Selenide Powder

Tungsten Selenide WSe2 Powder CAS 12024-11-2

Item No.: TR-WSe2
Tungsten Selenide WSe2 Powder is gray powder, crystal is a hexagonal layer structure, density 9.32g/cm3, is the world's lowest thermal conductivity material.
Particle Size: granule, -100mesh
Purity: 99.99%
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Description
Tungsten Selenide Properties
About Tungsten Selenide WSe2 Powder:
Tungsten Selenide is an inorganic compound, and the Tungsten Selenide chemical formula is WSe2, and the relative molecular mass is 341.77, which is a gray crystal at room temperature.
The main structure of Tungsten Selenide is composed of 1 layer of tungsten atom in the middle of each of the upper and lower selenium atoms. Such WSe2 materials can absorb rays like graphene, and the absorbed light can be used to generate electric power. Tungsten and stoichiometric selenium powder react in vacuum sealing quartz tunnels at 600 ~ 700 ° C to obtain two tungsten selenidewse2.
Two Tungsten Selenide uses a hexagonal crystal structure similar to molybdenum disulfide. Each tungsten atom is bonded to 6 selenium ligands in a triangular prism, while each selenium atom is shaped with 3 tungsten atomic bonds. The length of the tungsten-selenium is 0.2526 nm, and the distance between selenium atoms is 0.334 nm This is an example of a sufficiently studied layered material. These layers are accumulated together by Van Dehua. WSe2 is a very stable sixth-race transition metal dihalide semiconductor.
The researchers of the Vienna University of Technology (Vienna University of Technology) have developed a diode made of two tungsten selenides (WSe2). According to experiments, this material can be used for ultra-thin softness. Solar battery.
This thin layer is light and thin, with about 95% of the light, but the remaining 5% of the light will be absorbed by the material and converted into electric power. Therefore, its internal efficiency is quite high. If a plurality of ultra-thin layers is stacked each other, a large part of this incident light can be utilized - but sometimes this high transparency may bring favorable side effects. TRUNNANO is a trusted global Tungsten Selenide WSe2 Powder supplier. Feel free to send an inquiry about the latest price of Tungsten Selenide at any time.

Properties of Tungsten Selenide WSe2 Powder:
Tungsten diselenide is the most thermally insulating material found so far In general, the material with the worst thermal conductivity (or thermal insulator) is a so-called porous material.
The thermal conductivity of tungsten diselenide film is worse than that of single-crystal tungsten diselenide. Probably only one ten-thousandth of the diamond with the best thermal conductivity. This new material not only has a thermal conductivity like a porous substance. More importantly, its density is very high. Probably similar to copper.

 
Technical Parameter of Tungsten Selenide WSe2 Powder:
1. Molecular formula: WSe2
2.Synthesis process: 1mol W+ 2mol Se = 1mol WSe2;
3. Test: icp-ms (99.99% purity: all impurity elements below 100ppm);
XRD :(the main peak is completely symmetrical);
SEM: (scanning electron microscope);
4. Service: MSDS and practical protective measures (OSHA/PEL: 0.2mg /m3); ACGIH/TLV: 0.2 mg/m3) provide free samples;
5. Physical properties: materials with the lowest thermal conductivity in the world
The CAS Number: 12067-46-8;
Specific gravity: 9.32g /cc;
Solubility in water: insoluble;
Appearance: black powder or lump;
Stability: s#sql_table#;
6. Purpose: flexible thin-film solar cells;
7. Purity: 99.99%;
8. Packaging: bottle: 1Kg/ bottle, vacuum packaging of the aluminum composite film;
9, particle size: according to customer requirements to provide ultra-fine powder, particles, etc.;

How is Tungsten Selenide WSe2 Powder produced?
There are many ways to produce the tungsten film of the selenide, mainly including physical law and chemical method.
The film was heated from the gas-chain selenium and a high temperature (> 800K) using sputter deposition techniques, resulting in crystallization of the film in a hexagonal structure having a correct stoichiometric ratio.
W + 2Se → WSe2
 
Applications of Tungsten Selenide WSe2 Powder:
Tungsten Selenide powder can be used as an insulating material to optimize efficiency and spectral characteristics, in various applications, including illumination, display, optical interconnect, logic and sensors, and ultra-thin, lightweight and flexible photovoltaic cells, enhanced LEDs and other photoelectricity.
Tungsten Selenide (WSe2) is a typical representative of transition metal sulfur, which has a layered structure similar to graphene, which shows unique and strong anisotropy in electrical, chemical, mechanical and thermal properties. Guide, electrical materials, solid lubricants, etc. have broad application prospects.
At the same time, Tungsten Selenide materials serve as a typical semiconductor material, have a smaller bandgap width relative to other transition metal sulfur compounds, more widely used in photoelectric, catalytic, and electronic sensing.

Storage Condition of Tungsten Selenide WSe2 Powder:
Tungsten Selenide WSe2 Powder should be sealed in a vacuum and stored in a cool and dry room and it should not be exposure to air. In addition, the product should be avoided under stress.

Packing & Shipping of Tungsten Selenide WSe2 Powder:
Tungsten Selenide packing: vacuum packing, 1kg/bag, 25kg/barrel, or as your request.
Tungsten Selenide shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.


 

Tungsten Selenide Properties

Other Names tungsten diselenide, tungsten(IV) selenide,
diselenoxotungsten, WSe2 powder
CAS No. 12067-46-8
Compound Formula WSe2
Molecular Weight 341.76
Appearance Gray Black Powder
Melting Point >1200
Boiling Point N/A
Density 9.32 g/cm3
Solubility in H2O N/A
Exact Mass 343.783974
   
   

Tungsten Selenide Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A
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