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Chesnyak V, Cuxart MG, Baranowski D, Seufert K, Cojocariu I, Jugovac M, Feyer V, Auwärter W. Stripe-Like hBN Monolayer Template for Self-Assembly and Alignment of Pentacene Molecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304803. [PMID: 37821403 DOI: 10.1002/smll.202304803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/28/2023] [Indexed: 10/13/2023]
Abstract
Metallic surfaces with unidirectional anisotropy are often used to guide the self-assembly of organic molecules along a particular direction. Such supports thus offer an avenue for the fabrication of hybrid organic-metal interfaces with tailored morphology and precise elemental composition. Nonetheless, such control often comes at the expense of detrimental interfacial interactions that might quench the pristine properties of molecules. Here, hexagonal boron nitride grown on Ir(100) is introduced as a robust platform with several coexisting 1D stripe-like moiré superstructures that effectively guide unidirectional self-assemblies of pentacene molecules, concomitantly preserving their pristine electronic properties. In particular, highly-aligned longitudinal arrays of equally-oriented molecules are formed along two perpendicular directions, as demonstrated by comprehensive scanning tunneling microscopy and photoemission characterization performed at the local and non-local scale, respectively. The functionality of the template is demonstrated by photoemission tomography, a surface-averaging technique requiring a high degree of orientational order of the probed molecules. The successful identification of pentacene's pristine frontier orbitals underlines that the template induces excellent long-range molecular ordering via weak interactions, preventing charge transfer.
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Affiliation(s)
- Valeria Chesnyak
- Physics Department, TUM School of Natural Sciences, Technical University of Munich, 85747, Garching, Germany
- Dipartimento di Fisica, Università degli Studi di Trieste, via A. Valerio 2, Trieste, 34127, Italy
- Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, S.S. 14 km 163.5 in AREA Science Park, Basovizza, Trieste, 34149, Italy
| | - Marc G Cuxart
- Physics Department, TUM School of Natural Sciences, Technical University of Munich, 85747, Garching, Germany
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), 28049, Madrid, Spain
| | - Daniel Baranowski
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich GmbH, 52428, Jülich, Germany
| | - Knud Seufert
- Physics Department, TUM School of Natural Sciences, Technical University of Munich, 85747, Garching, Germany
| | - Iulia Cojocariu
- Dipartimento di Fisica, Università degli Studi di Trieste, via A. Valerio 2, Trieste, 34127, Italy
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich GmbH, 52428, Jülich, Germany
- Elettra-Sincrotrone, S.C.p.A. S.S 14 - km 163.5, Trieste, 34149, Italy
| | - Matteo Jugovac
- Elettra-Sincrotrone, S.C.p.A. S.S 14 - km 163.5, Trieste, 34149, Italy
| | - Vitaliy Feyer
- Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich GmbH, 52428, Jülich, Germany
- Fakultät für Physik and Center for Nanointegration Duisburg-Essen (CENIDE), Universität Duisburg-Essen, 47048, Duisburg, Germany
| | - Willi Auwärter
- Physics Department, TUM School of Natural Sciences, Technical University of Munich, 85747, Garching, Germany
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Naclerio AE, Kidambi PR. A Review of Scalable Hexagonal Boron Nitride (h-BN) Synthesis for Present and Future Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207374. [PMID: 36329667 DOI: 10.1002/adma.202207374] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Hexagonal boron nitride (h-BN) is a layered inorganic synthetic crystal exhibiting high temperature stability and high thermal conductivity. As a ceramic material it has been widely used for thermal management, heat shielding, lubrication, and as a filler material for structural composites. Recent scientific advances in isolating atomically thin monolayers from layered van der Waals crystals to study their unique properties has propelled research interest in mono/few layered h-BN as a wide bandgap insulating support for nanoscale electronics, tunnel barriers, communications, neutron detectors, optics, sensing, novel separations, quantum emission from defects, among others. Realizing these futuristic applications hinges on scalable cost-effective high-quality h-BN synthesis. Here, the authors review scalable approaches of high-quality mono/multilayer h-BN synthesis, discuss the challenges and opportunities for each method, and contextualize their relevance to emerging applications. Maintaining a stoichiometric balance B:N = 1 as the atoms incorporate into the growing layered crystal and maintaining stacking order between layers during multi-layer synthesis emerge as some of the main challenges for h-BN synthesis and the development of processes to address these aspects can inform and guide the synthesis of other layered materials with more than one constituent element. Finally, the authors contextualize h-BN synthesis efforts along with quality requirements for emerging applications via a technological roadmap.
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Affiliation(s)
- Andrew E Naclerio
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, 37212, USA
| | - Piran R Kidambi
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, 37212, USA
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, 37212, USA
- Vanderbilt Institute of Nanoscale Sciences and Engineering, Vanderbilt University, Nashville, TN, 37212, USA
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3
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Hemmi A, Seitsonen AP, Greber T, Cun H. The Winner Takes It All: Carbon Supersedes Hexagonal Boron Nitride with Graphene on Transition Metals at High Temperatures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2205184. [PMID: 36319466 DOI: 10.1002/smll.202205184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/26/2022] [Indexed: 06/16/2023]
Abstract
The production of high-quality hexagonal boron nitride (h-BN) is essential for the ultimate performance of 2D materials-based devices, since it is the key 2D encapsulation material. Here, a decisive guideline is reported for fabricating high-quality h-BN on transition metals. It is crucial to exclude carbon from the h-BN related process, otherwise carbon prevails over boron and nitrogen due to its larger binding energy, thereupon forming graphene on metals after high-temperature annealing. The surface reaction-assisted conversion from h-BN to graphene with high-temperature treatments is demonstrated. The pyrolysis temperature Tp is an important quality indicator for h-BN/metals. When the temperature is lower than Tp , the quality of the h-BN layer is improved upon annealing. While the annealing temperature is above Tp , in case of carbon-free conditions, the h-BN disintegrates and nitrogen desorbs from the surface more easily than boron, eventually leading to clean metal surfaces. However, once the h-BN layer is exposed to carbon, graphene forms on Pt(111) in the high-temperature regime. This not only provides an indispensable principle (avoid carbon) for fabricating high-quality h-BN materials on transition metals, but also offers a straightforward method for the surface reaction-assisted conversion from h-BN to graphene on Pt(111).
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Affiliation(s)
- Adrian Hemmi
- Physik-Institut, Universität Zürich, Zürich, 8057, Switzerland
| | | | - Thomas Greber
- Physik-Institut, Universität Zürich, Zürich, 8057, Switzerland
| | - Huanyao Cun
- Physik-Institut, Universität Zürich, Zürich, 8057, Switzerland
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4
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Cuxart MG, Seufert K, Chesnyak V, Waqas WA, Robert A, Bocquet ML, Duesberg GS, Sachdev H, Auwärter W. Borophenes made easy. SCIENCE ADVANCES 2021; 7:eabk1490. [PMID: 34731005 PMCID: PMC8565903 DOI: 10.1126/sciadv.abk1490] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
To date, the scalable synthesis of elemental two-dimensional materials beyond graphene still remains elusive. Here, we introduce a versatile chemical vapor deposition (CVD) method to grow borophenes, as well as borophene heterostructures, by selectively using diborane originating from traceable byproducts of borazine. Specifically, metallic borophene polymorphs were successfully synthesized on Ir(111) and Cu(111) single-crystal substrates and conjointly with insulating hexagonal boron nitride (hBN) to form atomically precise lateral borophene-hBN interfaces or vertical van der Waals heterostructures. Thereby, borophene is protected from immediate oxidation by a single hBN overlayer. The ability to synthesize high-quality borophenes with large single-crystalline domains in the micrometer scale by a straight-forward CVD approach opens up opportunities for the study of their fundamental properties and for device incorporation.
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Affiliation(s)
- Marc G. Cuxart
- Physics Department E20, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Knud Seufert
- Physics Department E20, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Valeria Chesnyak
- Physics Department E20, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Wajahat A. Waqas
- Physics Department E20, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Anton Robert
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Marie-Laure Bocquet
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Georg S. Duesberg
- Fakultät für Elektrotechnik und Informationstechnik, Institut für Physik EIT-2, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, D-85579 Neubiberg, Germany
| | - Hermann Sachdev
- Fakultät für Elektrotechnik und Informationstechnik, Institut für Physik EIT-2, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, D-85579 Neubiberg, Germany
| | - Willi Auwärter
- Physics Department E20, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
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Ali K, Fernández L, Kherelden MA, Makarova AA, Píš I, Bondino F, Lawrence J, de Oteyza DG, Usachov DY, Vyalikh DV, García de Abajo FJ, El‐Fattah ZMA, Ortega JE, Schiller F. Atomically-Precise Texturing of Hexagonal Boron Nitride Nanostripes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101455. [PMID: 34293238 PMCID: PMC8425884 DOI: 10.1002/advs.202101455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/25/2021] [Indexed: 06/13/2023]
Abstract
Monolayer hexagonal boron nitride (hBN) is attracting considerable attention because of its potential applications in areas such as nano- and opto-electronics, quantum optics and nanomagnetism. However, the implementation of such functional hBN demands precise lateral nanostructuration and integration with other two-dimensional materials, and hence, novel routes of synthesis beyond exfoliation. Here, a disruptive approach is demonstrated, namely, imprinting the lateral pattern of an atomically stepped one-dimensional template into a hBN monolayer. Specifically, hBN is epitaxially grown on vicinal Rhodium (Rh) surfaces using a Rh curved crystal for a systematic exploration, which produces a periodically textured, nanostriped hBN carpet that coats Rh(111)-oriented terraces and lattice-matched Rh(337) facets with tunable width. The electronic structure reveals a nanoscale periodic modulation of the hBN atomic potential that leads to an effective lateral semiconductor multi-stripe. The potential of such atomically thin hBN heterostructure for future applications is discussed.
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Affiliation(s)
- Khadiza Ali
- Centro de Física de Materiales CSIC/UPV‐EHU‐Materials Physics CenterSan SebastiánE‐20018Spain
| | - Laura Fernández
- Centro de Física de Materiales CSIC/UPV‐EHU‐Materials Physics CenterSan SebastiánE‐20018Spain
- Universidad del País VascoDpto. Física AplicadaSan SebastiánE‐20018Spain
| | | | | | - Igor Píš
- IOM‐CNRLaboratorio TASCTriesteI‐34149Italy
- Elettra ‐ Sincrotrone Trieste S.C.p.A.TriesteI‐34149Italy
| | | | - James Lawrence
- Donostia International Physics CenterSan SebastiánE‐20018Spain
| | | | | | - Denis V. Vyalikh
- Donostia International Physics CenterSan SebastiánE‐20018Spain
- IkerbasqueBasque Foundation for ScienceBasque CountryBilbao48013Spain
| | - F. Javier García de Abajo
- ICFO‐Institut de Ciencies FotoniquesThe Barcelona Institute of Science and TechnologyBarcelona08860Spain
- ICREA‐Institució Catalana de Recerca i Estudis AvançatsPasseig Lluís Companys 23Barcelona08010Spain
| | | | - J. Enrique Ortega
- Centro de Física de Materiales CSIC/UPV‐EHU‐Materials Physics CenterSan SebastiánE‐20018Spain
- Universidad del País VascoDpto. Física AplicadaSan SebastiánE‐20018Spain
- Donostia International Physics CenterSan SebastiánE‐20018Spain
| | - Frederik Schiller
- Centro de Física de Materiales CSIC/UPV‐EHU‐Materials Physics CenterSan SebastiánE‐20018Spain
- Donostia International Physics CenterSan SebastiánE‐20018Spain
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6
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Liu ZQ, Dong J, Ding F. The geometry of hexagonal boron nitride clusters in the initial stages of chemical vapor deposition growth on a Cu(111) surface. NANOSCALE 2019; 11:13366-13376. [PMID: 31273364 DOI: 10.1039/c9nr02404b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To understand the nucleation process in the growth of hexagonal boron nitride (h-BN) on transition metal substrates by chemical vapor deposition (CVD), the energy of formation and stability of h-BN clusters of different geometries on a pristine Cu(111) surface were systematically investigated using density functional theory calculations. We find that unlike carbon clusters, h-BN clusters on Cu supports can undergo two possible transformations of the minimum-energy structure at a critical size of 13. Different from freestanding h-BN clusters, on a Cu(111) surface, h-BN chains are more stable than h-BN rings and thus dominate the minimum-energy structure for cluster sizes lower than the critical size. Thus, depending on the experimental conditions of CVD, one-dimensional Bn-1Nn (N-rich environment) or BnNn-1 (B-rich) chains are first created, and they transform to two-dimensional sp2 networks or h-BN islands, but for a BnNn chain, the transformation to a two-dimensional sp2 network h-BN island does not occur. In contrast to carbon islands where pentagons are readily formed, odd-membered rings are extremely rare in h-BN islands, where the transformation to the most stable structure occurs through a combination of trapeziums and hexagons at the edges, so as to avoid B-B and N-N bonds. Moreover, on a Cu(111) surface, trapeziums are destabilized when the four edges are connected to other hexagons because of additional curvature energy, thus favoring the nucleation of planar nuclei. A deep insight into h-BN cluster formation on a Cu support is vital to understanding the growth mechanism of h-BN on a transition metal surface in CVD experiments to further improve experimental designs in the CVD growth of h-BN.
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Affiliation(s)
- Zhong-Qiang Liu
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea and College of Physics and Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Jichen Dong
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Feng Ding
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea and Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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7
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Achilli S, Cavaliere E, Nguyen TH, Cattelan M, Agnoli S. Growth and electronic structure of 2D hexagonal nanosheets on a corrugated rectangular substrate. NANOTECHNOLOGY 2018; 29:485201. [PMID: 30192742 DOI: 10.1088/1361-6528/aadfd2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Graphene and h-BN are grown by chemical vapor deposition in ultra high vacuum conditions on the Pt(110) surface. Scanning tunneling microscopy measurements and low-energy electron diffraction data indicate that graphene forms a variety of differently oriented incommensurate domains although with a strong preference to align its [Formula: see text] direction with the [Formula: see text] direction of Pt. Meanwhile, h-BN exhibits a c(8 × 10) commensurate superstructure, which presents a high level of defectivity that implies local variation of the periodicity (i.e. mixed c(8 × 10) and c(8 × 12) patches) and the introduction of local defects. The combination of advanced photoemission spectroscopy data (angle-resolved photoemission spectroscopy from the valence band) and ab initio calculations indicates that both 2D materials interact weakly with the substrate: graphene exhibits neutral doping and is morphologically flat, even if it nucleates on the relatively highly corrugated rectangular (110) surface. In the case of h-BN, the interaction is slightly stronger and is characterized by a small electron transfer from surface Pt atoms to nitrogen atoms. The (110) termination of Pt is therefore a quite interesting surface for the growth of 2D materials because given its low symmetry, it may favor the growth of selectively oriented domains but does not affect their pristine electronic properties.
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Affiliation(s)
- Simona Achilli
- Department of Physics, European Theoretical Spectroscopy Facility (ETSF), University of Milano, Via Celoria 16, 20133 Milano, Italy
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8
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Yu C, Zhang J, Tian W, Fan X, Yao Y. Polymer composites based on hexagonal boron nitride and their application in thermally conductive composites. RSC Adv 2018; 8:21948-21967. [PMID: 35541702 PMCID: PMC9081352 DOI: 10.1039/c8ra02685h] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/10/2018] [Indexed: 01/06/2023] Open
Abstract
Hexagonal boron nitride (h-BN) is also referred to as "white graphite". Owing to its two-dimensional planar structure, its thermal conductivity along and perpendicular to a basal plane is anisotropic. However, h-BN exhibits properties that are distinct from those of graphite, such as electric insulation, superior antioxidative ability, and purely white appearance. These qualities render h-BN superior as a filler in composites that require thermal conductivity while exhibiting electric insulation. Since the thermal performance of composites is mainly affected by thermal pathways, this article begins with an overall introduction of the preparation of boron nitride nanosheets, followed by a review of the fabrication of h-BN-filled composites. Lastly, the construction of thermally conductive networks is discussed.
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Affiliation(s)
- Cuiping Yu
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University Xi'an 710072 PR China
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Joint Key Laboratory of Functional Nanomaterials and Devices, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences Suzhou 215123 PR China
| | - Jun Zhang
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Joint Key Laboratory of Functional Nanomaterials and Devices, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences Suzhou 215123 PR China
| | - Wei Tian
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University Xi'an 710072 PR China
| | - Xiaodong Fan
- The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science, Northwestern Polytechnical University Xi'an 710072 PR China
| | - Yagang Yao
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Joint Key Laboratory of Functional Nanomaterials and Devices, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences Suzhou 215123 PR China
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9
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McLean B, Eveleens CA, Mitchell I, Webber GB, Page AJ. Catalytic CVD synthesis of boron nitride and carbon nanomaterials - synergies between experiment and theory. Phys Chem Chem Phys 2018; 19:26466-26494. [PMID: 28849841 DOI: 10.1039/c7cp03835f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low-dimensional carbon and boron nitride nanomaterials - hexagonal boron nitride, graphene, boron nitride nanotubes and carbon nanotubes - remain at the forefront of advanced materials research. Catalytic chemical vapour deposition has become an invaluable technique for reliably and cost-effectively synthesising these materials. In this review, we will emphasise how a synergy between experimental and theoretical methods has enhanced the understanding and optimisation of this synthetic technique. This review examines recent advances in the application of CVD to synthesising boron nitride and carbon nanomaterials and highlights where, in many cases, molecular simulations and quantum chemistry have provided key insights complementary to experimental investigation. This synergy is particularly prominent in the field of carbon nanotube and graphene CVD synthesis, and we propose here it will be the key to future advances in optimisation of CVD synthesis of boron nitride nanomaterials, boron nitride - carbon composite materials, and other nanomaterials generally.
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Affiliation(s)
- Ben McLean
- School of Environmental & Life Sciences, The University of Newcastle, Callaghan NSW 2308, Australia.
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10
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Wang Z, Tang Z, Xue Q, Huang Y, Huang Y, Zhu M, Pei Z, Li H, Jiang H, Fu C, Zhi C. Fabrication of Boron Nitride Nanosheets by Exfoliation. CHEM REC 2016; 16:1204-15. [PMID: 27062213 DOI: 10.1002/tcr.201500302] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Indexed: 11/06/2022]
Abstract
Nanomaterials with layered structures, with their intriguing properties, are of great research interest nowadays. As one of the primary two-dimensional nanomaterials, the hexagonal boron nitride nanosheet (BNNS, also called white graphene), which is an analogue of graphene, possesses various attractive properties, such as high intrinsic thermal conductivity, excellent chemical and thermal stability, and electrical insulation properties. After being discovered, it has been one of the most intensively studied two-dimensional non-carbon nanomaterials and has been applied in a wide range of applications. To support the exploration of applications of BNNSs, exfoliation, as one of the most promising approaches to realize large-scale production of BNNSs, has been intensively investigated. In this review, methods to yield BNNSs by exfoliation will be summarized and compared with other potential fabrication methods of BNNSs. In addition, the future prospects of the exfoliation of h-BN will also be discussed.
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Affiliation(s)
- Zifeng Wang
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Zijie Tang
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Qi Xue
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Yan Huang
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Yang Huang
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Minshen Zhu
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Zengxia Pei
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Hongfei Li
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Hongbo Jiang
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Chenxi Fu
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China
| | - Chunyi Zhi
- Department of Physics and Materials Science, City University of Hong Kong, Shenzhen, P. R. China.,Shenzhen Research Institute City University of Hong Kong, Shenzhen, P. R. China
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11
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Bernard S, Salameh C, Miele P. Boron nitride ceramics from molecular precursors: synthesis, properties and applications. Dalton Trans 2016; 45:861-73. [DOI: 10.1039/c5dt03633j] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hexagonal boron nitride (h-BN) attracts considerable interest particularly when it is prepared from borazine-based single-source precursors through chemical routes suitable for the shaping and the nanostructuration of the final ceramic.
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Affiliation(s)
- Samuel Bernard
- Institut Européen des membranes
- IEM
- UMR-5635
- Université de Montpellier
- 34095 Montpellier cedex 5
| | - Chrystelle Salameh
- Institut Européen des membranes
- IEM
- UMR-5635
- Université de Montpellier
- 34095 Montpellier cedex 5
| | - Philippe Miele
- Institut Européen des membranes
- IEM
- UMR-5635
- Université de Montpellier
- 34095 Montpellier cedex 5
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12
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Caneva S, Weatherup R, Bayer BC, Brennan B, Spencer S, Mingard K, Cabrero-Vilatela A, Baehtz C, Pollard AJ, Hofmann S. Nucleation control for large, single crystalline domains of monolayer hexagonal boron nitride via Si-doped Fe catalysts. NANO LETTERS 2015; 15:1867-75. [PMID: 25664483 PMCID: PMC4358078 DOI: 10.1021/nl5046632] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 01/30/2015] [Indexed: 05/23/2023]
Abstract
The scalable chemical vapor deposition of monolayer hexagonal boron nitride (h-BN) single crystals, with lateral dimensions of ∼0.3 mm, and of continuous h-BN monolayer films with large domain sizes (>25 μm) is demonstrated via an admixture of Si to Fe catalyst films. A simple thin-film Fe/SiO2/Si catalyst system is used to show that controlled Si diffusion into the Fe catalyst allows exclusive nucleation of monolayer h-BN with very low nucleation densities upon exposure to undiluted borazine. Our systematic in situ and ex situ characterization of this catalyst system establishes a basis for further rational catalyst design for compound 2D materials.
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Affiliation(s)
- Sabina Caneva
- Department
of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, United Kingdom
| | - Robert
S. Weatherup
- Department
of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, United Kingdom
| | - Bernhard C. Bayer
- Department
of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, United Kingdom
- Faculty
of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Barry Brennan
- National Physical
Laboratory, Hampton Rd, TW11 0LW, Teddington, Middlesex, United Kingdom
| | - Steve
J. Spencer
- National Physical
Laboratory, Hampton Rd, TW11 0LW, Teddington, Middlesex, United Kingdom
| | - Ken Mingard
- National Physical
Laboratory, Hampton Rd, TW11 0LW, Teddington, Middlesex, United Kingdom
| | - Andrea Cabrero-Vilatela
- Department
of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, United Kingdom
| | - Carsten Baehtz
- Institute of Ion
Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - Andrew J. Pollard
- National Physical
Laboratory, Hampton Rd, TW11 0LW, Teddington, Middlesex, United Kingdom
| | - Stephan Hofmann
- Department
of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, United Kingdom
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Vinogradov NA, Zakharov AA, Ng ML, Mikkelsen A, Lundgren E, Mårtensson N, Preobrajenski AB. One-dimensional corrugation of the h-BN monolayer on Fe(110). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1775-1781. [PMID: 22185488 DOI: 10.1021/la2035642] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on a new nanopatterned structure represented by a single atomic layer of hexagonal boron nitride (h-BN) forming long periodic waves on the Fe(110) surface. The growth process and the structure of this system are characterized by X-ray absorption (XAS), core-level photoemission spectroscopy (CL PES), low-energy electron microscopy (LEEM), microbeam low-energy electron diffraction (μLEED), and scanning tunneling microscopy (STM). The h-BN monolayer on Fe(110) is periodically corrugated in a wavy fashion with an astonishing degree of long-range order, periodicity of 2.6 nm, and the corrugation amplitude of ∼0.8 Å. The wavy pattern results from a strong chemical bonding between h-BN and Fe in combination with a lattice mismatch in either [111] or [111] direction of the Fe(110) surface. Two primary orientations of h-BN on Fe(110) can be observed corresponding to the possible directions of lattice match between h-BN and Fe(110), with approximately equal area of the boron nitride domains of each orientation.
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Affiliation(s)
- N A Vinogradov
- Department of Physics and Astronomy, Uppsala University, Box 530, 75121 Uppsala, Sweden
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