordered molecules. The larger overlap with the substrate wave functions makes this arrangement attractive for an optimized interfacial electron transfer in SF-assisted silicon solar cells.
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Affiliation(s)
- Jens Niederhausen
- Department ASPIN, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH, Berlin, Germany
| | - Rowan W MacQueen
- Department ASPIN, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH, Berlin, Germany
| | - Klaus Lips
- Department ASPIN, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH, Berlin, Germany
| | - Hazem Aldahhak
- Lehrstuhl für Theoretische Materialphysik, Universität Paderborn, 33095 Paderborn, Germany
| | - Wolf Gero Schmidt
- Lehrstuhl für Theoretische Materialphysik, Universität Paderborn, 33095 Paderborn, Germany
| | - Uwe Gerstmann
- Lehrstuhl für Theoretische Materialphysik, Universität Paderborn, 33095 Paderborn, Germany
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8
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Temperton RH, Rosemann NW, Guo M, Johansson N, Fredin LA, Prakash O, Wärnmark K, Handrup K, Uhlig J, Schnadt J, Persson P. Site-Selective Orbital Interactions in an Ultrathin Iron-Carbene Photosensitizer Film. J Phys Chem A 2020; 124:1603-1609. [PMID: 32011141 PMCID: PMC7307919 DOI: 10.1021/acs.jpca.0c00803] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present the first experimental study of the frontier orbitals in an ultrathin film of the novel hexa-carbene photosensitizer [Fe(btz)3]3+, where btz is 3,3'-dimethyl-1,1'-bis(p-tolyl)-4,4'-bis(1,2,3-triazol-5-ylidene). Resonant photoelectron spectroscopy (RPES) was used to probe the electronic structure of films where the molecular and oxidative integrities had been confirmed with optical and X-ray spectroscopies. In combination with density functional theory calculations, RPES measurements provided direct and site-selective information about localization and interactions of occupied and unoccupied molecular orbitals. Fe 2p, N 1s, and C 1s measurements selectively probed the metal, carbene, and side-group contributions revealing strong metal-ligand orbital mixing of the frontier orbitals. This helps explain the remarkable photophysical properties of iron-carbenes in terms of unconventional electronic structure properties and favorable metal-ligand bonding interactions-important for the continued development of these type of complexes toward light-harvesting and light-emitting applications.
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Affiliation(s)
- Robert H Temperton
- School of Physics and Astronomy , University of Nottingham , Nottingham NG7 2RD , U.K
| | - Nils W Rosemann
- Division of Chemical Physics, Chemical Center , Lund University , Box 124, Lund SE-221 00 , Sweden.,Centre for Analysis and Synthesis, Department of Chemistry , Lund University , Box 124, Lund SE-22100 , Sweden
| | - Meiyuan Guo
- Division of Chemical Physics, Chemical Center , Lund University , Box 124, Lund SE-221 00 , Sweden
| | - Niclas Johansson
- Division of Synchrotron Radiation Research, Department of Physics, MAX IV Laboratory , Lund University , Box 118, Lund SE-22100 , Sweden
| | - Lisa A Fredin
- Theoretical Chemistry Division, Chemical Center , Lund University , Box 124, Lund SE-221 00 , Sweden
| | - Om Prakash
- Centre for Analysis and Synthesis, Department of Chemistry , Lund University , Box 124, Lund SE-22100 , Sweden
| | - Kenneth Wärnmark
- Centre for Analysis and Synthesis, Department of Chemistry , Lund University , Box 124, Lund SE-22100 , Sweden
| | - Karsten Handrup
- Division of Synchrotron Radiation Research, Department of Physics, MAX IV Laboratory , Lund University , Box 118, Lund SE-22100 , Sweden
| | - Jens Uhlig
- Division of Chemical Physics, Chemical Center , Lund University , Box 124, Lund SE-221 00 , Sweden
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, MAX IV Laboratory , Lund University , Box 118, Lund SE-22100 , Sweden
| | - Petter Persson
- Theoretical Chemistry Division, Chemical Center , Lund University , Box 124, Lund SE-221 00 , Sweden
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9
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Fu Z, Ladnorg T, Gliemann H, Welle A, Bashir A, Rohwerder M, Zhang Q, Schüpbach B, Terfort A, Wöll C. Mobility of charge carriers in self-assembled monolayers. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:2449-2458. [PMID: 31921523 PMCID: PMC6941449 DOI: 10.3762/bjnano.10.235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
We present a new approach to study charge transport within 2D layers of organic semi-conductors (OSCs) using atomic force microscopy (AFM)-based lithography applied to self-assembled monolayers (SAMs), fabricated from appropriate organothiols. The extent of lateral charge transport was investigated by insulating pre-defined patches within OSC-based SAMs with regions of insulating SAM made from large band gap alkanethiolates. The new method is demonstrated using a phenyl-linked anthracenethiolate (PAT), 4-(anthracene-2-ylethynyl)benzyl thiolate. I-V characteristics of differently shaped PAT-islands were measured using the AFM tip as a top electrode. We were able to determine a relationship between island size and electrical conductivity, and from this dependence, we could obtain information on the lateral charge transport and charge carrier mobility within the thin OSC layers. Our study demonstrates that AFM nanografting of appropriately functionalized OSC molecules provides a suitable method to determine intrinsic mobilities of charge carriers in OSC thin films. In particular, this method is rather insensitive with regard to influence of grain boundaries and other defects, which hamper the application of conventional methods for the determination of mobilities in macroscopic samples.
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Affiliation(s)
- Zhihua Fu
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
| | - Tatjana Ladnorg
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hartmut Gliemann
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
| | - Alexander Welle
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
| | - Asif Bashir
- Max-Planck-Institut für Eisenforschung GmbH, 40237 Düsseldorf, Germany
- Thyssenkrupp Bilstein GmbH, Herner Str. 299, 44809 Bochum, Germany
| | - Michael Rohwerder
- Max-Planck-Institut für Eisenforschung GmbH, 40237 Düsseldorf, Germany
| | - Qiang Zhang
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
| | - Björn Schüpbach
- Department of Chemistry, Institute of Inorganic and Analytical Chemistry, Goethe-University, 60438 Frankfurt, Germany
| | - Andreas Terfort
- Department of Chemistry, Institute of Inorganic and Analytical Chemistry, Goethe-University, 60438 Frankfurt, Germany
| | - Christof Wöll
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Campus Nord, 76344 Eggenstein-Leopoldshafen, Germany
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10
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Gattinoni C, Tsaousis P, Euaruksakul C, Price R, Duncan DA, Pascal T, Prendergast D, Held G, Michaelides A. Adsorption Behavior of Organic Molecules: A Study of Benzotriazole on Cu(111) with Spectroscopic and Theoretical Methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:882-893. [PMID: 30607957 DOI: 10.1021/acs.langmuir.8b03528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The adsorption of organic molecules on solid substrates is important to applications in fields such as catalysis, photovoltaics, corrosion inhibition, adhesion, and sensors. The molecular level description of the surface-molecule interaction and of the adsorption structures in these complex systems is crucial to understand their properties and function. Here, we present an investigation of one such system, benzotriazole (BTAH) on single-crystal Cu(111) in vacuum conditions. BTAH is the most widely used corrosion inhibitor for copper and thus a molecule of great industrial relevance. We show that the co-application of a wide range of spectroscopic techniques with theoretical methods provides unique insight in the description of the atomistic details of the adsorbed structures. Specifically, spectroscopic photoemission, absorption, and standing wave experiments combined with ab initio computational modeling allowed us to identify that benzotriazole forms overlayers of intact BTAH when deposited at low temperature, and it dissociates into BTA and H at room temperature and above. The dissociated molecule then forms complex structures of mixed chains and dimers of BTA bound to copper adatoms. Our work also reveals that copper adatoms at low concentrations, such as the theoretically predicted superstructures, cannot be resolved by means of current X-ray photoelectron spectroscopy as the modeled Cu 2p spectra are practically indistinguishable from those for a Cu surface without adatoms. Overall this study significantly deepens understanding of BTAH on Cu, a system studied for more than 50 years, and it highlights the benefits of combining spectroscopic and computational methods to obtain a complete picture of a complex adsorption system.
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Affiliation(s)
- Chiara Gattinoni
- Thomas Young Centre, London Centre for Nanotechnology and Department of Physics and Astronomy , University College London , Gower Street , London WC1E 6BT , U.K
| | | | - Chanan Euaruksakul
- Department of Chemistry , University of Reading , Reading RG6 6AD , U.K
- Diamond Light Source, Harwell Science and Innovation Campus , Didcot OX11 0QX , U.K
| | - Rachel Price
- Department of Chemistry , University of Reading , Reading RG6 6AD , U.K
| | - David A Duncan
- Diamond Light Source, Harwell Science and Innovation Campus , Didcot OX11 0QX , U.K
| | - Tod Pascal
- Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - David Prendergast
- Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Georg Held
- Department of Chemistry , University of Reading , Reading RG6 6AD , U.K
- Diamond Light Source, Harwell Science and Innovation Campus , Didcot OX11 0QX , U.K
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology and Department of Physics and Astronomy , University College London , Gower Street , London WC1E 6BT , U.K
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11
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12
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Nikonov K, Ehlen N, Senkovskiy B, Saigal N, Fedorov A, Nefedov A, Wöll C, Di Santo G, Petaccia L, Grüneis A. Synthesis and spectroscopic characterization of alkali–metal intercalated ZrSe2. Dalton Trans 2018; 47:2986-2991. [DOI: 10.1039/c7dt03756b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the synthesis and spectroscopic characterization of alkali metal intercalated ZrSe2 single crystals.
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Affiliation(s)
| | - Niels Ehlen
- II. Physikalisches Institut
- Universität zu Köln
- 50937 Köln
- Germany
| | | | - Nihit Saigal
- II. Physikalisches Institut
- Universität zu Köln
- 50937 Köln
- Germany
| | | | - Alexei Nefedov
- Institut für Funktionelle Grenzflächen
- Karlsruher Institut für Technologie
- Eggenstein-Leopoldshafen
- Germany
| | - Christof Wöll
- Institut für Funktionelle Grenzflächen
- Karlsruher Institut für Technologie
- Eggenstein-Leopoldshafen
- Germany
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13
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Yang C, Bebensee F, Chen J, Yu X, Nefedov A, Wöll C. Carbon Dioxide Adsorption on CeO2
(110): An XPS and NEXAFS Study. Chemphyschem 2017; 18:1874-1880. [DOI: 10.1002/cphc.201700240] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/08/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Chengwu Yang
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Fabian Bebensee
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Jun Chen
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- China Academy of Engineering Physics; Mianshan Road 64 621900 Mianyang China
| | - Xiaojuan Yu
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Alexei Nefedov
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Christof Wöll
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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14
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Bashir A, Sauter E, Al-Refaie N, Rohwerder M, Zharnikov M, Azzam W. Side-Group-Induced Polymorphism in Self-Assembled Monolayers: 3,5-Bis(trifluoromethyl)benzenethiolate Films on Au(111). Chemphyschem 2017; 18:702-714. [DOI: 10.1002/cphc.201700030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Asif Bashir
- Thyssenkrupp Bilstein GmbH; Niederkell 25 54429 Mandern Germany
- Max-Planck-Institut für Eisenforschung GmbH; Max-Planck-Str. 1 40237 Düsseldorf Germany
| | - Eric Sauter
- Applied Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Najd Al-Refaie
- Department of Chemistry; University College in Al-Qunfudah, Umm Al-Qura University; 1109 Makkah Al-Mukarramah Saudi Arabia
| | - Michael Rohwerder
- Max-Planck-Institut für Eisenforschung GmbH; Max-Planck-Str. 1 40237 Düsseldorf Germany
| | - Michael Zharnikov
- Applied Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
| | - Waleed Azzam
- Department of Chemistry; University College in Al-Qunfudah, Umm Al-Qura University; 1109 Makkah Al-Mukarramah Saudi Arabia
- Department of Chemistry; Tafila Technical University; P.O. Box 179 Tafila 66110 Jordan
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15
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Bare SR, Vila FD, Charochak ME, Prabhakar S, Bradley WJ, Jaye C, Fischer DA, Hayashi ST, Bradley SA, Rehr JJ. Characterization of Coke on a Pt-Re/γ-Al2O3 Re-Forming Catalyst: Experimental and Theoretical Study. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02785] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon R. Bare
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - F. D. Vila
- Department
of Physics, University of Washington, Seattle, Washington 98195, United States
| | | | - Sesh Prabhakar
- Honeywell UOP, Des Plaines, Illinois 60017, United States
| | - William J. Bradley
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Cherno Jaye
- Materials
Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Daniel A. Fischer
- Materials
Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - S. T. Hayashi
- Department
of Physics, University of Washington, Seattle, Washington 98195, United States
| | | | - J. J. Rehr
- Department
of Physics, University of Washington, Seattle, Washington 98195, United States
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16
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Melke J, Peter B, Habereder A, Ziegler J, Fasel C, Nefedov A, Sezen H, Wöll C, Ehrenberg H, Roth C. Metal-Support Interactions of Platinum Nanoparticles Decorated N-Doped Carbon Nanofibers for the Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:82-90. [PMID: 26673813 DOI: 10.1021/acsami.5b06225] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
N-doped carbon materials are discussed as catalyst supports for the electrochemical oxygen reduction reaction (ORR) in fuel cells. This work deals with the preparation of Pt nanoparticles (NPs) supported on N-doped carbon nanofibers (N-CNF) from a polyaniline nanofiber (PANI NF) precursor, and investigates the ORR activity of the produced materials. Initially, Pt NPs are deposited on PANI NFs. The PANI NF precursors are characterized by near-edge X-ray absorption fine structure (NEXAFS) and transmission electron microscopy (TEM) measurements. It is shown, that in the PANI NF precursor materials electrons from the Pt are being transferred toward the π-conjugated systems of the aromatic ring. This strong interaction of Pt atoms with PANI explains the high dispersion of Pt NPs on the PANI NF. Subsequently, the PANI NF precursors are carbonized at different heat-treatment conditions resulting in structurally different N-CNFs which are characterized by NEXAFS, X-ray photoelectron spectroscopy (XPS) ,and TEM measurements. It is shown that an interaction between N-groups and Pt NPs exists in all investigated N-CNFs. However, the N-CNFs differ in the composition of the N-species and the dispersion of the Pt NPs. A small mean Pt NP size with a narrow size distribution is attributed to the presence of pyrdinic N-groups in the N-CNFs, whereas, for the N-CNFs with mainly graphitic and pyrrolic N-groups, an increase in the average Pt NP size with a broad size distribution is found. The ORR activity in alkaline media investigated by Koutecky-Levich analysis of rotating disk electrode measurements showed a largely enhanced ORR activity in comparison to a conventional Pt/C catalyst.
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Affiliation(s)
- Julia Melke
- Institut für Angewandte Materialien-Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Physikalische und Theoretische Chemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Benedikt Peter
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Anja Habereder
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Juergen Ziegler
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Claudia Fasel
- Institut für Material- und Geowissenschaften, Technische Universität Darmstadt , Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany
| | - Alexei Nefedov
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hikmet Sezen
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14, 34012 Basovizza, Trieste, Italy
| | - Christof Wöll
- Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Helmut Ehrenberg
- Institut für Angewandte Materialien-Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christina Roth
- Physikalische und Theoretische Chemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
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17
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Verbitskiy NI, Fedorov AV, Profeta G, Stroppa A, Petaccia L, Senkovskiy B, Nefedov A, Wöll C, Usachov DY, Vyalikh DV, Yashina LV, Eliseev AA, Pichler T, Grüneis A. Atomically precise semiconductor--graphene and hBN interfaces by Ge intercalation. Sci Rep 2015; 5:17700. [PMID: 26639608 PMCID: PMC4671056 DOI: 10.1038/srep17700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 11/04/2015] [Indexed: 12/04/2022] Open
Abstract
The full exploration of the potential, which graphene offers to nanoelectronics requires its integration into semiconductor technology. So far the real-world applications are limited by the ability to concomitantly achieve large single-crystalline domains on dielectrics and semiconductors and to tailor the interfaces between them. Here we show a new direct bottom-up method for the fabrication of high-quality atomically precise interfaces between 2D materials, like graphene and hexagonal boron nitride (hBN), and classical semiconductor via Ge intercalation. Using angle-resolved photoemission spectroscopy and complementary DFT modelling we observed for the first time that epitaxially grown graphene with the Ge monolayer underneath demonstrates Dirac Fermions unaffected by the substrate as well as an unperturbed electronic band structure of hBN. This approach provides the intrinsic relativistic 2D electron gas towards integration in semiconductor technology. Hence, these new interfaces are a promising path for the integration of graphene and hBN into state-of-the-art semiconductor technology.
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Affiliation(s)
- N I Verbitskiy
- Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straβe 77, D-50937 Cologne, Germany
- Department of Materials Science, Moscow State University, Leninskiye Gory 1/3, 119992, Moscow, Russia
| | - A V Fedorov
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straβe 77, D-50937 Cologne, Germany
- IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg, 199034, Russia
| | - G Profeta
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio 10, I-67100 L'Aquila, Italy
- CNR-SPIN, Via Vetoio 10, I-67100 L'Aquila, Italy
| | - A Stroppa
- CNR-SPIN, Via Vetoio 10, I-67100 L'Aquila, Italy
| | - L Petaccia
- Elettra Sincrotrone Trieste, Strada Statale 14 km 163.5, I-34149 Trieste, Italy
| | - B Senkovskiy
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straβe 77, D-50937 Cologne, Germany
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg, 199034, Russia
- Institute of Solid State Physics, Dresden University of Technology, Helmholtzstraße 10, D-01062 Dresden, Germany
| | - A Nefedov
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - C Wöll
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - D Yu Usachov
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg, 199034, Russia
| | - D V Vyalikh
- St. Petersburg State University, 7/9 Universitetskaya nab, St. Petersburg, 199034, Russia
- Institute of Solid State Physics, Dresden University of Technology, Helmholtzstraße 10, D-01062 Dresden, Germany
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
- Donostia International Physics Center (DIPC), Departamento de Fisica de Materiales and CFM-MPC UPV/EHU, 20080 San Sebastian, Spain
| | - L V Yashina
- JSC "Giredmet" SRC RF, Tolmachevky St. 5-1 B, 119017 Moscow, Russia
- Department of Chemistry, Moscow State University, Leninskiye Gory 1/3, 119992, Moscow, Russia
| | - A A Eliseev
- Department of Materials Science, Moscow State University, Leninskiye Gory 1/3, 119992, Moscow, Russia
| | - T Pichler
- Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
| | - A Grüneis
- II. Physikalisches Institut, Universität zu Köln, Zülpicher Straβe 77, D-50937 Cologne, Germany
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18
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Meyerbroeker N, Waske P, Zharnikov M. Amino-terminated biphenylthiol self-assembled monolayers as highly reactive molecular templates. J Chem Phys 2015; 142:101919. [DOI: 10.1063/1.4907942] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- N. Meyerbroeker
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - P. Waske
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - M. Zharnikov
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
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