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Enhancing optoelectronic properties of SiC-grown graphene by a surface layer of colloidal quantum dots (2017)
Journal Article
Makarovsky, O., Turyanska, L., Mori, N., Greenaway, M., Eaves, L., Patanè, A., …Yakimova, R. (in press). Enhancing optoelectronic properties of SiC-grown graphene by a surface layer of colloidal quantum dots. 2D Materials, 4(3), https://doi.org/10.1088/2053-1583/aa76bb

We report a simultaneous increase of carrier concentration, mobility and photoresponsivity when SiC-grown graphene is decorated with a surface layer of colloidal PbS quantum dots, which act as electron donors. The charge on the ionised dots is spatia... Read More about Enhancing optoelectronic properties of SiC-grown graphene by a surface layer of colloidal quantum dots.

Fast, multicolor photodetection with graphene-contacted p-GaSe/n-InSe van der Waals heterostructures (2017)
Journal Article
Yan, F., Zhao, L., Patanè, A., Hu, P., Wei, X., Luo, W., …Wang, K. (2017). Fast, multicolor photodetection with graphene-contacted p-GaSe/n-InSe van der Waals heterostructures. Nanotechnology, 28(27), Article 27LT01. https://doi.org/10.1088/1361-6528/aa749e

The integration of different two-dimensional materials within a multilayer van der Waals (vdW) heterostructure offers a promising technology for high performance opto-electronic devices such as photodetectors and light sources. Here we report on the... Read More about Fast, multicolor photodetection with graphene-contacted p-GaSe/n-InSe van der Waals heterostructures.

Mobility enhancement of CVD graphene by spatially correlated charges (2017)
Journal Article
Turyanska, L., Makarovsky, O., Eaves, L., Patanè, A., & Mori, N. (2017). Mobility enhancement of CVD graphene by spatially correlated charges. 2D Materials, 4(2), Article 025026. https://doi.org/10.1088/2053-1583/aa55b4

The manuscript presents a strategy for enhancing the carrier mobility of single layer CVD graphene (CVD SLG) based on spatially correlated charges. Our Monte Carlo simulations, numerical modeling and the experimental results confirm that spatial corr... Read More about Mobility enhancement of CVD graphene by spatially correlated charges.

The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals (2016)
Journal Article
Mudd, G., Molas, M., Chen, X., Zólyomi, V., Nogajewski, K., Kudrynskyi, Z. R., …Patanè, A. (2016). The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals. Scientific Reports, 6(1), Article 39619. https://doi.org/10.1038/srep39619

The electronic band structure of van der Waals (vdW) layered crystals has properties that depend on the composition, thickness and stacking of the component layers. Here we use density functional theory and high field magneto-optics to investigate th... Read More about The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals.

High electron mobility, quantum Hall effect and anomalous optical response in atomically thin InSe (2016)
Journal Article
Bandurin, D. A., Tyurnina, A. V., Yu, G. L., Mishchenko, A., Zólyomi, V., Morozov, S. V., …Cao, Y. (2017). High electron mobility, quantum Hall effect and anomalous optical response in atomically thin InSe. Nature Nanotechnology, 12(3), 223-227. https://doi.org/10.1038/nnano.2016.242

© 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. A decade of intense research on two-dimensional (2D) atomic crystals has revealed that their properties can differ greatly from those of the parent compound. These dif... Read More about High electron mobility, quantum Hall effect and anomalous optical response in atomically thin InSe.

Resonant Zener tunnelling via zero-dimensional states in a narrow gap diode (2016)
Journal Article
Di Poala, D. M., Kesaria, M., Makarovsky, O., Velichko, A., Eaves, L., Mori, N., …Patanè, A. (in press). Resonant Zener tunnelling via zero-dimensional states in a narrow gap diode. Scientific Reports, 6, Article e32039. https://doi.org/10.1038/srep32039

Interband tunnelling of carriers through a forbidden energy gap, known as Zener tunnelling, is a phenomenon of fundamental and technological interest. Its experimental observation in the Esaki p-n semiconductor diode has led to the first demonstratio... Read More about Resonant Zener tunnelling via zero-dimensional states in a narrow gap diode.

Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures (2016)
Journal Article
Wallbank, J. . R., Ghazaryan, D., Misra, A., Cao, Y., Tu, J. . S., Piot, B. A., …Mishchenko, A. (2016). Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures. Science, 353(6299), 575-579. https://doi.org/10.1126/science.aaf4621

Chirality is a fundamental property of electrons with the relativistic spectrum found in graphene and topological insulators. It plays a crucial role in relativistic phenomena, such as Klein tunneling, but it is difficult to visualize directly. Here... Read More about Tuning the valley and chiral quantum state of Dirac electrons in van der Waals heterostructures.

Monte Carlo study on anomalous carrier diffusion in inhomogeneous semiconductors (2015)
Journal Article
Mori, N., Hill, R., Patanè, A., & Eaves, L. (2015). Monte Carlo study on anomalous carrier diffusion in inhomogeneous semiconductors. Journal of Physics: Conference Series, 647, Article 012059. https://doi.org/10.1088/1742-6596/647/1/012059

We perform ensemble Monte Carlo simulations of electron diffusion in high mobility inhomogeneous InAs layers. Electrons move ballistically for short times while moving diffusively for sufficiently long times. We find that electrons show anomalous dif... Read More about Monte Carlo study on anomalous carrier diffusion in inhomogeneous semiconductors.

High Broad-Band Photoresponsivity of Mechanically Formed InSe-Graphene van der Waals Heterostructures (2015)
Journal Article
Mudd, G. W., Svatek, S. A., Hague, L., Makarovsky, O., Kudrynskyi, Z. R., Mellor, C. J., …Patanè, A. (2015). High Broad-Band Photoresponsivity of Mechanically Formed InSe-Graphene van der Waals Heterostructures. Advanced Materials, 27(25), 3760-3766. https://doi.org/10.1002/adma.201500889

We exploit the broad-band transparency of graphene and the favorable band line up of graphene with van der Waals InSe crystals to create new functional heterostructures and high-performance photodetectors. The InSe-graphene heterostructure exhibits a... Read More about High Broad-Band Photoresponsivity of Mechanically Formed InSe-Graphene van der Waals Heterostructures.

Ligand-Induced Control of Photoconductive Gain and Doping in a Hybrid Graphene–Quantum Dot Transistor (2015)
Journal Article
Turyanska, L., Makarovsky, O., Svatek, S. A., Beton, P. H., Mellor, C. J., Patanè, A., …Wilson, N. R. (2015). Ligand-Induced Control of Photoconductive Gain and Doping in a Hybrid Graphene–Quantum Dot Transistor. Advanced Electronic Materials, 1(7), 1500062. https://doi.org/10.1002/aelm.201500062

In graphene devices decorated with a layer of near-infrared colloidal PbS quantum dots (QDs), the choice of the QD capping ligands and the integrity of the QD layer have a strong influence on the doping, carrier mobility, and photoresponse. By using... Read More about Ligand-Induced Control of Photoconductive Gain and Doping in a Hybrid Graphene–Quantum Dot Transistor.

Meristematic cell proliferation and ribosome biogenesis are decoupled in diamagnetically levitated Arabidopsis seedlings (2013)
Journal Article
Manzano, A. I., Larkin, O. J., Dijkstra, C. E., Anthony, P., Davey, M. R., Eaves, L., …Medina, F. J. (2013). Meristematic cell proliferation and ribosome biogenesis are decoupled in diamagnetically levitated Arabidopsis seedlings. BMC Plant Biology, 13, Article 124. https://doi.org/10.1186/1471-2229-13-124

Background: Cell growth and cell proliferation are intimately linked in the presence of Earth’s gravity, but are decoupled under the microgravity conditions present in orbiting spacecraft. New technologies to simulate microgravity conditions for long... Read More about Meristematic cell proliferation and ribosome biogenesis are decoupled in diamagnetically levitated Arabidopsis seedlings.

Resonant tunnelling and negative differential conductance in graphene transistors (2013)
Journal Article
Britnell, L., Gorbachev, R., Geim, A., Ponomarenko, L., Mishchenko, A., Greenaway, M., …Eaves, L. (2013). Resonant tunnelling and negative differential conductance in graphene transistors. Nature Communications, 4, Article 1794. https://doi.org/10.1038/ncomms2817

The chemical stability of graphene and other free-standing two-dimensional crystals means that they can be stacked in different combinations to produce a new class of functional materials, designed for specific device applications. Here we report res... Read More about Resonant tunnelling and negative differential conductance in graphene transistors.