Second-harmonic generation (SHG) is a well-known nonlinear spectroscopy method to probe electronic structure, specifically, in transition metal dichalcogenide (TMDC) monolayers. This work investigates the dynamics of strongly excited TMDC monolayer by solving time evolution equations for density matrix. It shown that presence excitons qualitatively changes leading, particular, huge enhancement ...

Abstract Despite the plethora of intriguing phenomena observed in heterostructure stacks 2D transition metal dichalcogenide (2D‐TMDC) flakes, their application functional devices is still hampered due to lack reliable growth methodologies for large‐area heterostructures. Here, a scalable process obtaining as‐grown di‐chalcogenide heterostructures by combination atomic layer deposition monolayer...

Ferroelectric oxides interfaced with transition metal dichalcogenides (TMDCs) offer a promising route toward ferroelectric-based devices due to lack of dangling bonds on the TMDC surface leading high-quality and abrupt ferroelectric/TMDC interface. In this work, thermal stability interface is explored by first depositing hafnium zirconium oxide (HZO) directly geological MoS2 as-grown WSe2, foll...

Break junctions in noble-metal films can exhibit electroluminescence (EL) through inelastic electron tunneling. The EL spectrum be tuned by depositing a single-layer crystal of transition-metal dichalcogenide (TMDC) on top. Whereas the emission from gaps between silver or gold nanoparticles formed break junction is spectrally broad, hybrid metal/TMDC structure shows distinct luminescence TMDC m...

Two-dimensional transitional metal dichalcogenide (TMDC) field-effect transistors (FETs) are proposed to be promising for devices scaling beyond silicon-based devices. We explore the different effective mass and bandgap of the channel materials and figure out the possible candidates for high-performance devices with the gate length at 5 nm and below by solving the quantum transport equation sel...

Abstract The effect of curvature on the band alignment one-dimensional (1D) van der Waals (vdW) transition metal dichalcogenide (TMDC) heterostructures is studied by comprehensive first-principles calculations. We find that, as diameter a TMDC nanotube decreases, combined curvature-induced flexoelectricity and circumferential tensile strain causes rapid lowering conduction minimum, whereas vale...

Over the past few years atomically-thin materials, such as graphene, boron nitride and the group-VI transition metal dichalcogenides (TMDC), have stimulated intense interdisciplinary research in condensed matter physics, chemistry and electrical engineering. Due to their unique mechanical, electrical and optoelectronic properties they have already been implemented into flexible electronic and p...