Transmission electron microscopy (TEM) studies revealed that MoSe2 and WSe2 have a nanosheet-like structure, and the average lateral dimensions of these NSs are ~ 25 nm and ~ 63 nm, respectively.

In this work, we investigate a popular TMDC material WSe2’s photoluminescence performance using a Raman spectroscopy laser with temperature dependence. With temperature variation, the lattice...

XPS spectra of (a) the as-prepared WSe 2 and (b) Pt-coated (390 sec) WSe 2 films tested during 13 cycles upon illumination (1.5 AM) in 0.5 М H 2 SO 4 . Highly (001)-textured, photoactive WSe2...

Jun 11, 2024 · Large-area synthesis of WSe2 on polyimide (30 x 40 cm2) flexible substrates and 8-in. silicon wafers with good uniformity was demonstrated at the formation temp. of 250 °C confirmed by Raman and X-ray Photoelectron (XPS) spectroscopy.

Mar 28, 2018 · In this study, we initially confirmed the bulk purity and phase using x-ray fluorescence and x-ray diffraction. Large flakes (∼2 × 2 mm) were exfoliated in air and introduced directly to the XPS chamber for analysis. Host Material: WSe …

Mar 10, 2020 · XPS was used to investigate the valences and chemical composition of the Co 3 Se 4 @NC composites. The XPS survey spectrum (figure 4 (a)) shows the presence of C1s, N1s, O1s, Co2p and Se3d signals.

Here, we demonstrate the synthesis of high-quality n-type monolayered WSe 2 flakes using a solid-state precursor for Se, zinc selenide. n-Type transport has been reported with prime electron mobilities of up to 10 cm 2 V −1 s −1.

Nov 22, 2017 · Highly (001)-textured, photoactive WSe 2 thin films have been prepared by an amorphous solid-liquid-crystalline solid process promoted by palladium. By increasing the thickness of the Pd...

Sep 27, 2020 · Here we report the controllable synthesis of CoSe-WSe 2 lateral heterostructures by a two-step growth approach. We show that CoSe can selectively nucleate at the edge of pre-grown WSe 2 nanosheets to form CoSe-WSe 2 metallic-semiconductor lateral heterostructures.

The electrochemical measurements show that the capacitance and conductivity of Co3Se4 are significantly better than those of Co3O4, and Co3Se4 still maintain high capacity at high current...