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Micro-reflectance and transmittance spectroscopy: a versatile and powerful tool to characterize 2D materials
Riccardo Frisenda, Yue Niu, Patricia Gant +9
Optical spectroscopy techniques such as differential reflectance and transmittance have proven to be very powerful techniques to study 2D materials. However, a thorough description…
Engineering the optoelectronic properties of MoS2 photodetectors through reversible noncovalent functionalization
Aday J. Molina-Mendoza, Luis Vaquero-Garzon, Sofia Leret +3
We present an easy drop-casting based functionalization of MoS2-based photodetectors that results in an enhancement of the photoresponse of about four orders of magnitude, reaching…
Highly responsive UV-photodetectors based on single electrospun TiO2 nanofibres
Aday J. Molina-Mendoza, Alicia Moya, Riccardo Frisenda +9
In this work we study the optoelectronic properties of individual TiO2 fibres produced through coupled sol-gel and electrospinning, by depositing them onto pre-patterned Ti/Au elec…
Strong quantum confinement effect in the optical properties of ultrathin α-In2Se3
Jorge Quereda, Robert Biele, Gabino Rubio-Bollinger +3
The effect of quantum confinement in the optical absorption spectra of atomically thin α-In2Se3 crystals is studied, observing a huge thickness-dependent shift in the optical band…
Environmental Effects in Mechanical Properties of Few-layer Black Phosphorus
Miriam Moreno-Moreno, Guillermo Lopez-Polin, Andres Castellanos-Gomez +2
We report on the mechanical properties of few-layer black phosphorus (BP) nanosheets, in high vacuum and as a function of time of exposure to atmospheric conditions [1]. BP flakes…
Why all the fuss about 2D semiconductors?
Andres Castellanos-Gomez
Graphene is no longer alone; a family of atomically thin 2D semiconductors has emerged. Optoelectronics and photonics applications are in their experimental infancy but the future…
Enhanced superconductivity in atomically thin TaS2
Efrén Navarro-Moratalla, Joshua O. Island, Samuel Mañas-Valero +11
The ability to exfoliate layered materials down to the single layer limit has opened the opportunity to understand how a gradual reduction in dimensionality affects the properties…
Thickness dependent interlayer transport in vertical MoS2 Josephson junctions
Joshua O. Island, Gary A. Steele, Herre S. J. van der Zant +1
We report on observations of thickness dependent Josephson coupling and multiple Andreev reflections (MAR) in vertically stacked molybdenum disulfide (MoS2) - molybdenum rhenium (M…