selenide

What are the characteristics of selenide?

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Selenide properties Selenides are compounds that contain selenium ions. Se2- is similar to sulfides in that it can only exist when strong alkaline solution exists. In neutral solution, it becomes HSe, and in acidic solutions, H2Se. Some selenides easily react with air oxygen, while metal selenides dissolve more easily than sulfides. Active metal selenide can be prone for oxidation, or to dissolves reaction. Aluminum selenide can oxidize in moist atmosphere and dissolve rapidly, releasing highly poisonous dissolve selenide gases.
Selenide minerals: types and forms
Selenide minerals co-exist in most cases with sulfide mineral. Selenide minerals include white and red selenite. Polyselenide, a compound that contains the Sen2- anion, is called polyselenide. These compounds can be made by eutecticizing elements in quartz tubes.

What are the different types of selenide? powder ?
Tongrun can provide you with powders such as antimony selenide.

Is selenide poisonous?
Selenium acts as an antagonist to some toxic substances. It detoxifies heavy metals, such as mercury and lead. It can also reduce or delay lipofuscin production, slow down the aging of cells, and help the body to absorb and organize iodine. Selenium inorganic is toxic and can lead to hair loss, rotten nails, etc. How to put out a selenide flame? If cyanide or selenide catches fire, it can’t be put out with water mist, only carbon dioxide.

Bismuth Selenide: A new material that is leading the revolution in semiconductors
Researchers used bismuth selenide. The researchers also used “sputtering”, a thin film depositing technique that is driven by momentum exchanges between ions and the atoms of the target material. It is the very first time that the sputtering technique has been applied to the production of topological insulator material that can be used by the semiconductor and magnetic materials industry. Sputtering produces nanoparticles that are smaller than six nanometers. This layer changes the behavior and physical properties of the material. The researchers discovered that this material has 18 times the efficiency of existing materials for computing processing and memory.

Selenide is a very expensive material Powder ?
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in supplying super-high-quality chemicals and nanomaterials. Our company is currently developing a range of powder materials. Our OEM service is also available. Contact us if selenide is what you’re looking for. You can also click on any of the products you need to send us a request.

Zinc Selenide ZnSe Powder CAS 1315-09-9

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About Zinc Selenide ZnSe Powder:
Zinc Selenide (Zinc Selenide) is an inorganic compound with the molecular formula ZnSe and a molecular weight of 144.35. It is a yellow cubic crystal system. Relative density 5.65, refractive index 2.89. Sublimation. The transmittance of infrared light with a wavelength less than 15 μm is more than 60%. See light quickly turns red, long time in the air or in the case of dilute nitric acid easy to decompose. Zinc selenide is insoluble in water but reacts with acids to form a toxic hydrogen selenide gas.
Zinc selenide (ZnSe) is composed of zinc (Zn) and selenium (Se). It is an intrinsic semiconductor with a bandgap of about 2.70eV at 25°C(77°F).ZnSe, which is rarely found in nature, is found in a mineral called Steele stone, named after Hans Steele.ZnSe has two crystal structures: hexagonal (wurtzite) and square (sphalerite).
ZnSe is a wideband gap semiconductor of the II-VI semiconductor family (because zinc and selenium belong to groups 12 and 16 of the periodic table, respectively).The material may be doped with n-type doping, for example, halogen elements. P-type doping is more difficult but can be achieved by introducing gallium
Zinc selenide is composed of selenium and zinc Ⅱ – Ⅵ compound semiconductor materials, heated to a certain temperature in the air will be oxidized to carbon dioxide selenium and zinc oxide, forbidden bandwidth is 2.6 eV. It is a compound semiconductor that can emit a range of visible light from yellow to blue materials. Feel free to send an inquiry to get the latest price if you would like to buy Zinc Selenide ZnSe Powder in bulk.

Properties of Zinc Selenide ZnSe Powder :

Zinc selenide has a chemical formula of ZnSe and a molecular weight of 144.33. It is a light yellow solid compound and insoluble in water. It is prepared by the reaction of zinc chloride, zinc sulfate, etc. with hydrogen selenide. Widely used in the fields of laser, medicine, astronomy and infrared night vision. The zinc selenide material is a yellow transparent polycrystalline material with a crystal particle size of about 70 μm and a light transmission range of 0.5-15 μm. The chemical vapor deposition (CVD) method basically has no impurity absorption, and the scattering loss is extremely low. Because of its small absorption of 10.6μm wavelength light, it has become the material of choice for the manufacture of optical devices in high-power CO2 laser systems. In addition, it is a material commonly used in different optical systems in its entire light transmission band.
 

Specification of Zinc Selenide ZnSe Powder : 
Zinc Selenide MFZnSe
Zinc SelenideColorlight yellow
Zinc Selenide Weight144
Zinc SelenideMelting point1100℃
Zinc SelenideCAS No.1315-09-9
Zinc SelenideEINECS No.215-259-7
Zinc Selenide Density5.42 g/cm3


How is Zinc Selenide ZnSe Powder produced?
Zinc selenide can be prepared by the reaction of H2Se with ZnSO4 solution, or by the reaction of ZnO, ZnS and Se mixed and heated to 800 ℃. Used as a catalyst for the organic synthesis of acetone from isopropanol. A compound containing Cd with a small amount Of Zn is Called a Phosphor.
1. Dilute solution of zinc sulfate buffered with ammonium acetate is added to the saturated solution of H2Se, and H2Se gas diluted with N2 or H2 is added to the solution (formed by the reaction of Al2Se3 and dilute hydrochloric acid) . The precipitated vessel is heated over a steam bath and the excess H2Se gas is absorbed in a wash bottle containing concentrated nitric acid. If the zinc salt solution is introduced too fast or the concentration is too high, the white precipitate will be formed, and it will take a long time to change to the yellow ZnSe.Yellow ZnSe precipitates are difficult to filter and need to be separated by centrifugation. The separated precipitate was washed first with boiled dilute ammonia and then with methanol. The cleaned ZnSe precipitates were first dried in a vacuum dryer containing CaCl2.Then, It was dried in a dryer containing P2O5 AT 120 ° C.
Zinc selenide is very sensitive to air when it is wet. Therefore, the dried product needs to be placed in the glass tube, heated at 600 ℃, H2 or H2Se atmosphere for 2 ~ 4h, to remove the oxidized product.
2. A mixture of 4g zinc oxide, 2.5g zinc sulfide and 6g selenium was placed in a quartz crucible in the lid and heated at 800℃ for 15 minutes to obtain the ZnSe product.

Applications of Zinc Selenide ZnSe Powder:
ZnSe is grown in melt under excess inert gas pressure (usually Ar). When there is no absorption and inclusions, it is very suitable for 10.6 μm wavelength CO2 laser optics. Therefore, ZnSe is a very important infrared material. It has a very wide transmission wavelength range (0.45 ~ 21.5 μm). The refractive index of 550 nm (green) and 2.40 refractive index was 10.6 μm (LWIR). In addition, ZnSe applications include:
1. ZnSe can be used as a fluorescent material and a semiconductor dopant;
2. ZnSe is widely used in laser, medicine, astronomy and infrared fields.
3. Znse is used to make infrared transmitted materials and infrared optical instruments
4. ZnSe is used to form an II-Vi LED and diode laser. It produces blue light.
Cr Doped ZnSe (ZnSe: Cr) is used as an infrared laser gain medium with an emission wavelength of about 2.4 μm.
5. Activated ZnSe (ZnSe (TE)) is a scintillator having 640 nm, which is suitable for matching the photodiode. It is used for X-rays and gamma-ray detectors. The ZnSe scintillator is obviously different from the ZnS scintillator.


Packing & Shipping of Zinc Selenide ZnSe Powder :
Zinc Selenide ZnSe Powder packing: vacuum packing, 1kg/bag, 25kg/barrel, or as your request.
Zinc Selenide ZnSe Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Zinc Selenide ZnSe Powder CAS 1315-09-9插图

Zinc Selenide ZnSe Powder Properties

Other NamesZinc Selenide, IR grade zinc selenide, Zinc monoselenide,
Stilleite, selanylidenezinc, selenoxozinc, Zn-Se, Zn-SE-04-P, Zn3Se2
CAS No.1315-09-9
Compound FormulaZnSe
Molecular Weight144.35
AppearanceLight yellow crystalline solid
Melting Point1520-1525 °C
Solubility in water0.001g/100g water
Density5.27 g/cm3
Purity99.90%
Particle Sizegranule, -100mesh
Boling pointN/A
Specific Heat340 J/kg-K
Thermal Conductivity18 W/m-K (@ 298K)
Thermal Expansion7.3 µm/m-K
Young’s Modulus67.2-69 GPa
Exact Mass143.845668
Monoisotopic Mass 143.845673 Da
  
  

Zinc Selenide ZnSe Powder Health & Safety Information

Safety WarningDanger
Hazard StatementsH301-H331-H373-H410
Flashing pointN/A
Hazard CodesT,N
Risk Codes23/25-33-50/53
Safety Statements20/21-28-45-60-61
RTECS NumberN/A
Transport InformationUN 3283 6.1/PG 2
WGK Germany3
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Antimony Selenide, A New Research Achievement of Thin Film Solar Cell

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Features for Thin Film Solar Cells The energy crisis has led to a rise in energy problems such as the loss of oil, natural gas and coal. This combined with the fact that the quality of the environment is declining makes it difficult for countries to develop new energy solutions. Low production costs, excellent low light and high temperatures power generation performance as well as light weight and flexibility make thin-film solar cell competitive with silicon-based cells. They also have advantages in other areas such photovoltaic build integration and mobile power supply.

Benefits of Antimony Selenide Tin Film Solar Cells

Cadmium Telluride cells (CdTe), which are currently the most well-known thin film solar cells available, is highly toxic. Cadmium is also scarce. Professor Tang has directed his research efforts to develop a thin-film antimony selenide solar cell. This new method is based on CdTe (cadmium telluride) cells. But, telluride can be toxic, and there are very few cadmium. Common quartz tube furnace is used for this process. This method is more cost-effective than RTE and has a simpler equipment design.

Optimizement Results for Antimony Selenide Thin Film Solar Cell

Following systematic optimization in the process for antimony selenide thick film preparation, the research group achieved the certified photoelectric conversion rate of 7.6% antimony selenide thickness film solar cell. The current world record is 7.6% for solar cell efficiency using antimony selenide. Rmcplant (aka. Rmcplant is an advanced material. With over 12 years’ experience, Rmcplant is an established global supplier of chemical materials and manufacturer. High purity and fine particles are the hallmarks of our [( Selenide animony]] products. We can help you if your requirements are lower.
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Tungsten Selenide Greatly Promotes the Development of Photon Technology

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What exactly is Tungsten Selenide Selenide tungsten (WSe2) (type 2 d material) is a graphene type 2. Its structure is composed the the top layer of selenium/tungsten atom connections between tungstenatoms. This layer has high electrical conductivity, an atomic thickness, fast electron transfers, constraint spin and other special properties. Furthermore, two selenide-tungsten, the lowest in thermal conductivity materials, is 100000th the size of a diamond. You can use tungsten selenide in many areas, such as photoelectricity, biosensors and supercapacitors.

Research significance of photonics

Photonics refers to the science of studying information carrier with photon. This has broad applications in photodetector, semiconductor laser and optical communication device as well as new materials. For the advancement of photonic technology, and for future research into the process of creating photonic devices, it is vital to understand and investigate the photonic generator process.

Tungsten Selenide In Photonic Technology

Researchers discovered that the tungsten selenide was composed of many “co-oscillations”, that are sensitive and responsive to photon absorption. One of WSe2’s oscillations was chosen by the team, which was called D excitons and another pulse (1, 2) was applied. This resulted in one of the two pulses switching to an A exciton while the other pulse (1, 2) was changed to an A exciton. Their sum frequency (1+2) was then switched to A D exciton with A signal that was 20 times greater than the single resonant. SFG produces photons with a higher intensity than SHG. These are just a few of the many benefits that advanced photonic devices have. Not only does the double resonance SFG technique provide new scientific methods for microscopic, nonlinear spectral, and optical analysis but it also allows for new nonlinear optics techniques and nonlinear optometry using two-dimensional semiconductors. These researches have the potential of bringing photonics up to a higher level, such that medical care can be provided with more advanced optical imaging equipment and less expensive diagnostic methods. Rmcplant (aka. Rmcplant is an advanced material. With over 12 years’ experience, Rmcplant is an established global supplier of chemical materials and manufacturer. High purity and fine particles are the hallmarks of our [( Selenide-tungsten]] products. We can help you if your requirements are lower.
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Cadmium Selenide CdSe Powder CAS 1306-24-7

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About Cadmium Selenide CdSe Powder :
Cadmium selenide is an inorganic compound with the molecular formula CdSe.What is the name of CdSe? Cadmium selenide. It is a black to red-black solid and is classified as an N-type semiconductor II-VI.So far, research on the salt has focused on its nanoparticles. Cadmium selenide (CdSe) is a hexagonal modified tetrahedral semiconductor with a wurtzite structure.CdSe is a uniaxial optical semiconductor with two dielectric functions. The measurement of the reflectivity spectra of CdSe crystals under the action of polarized light shows that the electric vectors parallel to and perpendicular to the hexagonal axis are quite different.
Cadmium selenide is a solid binary compound of cadmium and selenium. It is an n-type semiconductor material that is transparent to infrared light. However, p-type doping of cadmium selenide occurs in the use of nitrogen. Wurtzite, sphalerite and rock salt are the three known forms of cadmium selenide crystals. Cadmium is a toxic heavy metal, and selenium can be toxic in large amounts. Cadmium selenide is therefore a known carcinogen in humans and requires medical attention if swallowed or if it comes into contact with the eyes and skin. Most of the current research work focuses on development control.
What is Cadmium Selenide structure? CdSe comes in three crystalline forms: hexagonal wurtzite (hexagonal), galena (cubic), and halite (cubic). The CdSe structure of sphalerite is unstable and converts to wurtzite after moderate heating. The transition starts at around 130 ° C and can be completed in a day at 700 ° C.Halite structures are only observed at high pressures. Rmcplant is a trusted global Cadmium Selenide CdSe Powder supplier. Feel free to send an inquiry about the latest price of Cadmium Selenide at any time.

Features of  Cadmium Selenide CdSe Powder:
Cadmium selenide, with a molecular formula of CdSe and a molecular weight of 191.36. It is a beige or red powder.

Specification of Cadmium Selenide CdSe Powder:

COA of CdSe
Purity99.99%
Cu≤5ppm
Ni≤5ppm
Zn≤10ppm
In≤5ppm
Ca≤5ppm
Fe≤10ppm
Cr≤3ppm
Co≤5ppm
Na≤5ppm


How is Cadmium Selenide CdSe Powder produced?
Cadmium selenide (cadmium selenide synthesis) is produced in two different ways. Bulk crystalline CdSe was prepared by high-pressure vertical Bridgman method or high-pressure vertical zone melting method
CdSe can also be produced in the form of nanoparticles. There are several methods for preparing CdSe nanoparticles: retention precipitation in solution, synthesis of structural media, pyrolysis at high temperature, ultrasonochemistry, and radiolysis
Under controlled conditions, alkyl cadmium and tri octyl phosphine selenide (TOPSE) precursors were introduced into a heated solvent, and cadmium selenide was prepared by retention precipitation in a solution
ME2Cd + TOPSE →CdSe +(by-product)
High-temperature pyrolytic synthesis is usually carried out using aerosols containing volatile mixtures of cadmium and selenium precursors. The precursor aerosol is then brought into a furnace containing inert gases such as hydrogen, nitrogen or argon. The precursor reacts in the furnace to form CdSe and several by-products.
 
Applications of Cadmium Selenide CdSe Powder:
CdSe materials are transparent to infrared (IR) light and have limited applications in photoresistors and Windows of instruments that utilize infrared light. The material also has high luminescent properties.CdSe is a component of the pigment cadmium orange.
Cadmium selenide uses are also including:
Optoelectronic devices
Laser diode
Biomedical imaging
Nanosensing
High-efficiency solar cell
Thin-film transistor

Packing & Shipping of Cadmium Selenide CdSe Powder:
We have many different kinds of packing which depend on the Cadmium Selenide CdSe Powder quantity.
Cadmium Selenide CdSe Powder  packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Cadmium Selenide CdSe Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Cadmium Selenide CdSe Powder CAS 1306-24-7插图

Cadmium Selenide Properties

Other Namescadmium(II) selenide, selanylidenecadmium, cadmium(2+) selenide,
Cadmium monoselenide, CdSe powder
CAS No.1306-24-7
Compound FormulaCdSe
Molecular Weight191.37
AppearanceGray or Brown Powder
Melting Point1268 ℃
Boiling PointN/A
Density5.81 g/cm3
Solubility in H2ON/A
Exact Mass193.81988
  
  

Cadmium Selenide Health & Safety Information

Signal WordDanger
Hazard StatementsH301-H331-H373-H410
Hazard CodesT, N
Risk Codes21-23/25-33-50/53
Safety Statements36/37-45-60-61
Transport InformationUN 2570 6.1/PG 3
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