Two-dimensional transition metal trichalcogenides (TMTCs) feature covalently bonded metal-chalcogen layers separated by the van der Waals (vdW) gap. Similar to dichalcogenides (TMDCs), TMTCs often host charge density waves (CDWs) and superconductivity, but unlike TMDCs, atomic chains in crystal structure give rise quasi one-dimensional (quasi 1D) conduction. ZrTe3 features CDW below TCDW = 63 K...

The quest for a clean, renewable and sustainable energy future has been highly sought by the scientific community over last four decades. Photocatalytic water splitting is very promising technology to proffer solution present day environmental pollution crises generating hydrogen fuel through “green route” without pollution. Transition metal dichalcogenides (TMDCs) have outstanding properties w...

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) have demonstrated a very strong application potential. In order to realize it, the synthesis of stoichiometric 2D TMDCs on large scale is crucial. Here, we consider typical TMDC representative, MoS2, and present an approach for fabrication well-ordered crystalline films via crystallization thin amorphous layer by annealing at 800 °C,...

We study direct and indirect magnetoexcitons in Rydberg states monolayers heterostructures of transition metal dichalcogenices (TMDCs) an external magnetic field, applied perpendicular to the monolayer or framework a Mott-Wannier model excitons. calculate binding energies for $1s, 2s, 3s$, $4s$ by numerical integration Schr\"odinger equation using Rytova-Keldysh potential both Coulomb potential...

Abstract Hybridization effects play a crucial role in determining the electronic properties of hybrid inorganic/organic interfaces. To gain insight into these important interactions, we perform first-principles study based on density-functional theory including spin–orbit coupling, focusing eight representative systems formed by two carbon-conjugated molecules—pyrene and perylene—physisorbed tr...

The two-dimensional (2D) layered electronic materials of transition metal dichalcogenides (TMDCs) have been recently proposed as an emerging canddiate for spintronic applications. Here, we report the exfoliated single layer WS2-intelayer based spin valve effect in NiFe/WS2/Co junction from room temperature to 4.2 K. The ratio of relative magnetoresistance in spin valve effect increases from 0.1...

We investigate the growth mechanism and temperature dependent Raman spectroscopy of chemical vapor deposited large area monolayer of MoS2, MoSe2, WS2 and WSe2 nanosheets up to 70 μm in lateral size. Further, our temperature dependent Raman spectroscopy investigation shows that softening of Raman modes as temperature increases from 80 K to 593 K is due to the negative temperature coefficient and...

In this work, trions in two-dimensional (2D) space are studied by the variational method with trial wavefunctions being constructed 2D slater-type orbitals. Via method, trion energy levels and can be calculated efficiently fairly good accuracy. We first apply to study a hydrogen-like system respect wide range of mass ratios screening lengths. find that ground-state is bound for whole parameter ...

Electronic regulation of two-dimensional (2D) transition metal dichalcogenides (TMDCs) is a crucial step towards next-generation optoelectronics and electronics. Here, we demonstrate controllable selective-area defect engineering in 2D molybdenum disulfide (MoS2) using focused ion beam with low-energy gallium (Ga+) source. We find that the surface defects MoS2 can be tuned by precise control en...