134 results about "Chalcogen" patented technology

The invention relates to the technical field of luminescent materials, and discloses a preparation method and application of a transition metal and chalcogen ion doped metal halide high-efficiency wide-spectrum luminescent material, the chemical formula of the transition metal and chalcogen ion doped metal halide is Cs2Sn1-x-yCl6: x% Te < 4 + >, yMo < 4 + >, the ultra-wideband fluorescent powder converted light emitting diode (LED) covers the range from visible light (VIS) to near infrared light (NIR), and shows remarkable potential in practical application. According to the invention, ultra-wide spectrum emission from 400 nm to 1400 nm is realized in Mo < 4 + >-Te < 4 + > co-doped Cs2SnCl6, and the photoluminescence quantum yield of 95.3% is achieved, the excellent performance is realized through efficient energy transfer from Te < 4 + > to Mo < 4 + > and passivation synergistic effect of vacancy defects, and the performance can be verified through theoretical calculation and spectral research; finally, the ultra-wideband fluorescent powder conversion LED based on the Mo < 4 + > and Te < 4 + > co-doped Cs2SnCl6 is successfully prepared and is applied to the fields of blood gas analysis and night vision imaging.

The invention discloses a preparation method and application of chalcogenide doped graphdiyne, chalcogenide is implanted into a chalcogenide cavity in a simple thermal driving mode by using a chalcogenide cavity formed in para-nitrogen substituted graphdiyne as an anchoring site, so that the chalcogenide is distributed in a lattice shape, and a high-load monatomic graphdiyne material is obtained. The nano-enzyme sensor is constructed by utilizing the activity of peroxidase-like enhanced by the chalcogenide doped graphdiyne to detect bisphenol and thiosulfate ions, and powerful support is provided for monitoring of food safety and environmental safety.

A quantum dots light emitting diode is provided. The quantum dots light emitting diode includes a first electrode layer; an electron transport layer on the first electrode layer; and a quantum dots layer on a side of the electron transport layer away from the first electrode layer. The electron transport layer includes a gradient alloy composite sub-layer including an electron transport oxide material and an electron transport non-oxide chalcogen-containing material. The non-oxide chalcogen is selected from a group consisting of sulfide ion, selenium ion, and tellurium ion. The electron transport non-oxide chalcogen-containing material has a gradient distribution such that a content of the electron transport non-oxide chalcogen-containing material decreases along a direction from the quantum dots layer to the first electrode layer.

Described herein is a chalcogen-halide solid electrolyte material represented by the following chemical formula: LiAxEyGz, or NaAxEyGz. In embodiments, A denotes one or more elements selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), Lanthanum (La), cerium (Ce), samarium (Sm), and boron (B). In embodiments, E denotes one or more chalcogen elements. In embodiments, G denotes one or more halide elements. In embodiments, the following mathematical formula is satisfied: 0<x<10, 0<y<10, z=nx−2y+1, wherein n=3 when A denotes at least one element selected from the group consisting of La, Ce, Sm, and B, and n=2 when A denotes at least one element selected from the group consisting of Mg, Ca, Sr, and Ba. In embodiments, A is a single element selected from the group consisting of Mg, Ca, Sr, Ba, La, Ce, Sm, or B.

A grease composition that includes at least an oil-based medium, a thickener, and a fullerene-like nano-structure. The fullerene-like nano-structure includes a plurality of layers each comprised of a metal chalcogenide composition has a molecular formula of MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof.

The present invention relates to a method for obtaining an n-type doped metal chalcogenide quantum dot solid film, the method comprising: forming a metal chalcogenide quantum dot solid film; performing an n-type doping process on a plurality of metal chalcogenide quantum dots of the metal chalcogenide quantum dot solid film to make them exhibit intraband absorption, the process including partially replacing chalcogen element atoms with halogen atoms in the plurality of metal chalcogenide quantum dots, and disposing a substance on the plurality of metal chalcogenide quantum dots to avoid oxygen p-type doping of the metal chalcogenide quantum dots. The present invention also relates to an optoelectronic device, the optoelectronic device comprising: an n-type doped metal chalcogenide quantum dot solid film (A) obtained according to the method; and a first electrode (E1) and a second electrode (E2) physically contacting two corresponding spaced-apart regions of the film (A).

The application provides an inverse perovskite material, a preparation method thereof, a positive electrode material and a sodium ion battery, and belongs to the technical field of electrode materials. The inverse perovskite material has an inverse perovskite structure phase, and a chemical expression formula of the inverse perovskite material is Na x Li y TM z Ch m O n ; wherein 1.5 >= x >= 0.4, 1.6 >= y >= 0.5, 0.8 <= z <= 1.2, 0.8 <= m <= 1.2, and 0.8 <= n <= 1.2; TM is selected from transition metal elements, and Ch is selected from chalcogen elements. The application can improve the first circle discharge specific capacity and the cycle performance of a sodium ion battery prepared by using the inverse perovskite material as a positive electrode material by selecting Na elements, Li elements, transition metal elements, chalcogen elements and oxygen elements and regulating the ratio of the elements.

The application belongs to the technical field of chemical synthetic materials, and relates to an alkali metal ion intercalated transition metal chalcogenide compound as well as a preparation method and application thereof. x M m X n wherein A is one or more of alkali metal elements, and 0 < x < 1; M is one or more of transition metal elements, and m is 1-2; X is one or more of chalcogen elements, and n is 1-3; and the alkali metal ion intercalated transition metal chalcogenide compound is obtained by mixing and reacting an intercalation host transition metal chalcogenide compound, an intercalation guest alkali metal element-containing compound and an auxiliary metal intercalation agent.

The present invention belongs to the field of nanomaterial technology, and provides a bimetallic chalcogenide composite material, and a preparation method and application thereof. The composite material of the present invention includes a two-dimensional layered carrier, and a first metal chalcogenide and a second metal chalcogenide loaded on the two-dimensional layered carrier; the two-dimensional layered carrier is a MXene material, and the MXene material is an M metallized carbon material; the first metal chalcogenide is MX2; the second metal chalcogenide is AX2; wherein M is a first metal, A is a second metal, and X is a chalcogen element. The present invention uses a two-dimensional layered carrier as a carrier to load the bimetallic chalcogenide, which can make the structure of the bimetallic chalcogenide complete; and the two-dimensional layered carrier can form a stable heterogeneous interface with the bimetallic chalcogenide, which is beneficial to the charge transfer between different components and the rapid storage of lithium ions, so that the composite material can be better applied to the field of lithium storage negative electrodes.

This invention provides a method for preparing two-dimensional TMDs alloys using non-metallic chalcogenides. It is a modified CVD method in which a non-metallic chalcogenide containing two chalcogen elements replaces the elemental chalcogenides as the non-metallic growth source. The ratio of the two chalcogen elements in the TMDs alloy can be changed by adjusting the weight ratio of the non-metallic growth source to the metallic growth source. Adding 40 mg of WO3 and 55, 38, 26, and 15 mg of SeS2 respectively yielded WS... 0.96 Se 0.04 WS 0.65 Se 0.35 WS 0.5 Se 0.5 WS 0.27 Se 0.73 Four types of TMD alloy single crystals can be fabricated. Large-size single crystals and large-area thin films of two-dimensional TMD alloys with tunable chemical composition and uniform layer number can be prepared. This provides more options for optoelectronic devices with specific spectral responses, field-effect transistors, and flexible electronic devices.

A method for adjusting the wide spectrum detection of transition metal chalcogenides by using vacancy defects belongs to the field of two-dimensional materials. In the method, transition metal oxides are used as metal sources, two different chalcogen elements are used as sulfur sources, and a single-layer ternary transition metal chalcogen compound with uniform element distribution is grown by using a chemical vapor deposition method. By using the difference in the stability of the chemical bonds between alloy elements, the unstable chemical bonds are broken by hydrogen-assisted annealing, and the generated chalcogen element vacancy defects are uniformly distributed in the ternary transition metal chalcogen compound. The chalcogen element vacancy defects introduce defect energy levels between the conduction band and the valence band of the transition metal chalcogen compound, generate new photoluminescence peaks, and widen the spectrum detection range. The experimental method is simple in process, good in repeatability, can accurately control the type, distribution and number of defects, and is suitable for large-scale production.

The application relates to a surface enhanced Raman scattering (SERS) substrate, a preparation method and application thereof, and belongs to the technical field of Raman spectrum detection. The substrate comprises, from bottom to top, a substrate layer, a distributed Bragg reflector, a chalcogen phase change material functional layer and a nanoscale metal structure layer. The distributed Bragg reflector is composed of a periodic structure stack of medium materials with different refractive indexes. The distributed Bragg reflector is coupled with the nanoscale metal structure layer to excite a Tamm state. The chalcogen phase change material functional layer can realize reversible regulation of amorphous state and crystalline state under external light excitation, changes the Tamm state resonance wavelength to regulate the SERS enhancement effect. The application realizes high-sensitivity detection through double enhancement of the Tamm state and localized surface plasmon resonance, has the characteristics of non-volatility, reconfigurability, high reproducibility and design flexibility, is convenient to operate, stable in performance, and is suitable for fields of chemical biological sensing, laboratory chip systems and optical encryption.

A method of forming a material film includes providing a non-photosensitive mask on a substrate to expose a partial region of the substrate, forming a material film on the partial region of the substrate using a sputtering process, removing the non-photosensitive mask, and heat-treating the substrate and the material film from which the non-photosensitive mask is removed under a first gas atmosphere. The material film includes a transition metal and a chalcogen element. The sputtering process may include an RF magnetron sputtering process. The heat treatment may be performed at a higher temperature than a temperature of the forming the material film.

The disclosure relates to a method of producing an intrinsic or doped transition metal dichalcogenide film comprising: providing a substrate in a deposition chamber; providing a reducing environment and an excess of chalcogen in the deposition chamber; and forming the intrinsic or doped transition metal dichalcogenide film on a surface of the substrate. The transition metal may be Mo or W, and the chalcogen may be S, Se, or Te. The reducing environment may be a hydrogen rich environment.

The invention discloses a method for maskless growth of a transition metal chalcogenide array. The method comprises the following steps: dissolving transition metal salt and alkali in water to form a precursor solution; hydrophobic modification is carried out on a substrate through OTS, and then a hydrophilic array is formed through etching of a laser marking machine; spin-coating the precursor solution on a substrate to realize region limited distribution of a precursor; placing the precursor in a tubular furnace constant-temperature area, placing chalcogenide powder in the gas inlet end of the tubular furnace, vacuumizing the tubular furnace, introducing protective gas, starting heating, sublimating the chalcogenide powder, enabling the chalcogenide powder to enter the tubular furnace constant-temperature area, and carrying out reaction annealing on the chalcogenide powder and the precursor in the hydrophilic array area to obtain the transition metal chalcogenide array. According to the method, a maskless growth method is adopted, oriented growth of the TMDs array is achieved by regulating and controlling the hydrophilic and hydrophobic properties of the surface of the substrate and the synergistic effect of CVD parameters, the defects in the prior art can be effectively overcome, and the method is high in crystallinity, few in defect, high in position control precision, high in device compatibility, simple and convenient in process and low in cost.

The present invention provides a curable composition having excellent storage stability and excellent reactivity after storage, a cured product obtained by using the same, and a method for producing the cured product. A curable composition contains 0.1 part by mass to 10.0 parts by mass of a compound (A) having a structure represented by the following general formula (I) and 0.01 part by mass to 10.0 parts by mass of a base (B) with respect to 100 parts by mass of a curable compound. (In the general formula (I), X represents a chalcogen atom, and R 1 and R 2 each independently represents any one of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group. R 3 and R 4 each independently represents a hydrogen atom, any one of an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, and an aralkyl group.)#imgabs0#

The present disclosure discloses a luminescent N-heterocyclic chalcogenone complex having light-emitting properties and exhibiting air stability. The complex emits green emission at a wavelength in the range of 520 – 550 nm. The present disclosure also reveals a process for preparing the N-heterocyclic chalcogenone with ease of bulk synthesis and short reaction time. Ref. Figure 1

The invention discloses a high-strength anti-corrosion material, application and a product preparation method, and relates to the technical field of anti-corrosion materials, the high-strength anti-corrosion material is a Mn + 1AXn phase, M site is a front transition group metal element or a rare earth element, A site is a main group element or a rear transition group metal element, X site is any one of carbon, nitrogen, boron and chalcogen elements, and n is 1-3. The high-strength anti-corrosion material is applied to preparation of impellers and pump shells. According to the preparation method of the high-strength anti-corrosion product, the high-strength anti-corrosion material is used as a raw material, and the product is prepared through a 3D printing preparation technology. The technical problem that in the prior art, a stainless steel material is poor in corrosion resistance in a high-temperature environment is solved, and the high-strength corrosion-resistant material and the method for preparing the product through the material are provided.

A photoelectric conversion element (10) has a photoelectric conversion layer (26) containing a chalcogen compound semiconductor. When the thickness at a point corresponding to 1 / 4 of the thickness of the photoelectric conversion layer (26) from one interface of the photoelectric conversion layer (26) in the thickness direction is defined as a first depth (D1) and the thickness at a point corresponding to 3 / 4 of the thickness of the photoelectric conversion layer (26) from the interface is defined as a third depth (D3), the content ratio of one element among alkali metal elements in the photoelectric conversion layer (26) at the first depth (D1) is 2.5 times or more than the content ratio of said element at the third depth (D3).

Methods for depositing group 5 chalcogenides on a substrate are disclosed. The methods include cyclical deposition techniques, such as atomic layer deposition. The group 5 chalcogenides can be two-dimensional films having desirable electrical properties.

Described herein is a chalcogen-halide solid electrolyte material represented by the following chemical formula: LiA x E y G z , or NaA x E y G z . In embodiments, A denotes one or more elements selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), Lanthanum (La), cerium (Ce), samarium (Sm), and boron (B). In embodiments, E denotes one or more chalcogen elements. In embodiments, G denotes one or more halide elements. In embodiments, the following mathematical formula is satisfied: 0<x<10, 0<y<10, z=nx-2y+1, wherein n=3 when A denotes at least one element selected from the group consisting of La, Ce, Sm, and B, and n=2 when A denotes at least one element selected from the group consisting of Mg, Ca, Sr, and Ba. In embodiments, A is a single element selected from the group consisting of Mg, Ca, Sr, Ba, La, Ce, Sm, or B.

The semiconductor nanoparticles according to the present invention comprise a compound containing Ag, Au, a chalcogen element essential to Se, and a metal M as essential constituent elements. Here, the metal M is at least one of Al, Ga, In, Tl, Zn, Cd, Hg, and Cu. In the compounds constituting the semiconductor nanoparticles according to the present invention, the total content of Ag, Au, a chalcogen element necessary for Se, and a metal M is 95 mass% or more. In addition, the content of the metal M in the compound is preferably 1-50 at% (inclusive). The semiconductor nanoparticles according to the present invention can exhibit good light absorption / emission characteristics in wavelength regions such as the near-infrared region and the short-wave infrared region.

A vapor deposition system is described. The vapor deposition system includes a reaction chamber and a reactant delivery subsystem coupled with the reaction chamber. The reaction chamber is configured to retain a substrate therein. The reactant delivery subsystem includes inlets, a pre-reaction region, and outlets. The inlets receive precursors and chalcogen precursor(s). The pre-reaction region is configured to receive the precursors from a portion of the inlets and to react at least a portion of the precursors to form modified precursor(s). The modified precursor(s) are more thermally stable than metal-containing precursor(s) of the precursors used to form the modified precursor(s). The outlets are coupled with the reaction chamber and the pre-reaction region. The outlets separately provide the modified precursor(s) and the chalcogen precursor(s) to the reaction chamber. The modified precursor(s) and the chalcogen precursor(s) react and form a chalcogen film on the substrate in the reaction chamber.

An immobilized chalcogen system or body includes a mixture or combination of chalcogen and carbon. The carbon can be in the form of a carbon skeleton. The chalcogen can include oxygen, sulfur, selenium, or tellurium, or a combination of any two or more of oxygen, sulfur, selenium, and tellurium. The activation energy for chalcogen to escape the immobilized chalcogen system or body is ≥96 kJ / mole.

The application provides a metal-loaded transition metal oxide-transition metal chalcogenide composite material and a preparation method and application thereof, a transition metal chalcogenide nanoshell is wrapped on the surface of a transition metal oxide nanoparticle to form a core-shell structure, and metal microparticles are loaded on the surface of the transition metal chalcogenide nanoshell, the metal microparticles are single atoms, nanoclusters or nanocrystals. The composite material has double active sites of metal and chalcogen vacancies, and the nanoshell and the metal microparticles are closely combined at a molecular scale, so that the core-shell structure composite material has lower overpotential, smaller Tafel slope and impedance, larger surface active area and better durability when used as an electrocatalyst for electrocatalytic HER. The application solves the problem that pH restricts electrocatalytic HER of a transition metal chalcogenide, provides an atomic-level design strategy for preparing a high-efficiency full-pH electrocatalyst, and has important significance for promoting sustainable hydrogen production by water electrolysis.

Methods of assessing an energy storage device include providing material for a metal-chalcogen battery, washing the metal anode in a first organic solvent to form a polychalcogenide free metal anode upon which gas chromatography is performed on the polychalcogenide free metal anode to quantify the amount of M0, soaking the chalcogen cathode and the remainder of the metal- chalcogen battery in the organic solvent used to wash the metal anode to form a first solution comprising methylated polychalcogenide and any soluble chalcogen, removing any remaining chalcogen cathode from the first solution, dissolving the remaining chalcogen cathode in a second organic solvent to form a chalcogen containing second solution, performing high performance liquid chromatography -ultraviolet on the first solution and the second solution, separately, and performing battery failure analysis based thereon. The battery failure analysis may be completed using a high-performance liquid chromatography -ultraviolet spectroscopy and gas chromatography sequential characterization (HUGS) computer implemented method.

A vapor deposition system is described. The vapor deposition system includes a reaction chamber and a reactant delivery subsystem coupled with the reaction chamber. The reaction chamber is configured to retain a substrate therein. The reactant delivery subsystem includes a inlets, a pre-reaction region, and outlets. The inlets receive precursors and chalcogen precursor(s). The pre-reaction region is configured to receive the precursors from a portion of the inlets and to react at least a portion of the precursors to form modified precursor(s). The modified precursor(s) are more thermally stable than metal-containing precursor(s) of the precursors used to form the modified precursor(s). The outlets are coupled with the reaction chamber and the pre-reaction region. The outlets separately provide the modified precursor(s) and the chalcogen precursor(s) to the reaction chamber. The modified precursor(s) and the chalcogen precursor(s) react and form a chalcogen film on the substrate in the reaction chamber.

Chalcogen silane precursors having electron withdrawing groups are described. Methods for depositing one or more of a silicon nitride (SixNy) film, a silicon oxide (SiOx) film, or a silicon oxynitride (SiOxNz) on a substrate are described. The substrate is exposed to the chalcogen silane precursor and a reactant to deposit the silicon nitride (SixNy) film, the silicon oxide (SiOx) film, and / or the silicon oxynitride (SiOxNz) film. The exposures can be sequential or simultaneous. The chalcogen silane may be substantially free of halogen. The chalcogen may be selected from the group consisting of sulfur (S), selenium (Se), and tellurium (Te).