Nov 23, 2017 · Here we report the scalable synthesis of uniform single-layer WS 2 film by a two-step chemical vapor deposition (CVD) method followed by a laser thinning process. The PL …

May 12, 2021 · For the indirect bandgap transition in bilayer WS 2, multifold enhancement can be achieved with the photoluminescence (PL) polarization either perpendicular or parallel to the …

Apr 28, 2017 · We found a red shift and parabolic intensity increase in the PL emission of the monolayer WS 2 with the increasing excitation power and the decay time constants …

Nov 29, 2012 · Here we describe the direct synthesis of WS 2 monolayers with triangular morphologies and strong room-temperature photoluminescence (PL). The Raman response as …

This research explores the impact of the number of WS2 layers on the ability to detect gases by examining the layer-dependent sensing performance of WS2-based gas sensors.

With the help of the Shamrock 500i spectrograph and the iDus 420 CCD detector, the Raman spectrum and the PL spectra of monolayer as a function of liquid gating voltage can be …

Sep 28, 2014 · Here, we report a scalable single-step vapour phase growth process for the creation of highly crystalline vertical stacked bilayers and in-plane interconnected WS 2 /MoS …

Aug 1, 2021 · In this work, we study the polarized PL spectroscopy of WS 2, WSe 2, and bilayer WS 2 /WSe 2 heterostructures using radially and azimuthally polarized laser beams. Excitation …

Here we describe the direct synthesis of WS2 monolayers with triangular morphologies and strong room-temperature photoluminescence (PL). Bulk WS2 does not present

Aug 7, 2012 · Here we describe the direct synthesis of WS2 monolayers with triangular morphologies and strong room-temperature photoluminescence (PL). Bulk WS2 does not …

Monolayer tungsten disulfide (WS2) with a direct band gap of ca. 2.0 eV and stable properties has been a hotspot in two-dimensional (2D) nanoelectronics and optoelectronics. However, it...

Transparent p-CuI/n-SiZnSnO (SZTO) heterojunction diodes are successfully fabricated by thermal evaporation of a (111) oriented p-CuI polycrystalline film on top of an amorphous n …

Aug 25, 2020 · In this present study, PL and Raman spectroscopy have been combined to monitor the strain distribution and stress transfer of monolayer WS 2 on a flexible polymer …

The origin of the variation of photoluminescence (PL) spectra of monolayer tungsten disulfide (WS 2) is investigated systematically. Dependence of the PL spectrum on the excitation power …

Chemical vapor deposited WS 2 monolayers are subjected for the first time to controlled pure biaxial tensile strain up to 0.7%. From photoluminescence (PL) spectroscopy, the trion and …

The emission energies of WSe2 and WS2 both exhibit a redshift with increasing temperature (Figure 2 b), whereas the emission energies of interlayer excitons shows a non-monotonic shift.

Jun 13, 2016 · We show that cryogenic photoluminescence spectroscopy (PL) is a highly sensitive technique to the detection of oxidation induced degradation of monolayer tungsten disulfide …

We systematically investigate the exciton dynamics in monolayer, bilayer, and trilayer WS2 two-dimensional (2D) crystals by time-resolved photoluminescence (TRPL) spectroscopy.

Remarkable improvement in PL intensity in sulfur-based compounds, such as MoS2 and WS2, has almost been established by chemical treatment methods, such as p-type dopants and …

For ML-WS2, the PL spectra are strongly dependent on the external temperature ( Figure 6). As the temperature is varied from 293 K to 433 K, the transition energy of A-exciton can be actively...