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Giant moiré patterns and lattice-matched epitaxial graphene grown
(The University of Nottingham, 2018-01-01)
Lattice-matched graphene on hexagonal boron nitride is expected to lead to the formation
of a band-gap but requires the formation of highly strained material and has not hitherto
been realised. We demonstrate that aligned, ...
Van der Waals-induced chromatic shifts in hydrogen-bonded two-dimensional porphyrin arrays on boron nitride
(University of Nottingham, 2015-10-01)
The fluorescence of a two-dimensional supramolecular network of 5,10,15,20-tetrakis(4-carboxylphenyl)porphyrin (TCPP) adsorbed on hexagonal boron nitride (hBN) is redshifted due to, primarily, adsorbate-substrate van der ...
The nucleation and early stages of layer-by-layer growth of metal organic frameworks on surfaces
(University of Nottingham, 2015-09-14)
High resolution atomic force microscopy (AFM) is used to resolve the evolution of crystallites of a metal organic framework (HKUST-1) grown on Au(111) using a liquid-phase layer-by-layer methodology. The nucleation and ...
Strain-engineered graphene grown on hexagonal boron nitride by molecular beam epitaxy
(University of Nottingham, 2016-02-01)
Graphene grown by high temperature molecular beam epitaxy on hexagonal boron nitride (hBN) forms continuous domains with dimensions of order 20 μm, and exhibits moiré patterns with large periodicities, up to ~30 nm, ...
Epitaxial growth of γ-InSe and α, β, and γ-In2Se3 on ε-GaSe
(The University of Nottingham, 2018-05)
We demonstrate that γ-InSe and the α, β and γ phases of In2Se3 can be grown epitaxially on ε-GaSe substrates using a physical vapour transport method. By exploiting the temperature gradient within the tube furnace, we can ...
Supramolecular heterostructures formed by sequential epitaxial deposition of two-dimensional hydrogen-bonded arrays
(The University of Nottingham, 2017-05-16)
Supramolecular heterostructures are formed by growing sequential layers of bi- and mono-component two-dimensional molecular arrays stabilized by hydrogen bonding. The heterostructures are formed on hexagonal boron nitride ...
Quantum confinement and photoresponsivity of β-In2Se3 nanosheets grown by physical vapour transport
(University of Nottingham, 2016-06-01)
We demonstrate that β-In2Se3 layers with thickness ranging from 2.8 – 100 nm can be grown on SiO2/Si, mica and graphite using a physical vapour transport method. The β-In2Se3 layers are chemically stable at room temperature ...
Triplet excitation and electroluminescence from a supramolecular monolayer embedded in a boron nitride tunnel barrier
(The University of Nottingham, 2019-12-10)
We show that ordered monolayers of organic molecules stabilized by hydrogen bonding on the surface of exfoliated few-layer hexagonal boron nitride (hBN) flakes may be incorporated into van der Waals heterostructures with ...
Step-flow growth of graphene-boron nitride lateral heterostructures by molecular beam epitaxy
(The University of Nottingham, 2020-04-20)
Integration of graphene and hexagonal boron nitride (hBN) into lateral heterostructures has drawn focus due to the ability to broadly engineer the material properties. Hybrid monolayers with tuneable bandgaps have been ...
Fluorescence and electroluminescence of J-aggregated polythiophene monolayers on hexagonal boron nitride
(The University of Nottingham, 2020-09-15)
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 ...