Compound semiconductor material zinc sulfide
What is zinc sulfide?
The research on zinc sulfide fluorescent materials has a history of more than 130 years since it was discovered by the French chemist Sidot in 1868. From the 1920s to the 1940s, research on zinc sulfide materials attracted attention. It is a white or yellowish powder. It is converted into crystals upon ignition in H2S gas. α The variant is a colourless hexagonal crystal with a density of 3.98g/cm3 and a melting point of 1700 ℃; β The variant is a colourless cubic crystal with a density of 4.102g/cm3, which is converted to α Type. It occurs in sphalerite. Insoluble in water, easily soluble in acids. See the sun darken. Transformed into zinc sulfate after prolonged exposure to humid air. The interaction of hydrogen sulfide and zinc salt solution generally obtains it. If a small amount of Cu, Mn, and Ag is added to the crystal ZnS as an activator, it can emit fluorescence of different colours after illumination. Used as analytical reagents, paints, paints, white and opaque glass, filled with rubber and plastics, and in the preparation of fluorescent powder.
Main uses of zinc sulfide
As an important two or six-compound semiconductor, zinc sulfide nanomaterials have attracted great attention, not only because of their outstanding physical properties, such as wide band gaps, high refractive index, and high transmittance in the visible light range, but also because of their tremendous potential for applications in optical, electrical, and optoelectronic devices. Zinc sulfide has excellent fluorescence and electroluminescence functions, and nano zinc sulfide has unique photoelectric effects. It has shown many excellent properties in electricity, magnetism, optics, mechanics, and catalysis. Therefore, the research on nano zinc sulfide has attracted more attention. Especially in 1994, Bhargava reported that nano ZnS: Mn phosphors treated with surface passivation not only have an external quantum efficiency of up to 18% at high temperatures but 5 orders of magnitude have also shortened their fluorescence lifetime, and their luminescent properties have greatly changed, opening up a new way for the application of ZnS in materials. It can be used to make white pigments, glass, luminescent powder, rubber, plastic, and luminescent paint.
Synthesis method of zinc sulfide
The double decomposition method adds zinc sulfate solution to a reactor and slowly adds ammonium sulfide under stirring for a double decomposition reaction to generate zinc sulfide and ammonium sulfate. After filtering to remove the ammonium sulfate, evaporation, concentration, cooling, crystallization, and centrifugal separation are performed to obtain a finished zinc sulfide product. The reaction formula follows: adding ammonia acetate to an aqueous zinc sulfate solution and maintaining a pH between 2 and 3. Then, while heating, hydrogen sulfide is introduced to precipitate it. Adding precipitation to a 2% acetic acid aqueous solution saturated with hydrogen sulfide; After shaking, filter and dry under the condition of isolating air. To prepare a sample with good crystallinity, the residue can be heated to above 1100 ℃ in a hydrogen sulfide gas stream.
Price of zinc sulfid
Zinc sulfide particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of molybdenum Silicide. A large amount of large amount will be lower. The Price of molybdenum silicide is on our company's official website.
Zinc sulfide supplier
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