In this work, we use atomic force microscopy (AFM) to investigate the long-term evolution of oxidative defects of tungsten diselenide (WSe 2) in ambient conditions over a period of 75 months, which is the longest such study performed on any layered material.

2025年3月21日 · Bilayer WSe2 transistors exhibit hole/electron mobilities of 119/34 cm²/Vs, while monolayers achieve 105/22 cm²/Vs with suitable metal contacts. ... Figure 2d presents the AFM image of the as ...

2019年6月13日 · 3D-AFM has provided experimental images of the existence of molecular-size hydrophobic layers on graphene, MoS 2 (few and thick layer) and WSe 2 (few and thick layer) and graphite. Those...

2024年6月28日 · Through coupling atomic force microscopy (AFM) nanoindentation techniques and conductive AFM, the ability to finely tune the electronic band structure of WSe 2 is demonstrated. The research offers valuable mechanistic insights into understanding how WSe 2 's electronic properties respond to mechanical strain, a critical prerequisite for the ...

2024年6月11日 · A P-type WSe2 and an N-type MoS2 monolayer were stacked layer-by-layer to build a ultrathin vertical heterojunction using a micro-fabrication method. In situ measurement was employed to characterize the intrinsic PEC performance on a single-sheet heterostructure.

2023年4月17日 · Here, we report a chemomechanical approach to modify SPEs in monolayer WSe2 through the synergistic combination of localized mechanical strain and noncovalent surface functionalization with aryl...

2024年6月1日 · In this study, we perform an in-depth analysis of the prediction of crystal coverage in WSe2 thin film atomic force microscopy (AFM) height maps with supervised regression and segmentation models.

1995年8月15日 · Surfaces of the layered dichalcogenide tungsten diselenide (WSe 2) were investigated on the atomic scale by atomic force microscopy. On (0001) surfaces, lattice resolution was obtained. The observed hexagonal symmetry of the lattice as well as the lattice constant of 0.33 ± 0.01 nm are in good agreement with the crystal structure.

The edge-standing heterojunction, featuring perpendicular PbI2 layers atop WSe2, promotes efficient charge transfer through the edges and coupled localized states, leading to an enhanced ...

2019年2月1日 · Our method, based on a novel ultrafast broadband intrapulse pump-probe near-field imaging, allows direct visualization of EP formation and propagation in WSe 2 showing, at room temperature, ultraslow EP with a group velocity of vg ~ 0.017 c.