1825 results about "Zinc sulfide" patented technology

A heterojunction photovoltaic device for the production of electrical energy in response to the incident light includes an optically transparent substrate, a front contact formed of an transparent conductive oxide for collecting light generated charge carriers, an n-type window layer formed of cadmium sulfide or zinc sulfide, a p-type absorber structure disposed on the window layer, thereby forming a rectification junction therebetween, and a back contact comprising at least one metal layer. The p-type absorber structure has a plurality of p-type absorber layers in contiguous contact. Each absorber layer contains cadmium as a principal constituent and has a different composition and a different band gap energy. The first absorber layer is in contiguous contact with the n-type window layer. The band gap energy progressively decreases from the first absorber layer to the last absorber layer in the p-type absorber structure.

The invention discloses and proposes a high-efficiency quantum dot light emitting diode with a self-assembly polymer hole transmission layer structure. Except a positive electrode and a negative electrode, the high-efficiency quantum dot light emitting diode comprises a three-layer structure: a hole transmission layer, a quantum dot light emitting layer and an electron transmission layer, wherein one end of the quantum dot light emitting layer is connected with the hole transmission layer, the other end of the quantum dot light emitting layer is connected with the electron transmission layer, the electron transmission layer is organic nanoparticles after doped, the hole transmission layer is formed by doping a monomer, a polymer, small-molecule, inorganic oxidized metal nanoparticles or a two-dimensional nanometer material into poly(3,4- ethylenedioxythiophene monomer), a quantum dot is quantum dots of zinc sulfide, zinc selenide, cadmium sulfide, cadmium selenide, cadmium telluride, mercury sulfide, mercury selenide, mercury telluride or core-shell nanometer structured cadmium selenide-zinc sulfide, cadmium sulfide-zinc sulfide, cadmium sulfide-zinc selenide and graphene thereof and the like, and the negative electrode is glass or polyethylene terephthalate (PET) with a layer of indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) or graphene.

A film solar battery with copper, indium, gallium selenium and its parparing method relates to semiconductor film preparation and structure design of semiconductor film device. It has the characteristics as using n-ZnS as a window layer, CuIn GaSe P-semiconductor film as an absorption layer and to form ZnS/Cu (In,Ga) Sezp-n junction with ZnS, of which metal back electrode is Mo-Cu alloy. In present invention. ZnS has been used as a window layer of film solar battery to replace ZnO material so as to increase absorption spectral region of sun light at absorption layer and to avoid the application of hazardous material of Cd, furthermore Mo-Cu alloy has been used as a back electrode to replace Mo for making joint between battery and backing more solid to raise the yield of battery production.

The invention discloses a nanocrystalline quantum dot with a core-shell structure and a preparation method of the nanocrystalline quantum dot. The method comprises the following steps: preparing a nanocrystalline core; and coating zinc sulfide in situ on the surface of the nanocrystalline core to acquire the nanocrystalline quantum dot with a core-shell structure, wherein the method further comprises a step of implementing in-situ purification on the nanocrystalline quantum dot before the step of coating zinc sulfide on the surface of the nanocrystalline core and/or further comprises a step of implementing in-situ purification on the nanocrystalline quantum dot after the step of coating zinc sulfide on the surface of the nanocrystalline core. Due to the method disclosed by the invention, the fluorescence efficiency of the nanocrystalline quantum dot with the core-shell structure and the stability of the air and the temperature are increased, and the adjustable luminescence wavelength window of the acquired nanocrystalline quantum dot is 500-700nm large. The method is easy to operate, low in cost and good in repeatability; and the acquired nanocrystalline quantum dot contains no toxic heavy metals, thereby satisfying the requirements on the applications in biological marking and biological monitoring and providing excellent luminescence materials for the aspects of illumination, solar energy and displays.

The invention provides a composition having laser engraving properties, comprising a host material and an effective amount of a laser enhancing additive. The laser enhancing additive comprises a first quantity of least one of copper potassium iodide (CuKI₃) or Copper Iodide (CuI), and a second quantity at least one substance selected from the group consisting of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester. The composition can be engraved with grayscale images by an Nd:Yag laser and can be added to laminates or coatings. The composition can be used during the manufacture of many articles of manufacture, including identification documents.

The invention discloses a technology of enhanced-dispersion partial selective and bulk flotation of lead and zinc sulfide ores under low and high alkalinity. During grading of the lead and zinc sulfide ores, sodium hexametahposphate is taken as a dispersion agent and directly added into a ball mill, the ores are ground till the ores with the size of 0.074mm account for 67%-70%, lime is taken as an adjusting agent, zinc sulfate and sodium sulfite are taken as inhibitors, dithiophosphate BA and diethyldithiocarbamate are taken as collectors, and selective flotation of part of lead minerals with good floatability can be performed under low alkalinity; then xanthate and the diethyldithiocarbamate are taken as collectors, and the flotation of the lead minerals is further performed under high alkalinity; copper sulfate is added in lead flotation tailings for activation, butyl xanthate is further taken as the collector for flotation of zinc blende and part of pyrite, and zinc-sulfur separation flotation is further performed on zinc-sulfur mixed concentrate; and sulfuric acid is added in zinc flotation tailings for activation, and the xanthate is taken as the collector for flotation of the remaining pyrite. By adopting the technology, the lead-silver recovery rate can be improved, the using amount of lime and sulfuric acid can be reduced, the circulating amount of middlings can be reduced, the ore dressing cost can be reduced and the grade of the concentrate can be improved.

The invention discloses a bath smelting method and an apparatus of zinc sulfide concentrate and lead-zinc containing materials. The smelting method comprises the following steps: mixing lead-zinc-containing mixed materials according to a certain proportion and pelletizing; and then, adding the pelletized materials into an oxidation furnace having a lead-containing high-zinc-slag bath with proper ingredients and smelting points, and blowing oxygen-enriched air into the bath for generating an oxidation reaction with the pelletizing materials to generate high-concentration SO2 flue gas and lead-containing high-zinc slag, wherein the SO2 flue gas is used for preparing acid, the lead-containing high-zinc slag is continuously discharged from the oxidation furnace into a reduction furnace bath, zinc in the lead-containing high-zinc slag is reduced into zinc vapor to be collected, and the lead is reduced into metal lead and such precious metals as gold and silver in the raw materials are captured and gathered at the bottom part of the bath to be discharged. The bath smelting method disclosed by the invention has the advantages of short flow, strong raw material adaptability, low energy consumption, environment friendliness, efficient source utilization and the like and is expected to solve the current treatment difficulty of high-iron zinc sulfide concentrate, zinc oxide ores, iron and steel plant zinc dust and gold-containing iron ores and the long-term pollution problems of zinc slag of hydrometallurgy.

A solar co-generator for producing both heat energy and electricity is disclosed. A solar concentrator directs sunlight into a container lined with solar cells and filled with a thermal transfer fluid. The fluid is transparent with respect to certain wavelengths of light that may be converted to electricity by the solar cell, but is opaque with respect to longer wavelengths, particular the infrared band. The infrared portion of the sunlight heats the thermal transfer fluid, which then transfer that heat through a storage facility using a heat exchange mechanism. The thermal transfer fluid increases the efficiency of photovoltaic generation by preventing heating of the solar cells due to infrared radiation. The thermal transfer fluid may be a mixture containing barium sulfate and a suspension of zinc sulfide phosphors. A fluorescing anti-reflective coating may be applied to the solar cells to further increase efficiency.

The invention discloses the application processes and the preparation methods of a sulphide ore flotation collector as well as a diacyl bis-thiourea. The invention relates to a novel collector used for high efficiently recycling valuable sulfide minerals from metal sulphide ores; the compositions of the sulphide ore flotation collector include diacyl bis-thiourea surface active agents; the diacyl bis-thiourea compound is shown in the constitutional formula (1) or (2). The collector has strong collecting ability to copper sulphide minerals such as chalcopyrite, etc., lead sulfide minerals or zinc sulfide minerals activated by copper ions, nickel sulfide minerals as well as noble metal minerals such as gold, silver, etc., and has good selectivity to gangue sulphide minerals such as iron pyrites, pyrrhotite, etc., thereby realizing the high efficient flotation separation of the copper sulphide minerals and ferric sulfide minerals when the pH value of ore magma is below 11, reducing the used amount of lime, and improving the comprehensive recovery of copper sulphide ores.

The invention discloses a preparation method of a sodium ion battery zinc sulfide based negative electrode material. A zinc based metal organic framework acts as a precursor of the negative electrode material, and is prepared by adopting a solvent heat vulcanization method, wherein zinc sulfide nano particles are dispersed into a porous carbon framework via in-situ assembly, and the mass percentage content of zinc sulfide is 70-90%. The material as the negative electrode material of the sodium ion battery shows the characteristics of high specific capacity and good cycling stability, and the preparation method is simple and easy to operate, is environmentally friendly, and is low in cost.

Relateing to the field of antibacterial materials, the invention specifically provides an efficient and environmentally-friendly antibacterial and mildewproof inorganic composite nano-powder slurry obtained through compounding nano-magnesium oxide and other nano-inorganic materials and its preparation method. The nano-powder slurry takes nano-magnesium oxide as the main body, which is then compounded with one or more inorganic materials of nano-zinc oxide, nano-titanium oxide, nano-copper oxide, nano-cuprous oxide, nano-silver oxide, nano-zinc sulfide, nano-zirconium oxide, nano-yttrium oxide, nano-alumina, and nano-calcium oxide so as to form the nano-powder slurry, which comprises, by weight percent: 0.1-40% of nano-magnesium oxide, 0.01-40% of other inorganic materials, 0.5-12% of a polymeric dispersant, and the balance a solvent. In the method, a nano-inorganic material enters a solution composed of the polymeric dispersant and the solvent by means of high speed dispersion according to a predetermined proportion, and after ball milling, the composite nano-powder slurry can be obtained. The composite nano-powder slurry can be applied in antibacterial coatings, deodorants, textiles, paper products, plastics, rubbers, water treatment agents, ship protective agents, cosmetics and other aspects.

Embodiments of the present disclosure are directed to a phototherapy eye device. In an example, the phototherapy eye device includes a number of radioluminescent light sources and an anchor. Each radioluminescent light source includes an interior chamber coated with phosphor material, such as zinc sulfide, and containing a radioisotope material, such as gaseous tritium. The volume, shape, phosphor material, and radioisotope material are selected for emission of light at a particular wavelength and delivering a particular irradiance on the retina (when implanted in an eyeball). The wavelength is in the range of 400 to 600 nm and the irradiance is substantially 10⁹ to 10¹¹ photons per second per cm².

The machinability of water-clear zinc sulfide articles produced by chemical vapor deposition and high temperature, high isostatic pressure (HIP) treatment is enhanced by extending the time over which the article is cooled following the HIP treatment. The resulting low stress, water-clear zinc sulfide articles can be more accurately finished/machined to precise shapes, such as are required in optical applications, than was previously possible.

The invention discloses a diester-based 2-thiocyanate ester derivate applied in sulphide flotation, and the preparation method thereof. Diester-based 2-thiourea (the formula one) or diester-based 2-ethionine ester (the formula two) is applied as a novel collector for high efficiently recycling valuable sulfide minerals from metal sulphide ores by floatation. The collector has wide pH range in ore magma, thereby having strong ability to collect copper sulphide minerals such as chalcopyrite, etc., lead sulfide minerals or zinc sulfide minerals activated by copper ions, nickel sulfide minerals as well as noble metal minerals such as gold, silver, etc., and having good selectivity to gangue sulphide minerals such as iron pyrites, pyrrhotite, etc.

In a process of forming a capped crystal structure, a precursor solution is heated. The solution comprises a mixture of zinc (Zn) precursor, selenium (Se) precursor, precursor for a dopant, glutathione (GSH), and water. The dopant comprises a transition metal (M). The molar ratio of Zn:Se in the solution may be about 10:3 to about 10:5. The solution is heated for a first period sufficient to allow Zn(M)Se crystal core to form. After the first period of heating, more zinc precursor and GSH are added to the heated solution, and the solution is heated for a second period sufficient to form ZnS crystal shell on the Zn(M)Se crystal core. GSH is added in a sufficient amount to form a GSH layer around the Zn(M)Se/ZnS quantum dot.

An environmentally stable silver containing mirror having very high reflection values over a large spectral range comprises a silver containing layer disposed on a substrate, which is covered by a zinc sulfide layer. So that the sulfur being set free during the application or during the vaporization of the zinc sulfide to be applied, does not attack the silver, at least one barrier or intermediate layer is placed between the silver containing layer and the zinc sulfide layer.

The invention discloses a treatment method of zinc sulfide ore concentrates, which comprises the following steps of: (a) mixing and size-mixing the zinc sulfide ore concentrates with a sulfuric acid solution with the concentration of 120 to 170g/L, and supplying to a first pressurizing kettle; (b), subjecting the zinc sulfide ore concentrates to acid leaching to obtain a leaching solution and leaching residue; (c) supplying the leaching solution to a second pressurizing kettle, adding a neutralizing agent and an iron removal agent and simultaneously introducing pure oxygen in, and reacting for a second predetermined time in order to implement neutralization and iron removal and obtain a neutralization solution and neutralization residue; and (d) treating a second leaching solution by adopting zinc hydrometallurgy process in order to obtain metal zinc. Thus, full zinc hydrometallurgy in the true sense is accomplished by using the zinc sulfide ore concentrates as a neutralizing agent, oxygen pressure leaching, neutralization and iron removal are combined in one reaction kettle, thereby simplifying the process flow; and the reaction process is intensified through high temperature and pressurization, thereby further raising the leaching rate of zinc.