Global ETD Search
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Showing 1 to 10 of 10 for “"Tungsten diselenide"”.
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Quantum Dots In Two-Dimensional Tungsten Diselenide
… two-dimensional transition metal dichalcogenide tungsten diselenide (WSe_2) as a means to evaluate the valley degree of freedom as a potential qubit and ambipolar tungsten diselenide monolayers as single photon sources. Gate-defined quantum dots in monolayer and bilayer WSe_2 were fabricated and …
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Thermal conductivity anisotropy in molybdenum disulfide thin films
… crystal structure of MoS2 and recent results on tungsten diselenide, with a similar structure, lead to the belief that MoS2 may exhibit ultralow thermal conductivity. Thermal conductivities were measured using the time-domain thermoreflectance method. MoS2 samples were prepared with different …
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Visible and Infrared Light Detection Using 2D Materials
… many transition metal dichalcogenides such as tungsten diselenide (WSe₂) have properties such as a large absorption coefficient, ambipolar nature, and a bandgap near ~1.34 eV that make them suitable for solar cell applications. With respect to longer wavelength detection, application of 2D …
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OPTICAL PROPERTIES OF 2D TRANSITION METAL DICHALCOGENIDES ENHANCED BY PLASMONIC NANOSTRUCTURES
… transition metal dichalcogenides (TMDCs) such as tungsten diselenide (WSe2) and molybdenum disulfide (MoS2) have impressive properties arising from the atomically-thin nature and have been demonstrated to be potentially useful building blocks for optoelectronic integrated circuits. An important …
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Large scale applications of 2D materials for sensing and energy harvesting
… Deposition (CVD) 2D material transistors, and tungsten diselenide (WSe₂) photovoltaic devices that were produced through a combination of printing and conventional microfabrication processes. Each of these components were designed with the purpose of fitting into a "smart skin" system that …
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Enhancing the Light output of Solid State Emitters
… light out of 2D materials. It was found that for Tungsten Diselenide (WSe2) the solid immersion lens increased the intensity of the emitted photoluminescence, as well as preventing the monolayer from degrading. This method could prove to be an excellent method for increasing the light output of 2D …
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Optical investigation of many-body interactions in transition metal dichalcogenide heterostructures
… devices. First, monolayer and bilayer tungsten diselenide (WSe2) and molybdenum diselenide (MoSe2) are investigated under varying carrier concentration. The doping dependent dispersions of the exciton-polarons are shown to be excellent probes of the distinctive band structures of these …
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Electronic properties and device applications of rotationally controlled van der Waals heterostructures
… ν = ±1, ±2, ±3. We demonstrate dual-gated tungsten diselenide (WSe₂) interlayer tunneling devices, consisting of two WSe₂ monolayers with controlled rotational alignment, and separated by a thin hBN tunnel barrier. In samples where the two WSe₂ have a 0° relative twist the tunneling …
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Electrical properties of metal/wse2structures
The formation of low resistance metal contacts on two-Dimensional layer (2-D) of WSe2 is a big challenge. In this research, a comparative study is presented on the electrical properties of metal/WSe2 Schottky barrier diodes with various metals such as Au, In, Al, and Ga in the temperature range of …
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High Yield Fabrication of Monolayer WSe₂ Mechanical Resonators and a Study of Their Loss Mechanisms
… quantum systems over long distances. Monolayer tungsten diselenide (WSe<sub>2</sub>) mechanical resonators have great potential as an answer to this demand: possessing large zero-point motion, being optically active due to its direct bandgap, and its ability to host quantum emitters. In order …