Self-assembly of ordered graphene nanodot arrays
Abstract
Our 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. But, 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. Furthemore, 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.
- Authors:
-
[1];
[1];
[4];
- Technical Univ. of Denmark, Lyngby (Denmark). Center for Nanostructured Graphene
- Aarhus Univ. (Denmark). Dept. of Physics and Astronomy and Interdisciplinary Nanoscience Center iNANO
- T.J. Watson Research Center, New York, NY (United States). IBM Research Division
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1372449
- Report Number(s):
- BNL-114047-2017-JA
Journal ID: ISSN 2041-1723; R&D Project: 16083/16083; KC0403020
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; molecular self-assembly; quantum dots; synthesis of graphene; two-dimensional materials
Citation Formats
Camilli, Luca, Jørgensen, Jakob H., Tersoff, Jerry, Stoot, Adam C., Balog, Richard, Cassidy, Andrew, Sadowski, Jerzy T., Bøggild, Peter, and Hornekær, Liv. Self-assembly of ordered graphene nanodot arrays. United States: N. p., 2017.
Web. doi:10.1038/s41467-017-00042-4.
Camilli, Luca, Jørgensen, Jakob H., Tersoff, Jerry, Stoot, Adam C., Balog, Richard, Cassidy, Andrew, Sadowski, Jerzy T., Bøggild, Peter, & Hornekær, Liv. Self-assembly of ordered graphene nanodot arrays. United States. https://doi.org/10.1038/s41467-017-00042-4
Camilli, Luca, Jørgensen, Jakob H., Tersoff, Jerry, Stoot, Adam C., Balog, Richard, Cassidy, Andrew, Sadowski, Jerzy T., Bøggild, Peter, and Hornekær, Liv. Thu .
"Self-assembly of ordered graphene nanodot arrays". United States. https://doi.org/10.1038/s41467-017-00042-4. https://www.osti.gov/servlets/purl/1372449.
@article{osti_1372449,
title = {Self-assembly of ordered graphene nanodot arrays},
author = {Camilli, Luca and Jørgensen, Jakob H. and Tersoff, Jerry and Stoot, Adam C. and Balog, Richard and Cassidy, Andrew and Sadowski, Jerzy T. and Bøggild, Peter and Hornekær, Liv},
abstractNote = {Our 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. But, 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. Furthemore, 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.},
doi = {10.1038/s41467-017-00042-4},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {Thu Jun 29 00:00:00 EDT 2017},
month = {Thu Jun 29 00:00:00 EDT 2017}
}
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