
Synthesis of uniform single layer WS2 for tunable ... - Nature
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 …
Strong anisotropic enhancement of photoluminescence in WS2 …
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 …
Nonlinear photoluminescence in monolayer WS2 ... - RSC …
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 …
Extraordinary Room-Temperature Photoluminescence in Triangular WS2 …
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 …
The relative PL intensity of WS2 (a) and WSe2 (d) multilayers ...
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.
Photoluminescence Spectroscopy in WS2 Monolayers - Oxford …
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 …
Vertical and in-plane heterostructures from WS2/MoS2 …
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 …
Polarized photoluminescence spectroscopy in WS2, WSe2
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
[1208.1325] Extraordinary room-temperature photoluminescence in WS2 ...
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 …
Photoluminescence (PL) spectra of WS2 layers corresponding to …
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...
3 (a) PL spectra of WS2 monolayer, bilayer, and trilayer. (b) PL ...
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 …
Strain engineering in monolayer WS2 and WS2 nanocomposites
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 …
Tuning the Photoluminescence and Raman Response of Single-Layer WS2 ...
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 …
Temperature-dependent PL spectra of the WSe2/WS2 HB. (a, b)
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.
Revealing Defect-State Photoluminescence in Monolayer WS2 by …
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 …
(a) PL spectra of monolayered, bilayered, and trilayered WS 2 ; (b) PL ...
We systematically investigate the exciton dynamics in monolayer, bilayer, and trilayer WS2 two-dimensional (2D) crystals by time-resolved photoluminescence (TRPL) spectroscopy.
PL spectra of monolayer WS 2 (a) and monolayer MoS 2 (c) before …
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 …
Temperature-dependent PL spectra of the CVD-WS2 monolayer …
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...
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