77 citations · 305 across the 10 of their papers we have counts for
8 papers
Dipolar interlayer excitons in transition metal dichalcogenide alloy heterobilayers
E. Katsipoulaki, N. G. Chatzarakis, E. Rigoutsou +6
Interlayer excitons in transition metal dichalcogenide (TMD) heterobilayers possess a permanent electric dipole moment and long recombination lifetimes, making them a promising pla…
Spin-valley polarization control in WSe monolayers using photochemical doping
E. Katsipoulaki, K. Mourzidis, V. Jindal +9
We report on the influence of a photochemical doping method on the spin-valley polarization degree () of excitons in WSe monolayers. By varying the carrier density and t…
Electron density control in tungsten diselenide monolayers via photochlorination
E. Katsipoulaki, G. Vailakis, I. Demeridou +8
Modulation of the Fermi level using an ultraviolet (UV)-assisted photochemical method is demonstrated in tungsten diselenide monolayers. Systematic shifts and relative intensities…
Prominent room temperature valley polarization in WS2/graphene heterostructures grown by chemical vapor deposition
Ioannis Paradisanos, Kathleen M. McCreary, Davoud Adinehloo +8
We examine different cases of heterostructures consisting of WS2 monolayers grown by chemical vapor deposition (CVD) as the optically active material. We show that the degree of va…
Twist Angle mapping in layered WS2 by Polarization-Resolved Second Harmonic Generation
Sotiris Psilodimitrakopoulos, Leonidas Mouchliadis, Ioannis Paradisanos +4
Stacked atomically thin transition metal dichalcogenides (TMDs) exhibit fundamentally new physical properties compared to those of the individual layers. The twist angle between th…
Room temperature observation of biexcitons in exfoliated WS2 monolayers
I. Paradisanos, S. Germanis, N. T. Pelekanos +4
Single layers of WS2 are direct gap semiconductors with high photoluminescence (PL) yield holding great promise for emerging applications in optoelectronics. The spatial confinemen…
Spatial Non-Uniformity in Exfoliated WS2 Single layers
I. Paradisanos, N. Pliatsikas, P. Patsalas +4
Monolayers of Transition Metal Dichalcogenides (TMDs) are atomically thin two-dimensional crystals with attractive optoelectronic properties, which are promising for emerging appli…
Intense femtosecond photoexcitation of bulk and monolayer MoS2
I. Paradisanos, E. Kymakis, C. Fotakis +2
The effect of femtosecond laser irradiation on bulk and single-layer MoS2 on silicon oxide is studied. Optical, Field Emission Scanning Electron Microscopy (FESEM) and Raman micros…