Feb 27, 2025 · In a breakthrough that promises to revolutionize quantum photonic systems, researchers have successfully demonstrated a high-performance, ultracompact polarization-entangled photon-pair source...

Herein, we compare the bulk, 2H and 3R phases of two most prevalent TMD materials: MoS2 and WS2. The 3R phase outperforms its 2H phase counterpart in hydrogen evolution reaction catalysis and is even comparable with the exfoliated, 1T phase in the case of MoS2.

Aug 23, 2024 · The experimental realization of polarization-entangled photon pair sources relies on the judicious selection of 3R-WS 2 with a R3m space group. 3R-WS 2 presents ABC stacking along the out-of-plane orientation, a feature that breaks inversion symmetry from the monolayer to …

Jan 2, 2025 · Here, we propose a BPVE modulation strategy using 3R-WS 2 to realize reconfigurable and nonvolatile modulation of photoresponsivity and develop a convolutional neural network (CNN) for image...

Feb 15, 2023 · Here, we investigate 3R-stacked transition-metal dichalcogenides as a possible option for high-performance atomically thin field-effect transistors (FETs). We report that the effective mobility of 3R bilayer WS 2 (WSe 2) is 65% (50%) higher than that of 2H WS 2 (WSe 2).

Feb 10, 2024 · The higher stability of thinner 2M WS2 is attributed to stiffened intralayer bonds, enhanced thermal conductivity and higher average barrier per layer during the layer(s)-by-layer(s) phase ...

Mar 26, 2021 · We propose that the degradation of superconductivity in 2M-WS 2 and the reemergence of superconductivity in 3R-WS 2 are mainly attributable to changes in the density of states near the Fermi surface driven by the interlayer coupling.

Jun 18, 2024 · In the present study, we are able to synthesize flakes of the 3R-polytypes of MoS 2 and WS 2 from sodium molybdate and sodium tungstate in the presence of H 2 S gas by solid-state reaction.

Feb 15, 2025 · By employing a molten WO x intermediate, we achieved controlled growth of WS 2 single crystals with varied layer numbers and stacking configurations of 2H and 3R. This method not only facilitates the fabrication of TMD layers beyond monolayers but also provides the ability to tailor their stacking orders.

Oct 7, 2024 · Here, we report a confined-space, hybrid metal–organic chemical vapor deposition method that preferentially grows 3R-WS 2 multilayer films with thickness up to 130 nm. We confirm the 3R stacking structure via polarization-resolved second-harmonic generation characterization and the 3-fold symmetry revealed by anisotropic H 2 O 2 etching.