Track topics on Twitter Track topics that are important to you
Atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDCs) are attractive for applications in a wide range of optoelectronic devices, due to their tremendous interesting physical properties. However, the photoluminescence quantum yield (PLQY) of TMDCs has been found to be too low, due to abundant defects and strong many-body effect. Here, we present a direct physical vapor growth of WO3-WS2 bilayer heterostructures, with WO3 monolayer domains attached on the surface of large-size WS2 monolayers. Optical characterizations revealed that the PLQY of the as-grown bilayer WO3-WS2 heterostructures can reach up to 11.6 %, which is two orders of magnitude higher than that of WS2 monolayers by physical vapor deposition growth method (PVD-WS2) and about 13-times higher than that of mechanical exfoliated WS2 (ME-WS2) monolayers, representing the highest PLQY reported for direct growth TMDCs materials so far. The PL enhancement mechanism has been well investigated by time-resolved optical measurements. The fabrication of WO3-WS2 heterostructures with ultra-high PLQY provides an efficient approach for the development of highly efficient 2D integrated photonic applications.
This article was published in the following journal.
Name: Journal of the American Chemical Society
Using 4-connected pyrene-based building blocks with D symmetry and 2-connected fluorene-based linker with C symmetry, a 2D porous organic framework is obtained via imine condensation, PAF-130. PAF-130...
The modulation of complex GaAs/AlGaAs core-shell nanowire heterostructures by the process of embedding GaAs quantum wells or AlGaAs quantum dots is feasible due to their minor lattice mismatch. In thi...
The rational control of the nucleation and growth kinetics to enable the growth of 2D vertical heterostructure remains a great challenge. Here, an in-depth study is provided toward understanding the g...
High photoluminescence quantum yield (PLQY) is required to reach optimal performance in solar cells, lasers and light-emitting diodes (LEDs). Typically, PLQY can be increased by improving the material...
We report on the synthesis of edge-controlled and highly fluorescent few-layer graphene quantum dots (GQDs) using different solvents and explore their application in the confocal imaging of cancer cel...
The objetive of the study is to evaluate the effect of personalized quantum sonotherapy on the level of anxiety and pain in outpatients schedule for orthopedic surgery under regional anest...
To evaluate and compare PK/PD, safety and tolerability of monolayer combination of Gemigliptin/Rosuvastatin 50/20mg and bilayer combination of Gemigliprin/Rosuvastatin 50/20mg in healthy a...
The purpose of the study is to evaluate the safety and efficacy of the composite Nail - the Quantum interlocking intramedullary nailing system in the reduction of humeral fractures.
It is the purpose of this study to evaluate the relationship between a low transverse, vertical midline, and supra-panicular high transverse skin incisions and the rate of wound complicati...
The proposed study design is a randomized controlled trial, split mouth design, to compare the two different vertical augmentation procedures: Titanium mesh (Ti-mesh) technique and Guided ...
Nanometer sized fragments (the dots) of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They are brighter and more persistent than organic chemical INDICATORS. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY.
The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250)
Surgical procedures involving the STOMACH and sometimes the lower ESOPHAGUS to correct anatomical defects, or to treat MORBID OBESITY by reducing the size of the stomach. There are several subtypes of bariatric gastroplasty, such as vertical banded gastroplasty, silicone ring vertical gastroplasty, and horizontal banded gastroplasty.
The expelling of virus particles from the body. Important routes include the respiratory tract, genital tract, and intestinal tract. Virus shedding is an important means of vertical transmission (INFECTIOUS DISEASE TRANSMISSION, VERTICAL).
The transmission of infectious disease or pathogens. When transmission is within the same species, the mode can be horizontal or vertical (INFECTIOUS DISEASE TRANSMISSION, VERTICAL).