Self-assembly of ordered graphene nanodot arrays
| Autor: | Liv Hornekær, Richard Balog, Peter Bøggild, Adam Carsten Stoot, Luca Camilli, Jakob Holm Jørgensen, Jerry Tersoff, Andrew Cassidy, Jerzy T. Sadowski |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Science General Physics and Astronomy Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Article General Biochemistry Genetics and Molecular Biology law.invention CARBON law HETEROSTRUCTURES Molecular self-assembly Nanoscopic scale IR(111) Settore FIS/03 Multidisciplinary Graphene HEXAGONAL BORON-NITRIDE Metamaterial Heterojunction General Chemistry 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 0104 chemical sciences NITROGEN INTERFACE ATOMIC LAYERS Nanoelectronics Quantum dot B-C-N GROWTH Nanodot 0210 nano-technology TRANSITION |
| Zdroj: | Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017) Camilli, L, Jorgensen, J H, Tersoff, J, Stoot, A C, Balog, R, Cassidy, A, Sadowski, J T, Boggild, P & Hornekaer, L 2017, ' Self-assembly of ordered graphene nanodot arrays ', Nature Communications, vol. 8, 47 . https://doi.org/10.1038/s41467-017-00042-4 Nature Communications Camilli, L, Jørgensen, J H, Tersoff, J, Stoot, A C, Balog, R, Cassidy, A, Sadowski, J T, Bøggild, P & Hornekær, L 2017, ' Self-assembly of ordered graphene nanodot arrays ', Nature Communications, vol. 8, no. 1 . https://doi.org/10.1038/s41467-017-00042-4 |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-017-00042-4 |
| Popis: | The ability to fabricate nanoscale domains of uniform size in two-dimensional materials could potentially enable new applications in nanoelectronics and the development of innovative metamaterials. However, achieving even minimal control over the growth of two-dimensional lateral heterostructures at such extreme dimensions has proven exceptionally challenging. Here we show the spontaneous formation of ordered arrays of graphene nano-domains (dots), epitaxially embedded in a two-dimensional boron–carbon–nitrogen alloy. These dots exhibit a strikingly uniform size of 1.6 ± 0.2 nm and strong ordering, and the array periodicity can be tuned by adjusting the growth conditions. We explain this behaviour with a model incorporating dot-boundary energy, a moiré-modulated substrate interaction and a long-range repulsion between dots. This new two-dimensional material, which theory predicts to be an ordered composite of uniform-size semiconducting graphene quantum dots laterally integrated within a larger-bandgap matrix, holds promise for novel electronic and optoelectronic properties, with a variety of potential device applications. The nanoscale patterning of two-dimensional materials offers the possibility of novel optoelectronic properties; however, it remains challenging. Here, Camilli et al. show the self-assembly of large arrays of highly-uniform graphene dots imbedded in a BCN matrix, enabling novel devices. |
| Databáze: | OpenAIRE |
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