By lql | 08 February 2023 | 0 Comments
What is tungsten selenide?
What is Tungsten selenide powder?
Tungsten selenide is a black or gray solid powder with a molar mass of 341.76g/mol and a layered hexagonal structure with a density of 9.32g/cm3, which has poor thermal conductivity. Its thermal conductivity is about one hundred thousandths of that of a diamond with good thermal conductivity. In addition, the band gap of WSe2 is between the wide-gap semiconductor and zero-band gap graphene, which has excellent electrical and optical properties and high quantum yield.
Tungsten selenide is a black or gray solid powder with a molar mass of 341.76g/mol and a layered hexagonal structure with a density of 9.32g/cm3, which has poor thermal conductivity. Its thermal conductivity is about one hundred thousandths of that of a diamond with good thermal conductivity. In addition, the band gap of WSe2 is between the wide-gap semiconductor and zero-band gap graphene, which has excellent electrical and optical properties and high quantum yield.
As a typical compound of transition metal tungsten, tungsten selenide (tungsten diselenide, molecular formula WSe2) has excellent mechanical, electrical, optical, and magnetic properties because of its special crystal structure and is widely used in aerospace, military defense, medical equipment, and other fields.
Preparation method of Tungsten selenide Powder
Its preparation can be divided into two steps. Firstly, tungsten films with different thicknesses are deposited on the substrate by magnetron sputtering, and some tungsten films are annealed for later use. Then, the annealed and unannealed tungsten film samples and a certain amount of selenium powder are packaged and placed in a vacuum quartz tube. Then the packaged sample is placed in a tube furnace, heated and selenized, and the product can be obtained.
Molecular structure of Tungsten selenide Powder
Tungsten selenide is an inorganic compound with a layered structure, which has a hexagonal structure similar to molybdenum disulfide (MoS2). Each tungsten atom will be bonded with six selenium atoms in a triangular prism coordination mode, and each selenium atom will be bonded with three tungsten atoms in a pyramid configuration. The bond length between tungsten and selenium is 2.526, the bond length between selenium and selenium is 3.34, and the bonding between layers is van der Waals force.
Use of Tungsten selenide Powder
(1) It can be well used in photovoltaic devices and ultra-thin LEDs, mainly because the band gap of WSe2 is 1.35 eV, and it has good optical characteristics and physical and chemical stability.
(2) It can be used as an additive to lubricant. WSe2, like molybdenum disulfide and tungsten disulfide, is a low-dimensional layered structure material with a small friction coefficient.
Price of Tungsten selenide Powder
Tungsten selenide powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Tungsten selenide powder. A large amount of large amount will be lower. The price of Tungsten selenide powder can be found on our company's official website.
Tungsten selenide powder supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Tungsten selenide powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Tungsten selenide powder, you are welcome to contact us or inquire any time.
Preparation method of Tungsten selenide Powder
Its preparation can be divided into two steps. Firstly, tungsten films with different thicknesses are deposited on the substrate by magnetron sputtering, and some tungsten films are annealed for later use. Then, the annealed and unannealed tungsten film samples and a certain amount of selenium powder are packaged and placed in a vacuum quartz tube. Then the packaged sample is placed in a tube furnace, heated and selenized, and the product can be obtained.
Molecular structure of Tungsten selenide Powder
Tungsten selenide is an inorganic compound with a layered structure, which has a hexagonal structure similar to molybdenum disulfide (MoS2). Each tungsten atom will be bonded with six selenium atoms in a triangular prism coordination mode, and each selenium atom will be bonded with three tungsten atoms in a pyramid configuration. The bond length between tungsten and selenium is 2.526, the bond length between selenium and selenium is 3.34, and the bonding between layers is van der Waals force.
Use of Tungsten selenide Powder
(1) It can be well used in photovoltaic devices and ultra-thin LEDs, mainly because the band gap of WSe2 is 1.35 eV, and it has good optical characteristics and physical and chemical stability.
(2) It can be used as an additive to lubricant. WSe2, like molybdenum disulfide and tungsten disulfide, is a low-dimensional layered structure material with a small friction coefficient.
Price of Tungsten selenide Powder
Tungsten selenide powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Tungsten selenide powder. A large amount of large amount will be lower. The price of Tungsten selenide powder can be found on our company's official website.
Tungsten selenide powder supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Tungsten selenide powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Tungsten selenide powder, you are welcome to contact us or inquire any time.
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