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Epitaxy of boron nitride monolayers for graphene-based lateral heterostructures (2021)
Journal Article
Wrigley, J., Bradford, J., James, T., Cheng, T. S., Thomas, J., Mellor, C. J., …Beton, P. H. (2021). Epitaxy of boron nitride monolayers for graphene-based lateral heterostructures. 2D Materials, 8(3), 1-10. https://doi.org/10.1088/2053-1583/abea66

Monolayers of hexagonal boron nitride (hBN) are grown on graphite substrates using high-temperature molecular beam epitaxy (HT-MBE). The hBN monolayers are observed to grow predominantly from step edges on the graphite surface and exhibit a strong de... Read More about Epitaxy of boron nitride monolayers for graphene-based lateral heterostructures.

Natural optical activity as the origin of the large chiroptical properties in π-conjugated polymer thin films (2020)
Journal Article
Wade, J., Hilfiker, J. N., Brandt, J. R., Liirò-Peluso, L., Wan, L., Shi, X., …Fuchter, M. J. (2020). Natural optical activity as the origin of the large chiroptical properties in π-conjugated polymer thin films. Nature Communications, 11(1), Article 6137. https://doi.org/10.1038/s41467-020-19951-y

Polymer thin films that emit and absorb circularly polarised light have been demonstrated with the promise of achieving important technological advances; from efficient, high-performance displays, to 3D imaging and all-organic spintronic devices. How... Read More about Natural optical activity as the origin of the large chiroptical properties in π-conjugated polymer thin films.

Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride (2020)
Journal Article
Mendelson, N., Chugh, D., Reimers, J. R., Cheng, T. S., Gottscholl, A., Long, H., …Aharonovich, I. (2021). Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride. Nature Materials, 20(3), 321-328. https://doi.org/10.1038/s41563-020-00850-y

Single-photon emitters (SPEs) in hexagonal boron nitride (hBN) have garnered increasing attention over the last few years due to their superior optical properties. However, despite the vast range of experimental results and theoretical calculations,... Read More about Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride.

Fluorescence and Electroluminescence of J-Aggregated Polythiophene Monolayers on Hexagonal Boron Nitride (2020)
Journal Article
Kerfoot, J., Svatek, S. A., Korolkov, V. V., Taniguchi, T., Watanabe, K., Antolin, E., & Beton, P. H. (2020). Fluorescence and Electroluminescence of J-Aggregated Polythiophene Monolayers on Hexagonal Boron Nitride. ACS Nano, 14(10), 13886–13893. https://doi.org/10.1021/acsnano.0c06280

The photophysics of a semiconducting polymer is manipulated through molecular self-assembly on an insulating surface. Adsorption of polythiophene (PT) monolayers on hexagonal boron nitride (hBN) leads to a structurally induced planarization and a reb... Read More about Fluorescence and Electroluminescence of J-Aggregated Polythiophene Monolayers on Hexagonal Boron Nitride.

Epitaxial multilayers of alkanes on two-dimensional black phosphorus as passivating and electrically insulating nanostructures (2019)
Journal Article
Bolognesi, M., Brucale, M., Lorenzoni, A., Prescimone, F., Moschetto, S., Korolkov, V. V., …Toffanin, S. (2019). Epitaxial multilayers of alkanes on two-dimensional black phosphorus as passivating and electrically insulating nanostructures. Nanoscale, 11(37), 17252-17261. https://doi.org/10.1039/c9nr01155b

© The Royal Society of Chemistry. Mechanically exfoliated two-dimensional (2D) black phosphorus (bP) is epitaxially terminated by monolayers and multilayers of tetracosane, a linear alkane, to form a weakly interacting van der Waals heterostructure.... Read More about Epitaxial multilayers of alkanes on two-dimensional black phosphorus as passivating and electrically insulating nanostructures.

Coherent acoustic phonons in van der Waals nanolayers and heterostructures (2018)
Journal Article
Greener, J. D., Akimov, A. V., Gusev, V., Kudrynskyi, Z., Beton, P. H., Kovalyuk, Z. D., Taniguchi, T., Watanabe, K., Kent, A., & Patanè, A. (2018). Coherent acoustic phonons in van der Waals nanolayers and heterostructures. Physical Review B, 98(7), Article 075408. https://doi.org/10.1103/PhysRevB.98.075408

Terahertz (THz) and sub-THz coherent acoustic phonons have been successfully used as probes of various quantum systems. Since their wavelength is in the nanometer range, they can probe nanostructures buried below a surface with nanometer resolution a... Read More about Coherent acoustic phonons in van der Waals nanolayers and heterostructures.

Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers (2018)
Journal Article
Kerfoot, J., Korolkov, V. V., Nizovtsev, A. S., Jones, R., Taniguchi, T., Watanabe, K., Lesanovsky, I., Olmos, B., Besley, N. A., Besley, E., & Beton, P. H. (2018). Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers. Journal of Chemical Physics, 149(5), Article 054701. https://doi.org/10.1063/1.5041418

We have investigated the influence of the substrate on the fluorescence of adsorbed organic molecules. Monolayer films of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI), a supramolecular network formed from PTCDI and melamine, and perylen... Read More about Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers.

High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes (2018)
Journal Article
Cheng, T. S., Summerfield, A., Mellor, C. J., Khlobystov, A. N., Eaves, L., Foxon, C. T., Beton, P. H., & Novikov, S. V. (2018). High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes. Materials, 11(7), https://doi.org/10.3390/ma11071119

Hexagonal boron nitride (hBN) has attracted much attention as a key component in van der Waals heterostructures and as a wide band gap material for deep-ultraviolet devices. We have recently demonstrated plasma-assisted molecular beam epitaxy (PA-MBE... Read More about High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes.

Moiré-modulated conductance of hexagonal boron nitride tunnel barriers (2018)
Journal Article
Summerfield, A., Kozikov, A., Cheng, T. S., Davies, A., Cho, Y.-J., Khlobystov, A. N., Mellor, C. J., Foxon, C. T., Watanabe, K., Taniguchi, T., Eaves, L., Novoselov, K. S., Novikov, S. V., & Beton, P. H. (in press). Moiré-modulated conductance of hexagonal boron nitride tunnel barriers. Nano Letters, https://doi.org/10.1021/acs.nanolett.8b01223

Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré superlattice between the hB... Read More about Moiré-modulated conductance of hexagonal boron nitride tunnel barriers.