Now showing items 1-5 of 5
Room temperature up-conversion electroluminescence from a mid-infrared In(AsN) tunnelling diode
(applied physics letters, 2020-04-01)
Light emitting diodes (LEDs) for the mid-infrared (MIR) spectral range require material systems with tailored optical absorption and emission at wavelengths > 2 μm. Here, we report on MIR LEDs based on In(AsN)/(InAl)As ...
Ordering, flexibility and frustration in arrays of porphyrin nanorings
(The University of Nottingham, 2020-04-01)
The two-dimensional packing of cyclic porphyrin polymers, ‘nanorings’, on a graphite surface shows a rich and complex behaviour due to their internal symmetry and flexibility. Depending on the number of porphyrin groups ...
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 ...
Resonant tunnelling into the two-dimensional subbands of InSe layers
(The University of Nottingham, 2020-01-20)
Two-dimensional (2D) van der Waals (vdW) crystals have attracted considerable interest for digital electronics beyond Si-based complementary metal oxide semiconductor technologies. Despite the transformative success of ...
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 ...