409results about "Light-sensitive devices" patented technology

The invention discloses a preparation method and application for directly growing CuCoO2 on foamed nickel, and the preparation method comprises the following steps: dissolving copper nitrate, cobalt nitrate and a mineralizer in a solvent, intensely stirring to form a suspension A, then transferring the suspension A into a high-pressure kettle, and carrying out vacuum drying to obtain CuCoO2; meanwhile, the foamed nickel is placed in a polytetrafluoroethylene flower basket and then placed in an autoclave to be heated for a hydrothermal reaction, and after the hydrothermal reaction is finished, the foamed nickel is cooled to the room temperature. According to the method, the CuCoO2 electrode with the foamed nickel substrate can be prepared in one step, compared with a method for preparing CuCoO2 powder and then transferring the CuCoO2 powder to an electrode plate, the needed time is short, operation is easy, the electrode material is uniform, and the method can be widely applied to related fields as an efficient photoelectric functional material electrode preparation method.

The embodiment of the invention relates to a composite material as well as a preparation method and application thereof, and the preparation method comprises the following steps: dissolving phenolic resin in absolute ethyl alcohol, adding hexamethylenetetramine, and uniformly mixing to obtain a first solution; dissolving a metal salt used for synthesizing a metal organic framework compound MOFs in absolute ethyl alcohol, and then adding a ligand to obtain a second solution; adding the first solution into the second solution, and carrying out heat treatment, so that the phenolic resin and hexamethylenetetramine are subjected to a sol-gel reaction and the metal salt and the ligand are subjected to a complexation reaction, and MOFs / phenolic resin wet gel is obtained; the MOFs / phenolic resin wet gel is subjected to drying treatment, and MOFs / phenolic resin aerogel is obtained; under the inert atmosphere, the MOFs / phenolic resin aerogel is placed in a rotary furnace to be subjected to carbonization treatment, and a carbonized compound is obtained; and activating the carbonized compound in the atmosphere of carbon dioxide and water vapor, and cooling in an inert atmosphere to obtain the composite material.

An arrangement includes a solar cell and a covering, wherein the covering covers the solar cell, at least on the side that is intended to be exposed to electromagnetic radiation of the sun. The covering has an electrochromic layer. The arrangement also has a control unit for controlling the electrochromic layer. The control unit is designed to control the transmittance of the electrochromic layer for electromagnetic radiation in a defined wavelength range by applying an electrical voltage to the electrochromic layer.

A photoelectric conversion element includes a first electrode section; a second electrode section; an electron-transporting section between the first electrode section and the second electrode section; a light-absorbing section; and a hole-transporting section. The hole-transporting section has a peak that reaches maximum at a Raman shift of 1575 cm−1±10 cm−1 and a peak that reaches maximum at a Raman shift of 1606 cm−1±10 cm−1 in a Raman spectrum obtained by emitting laser light having a wavelength of 532 nm; and has a peak intensity ratio A / B of 0.80 or more, the peak intensity ratio A / B being obtained from a maximum peak intensity A of the peak that reaches maximum at 1575 cm−1±10 cm−1 and a maximum peak intensity B of the peak that reaches maximum at 1606 cm−1±10 cm−1.

To provide a solar battery with a vertical conduction connection structure of which a power generation performance is improved.SOLUTION: A solar battery comprises a plurality of units. Each unit comprises: a power generation element that includes an electrode, a light absorption layer that is formed onto the electrode, and contains an electron capture agent and a color element, and an opposite electrode arranged so as to be opposite to the electrode. Also, the solar battery comprises: a vertical conductive sealing material that is formed to between a first unit and a second unit that are adjacent from the plurality of units, and conducts the electrode of the first unit and the opposite electrode of the second unit; and an external sealing material that is formed so as to surround an outer periphery of the plurality of units. The electrode is entered into the vertical conductive sealing material and the external sealing material. The opposite electrode is entered into the vertical conductive sealing material, and is not entered into the external sealing material.SELECTED DRAWING: Figure 3

To provide a dye-sensitized solar cell having further improved power generation performance.SOLUTION: A dye-sensitized solar cell includes a plurality of units including an electrode, an electron transport layer, a light absorbing layer, a counter electrode, a catalyst layer, an electrolyte, and a sealant. The electrode is formed on a first substrate. The electron transport layer is formed on the electrode. The light absorbing layer is formed on the electron transport layer, and includes an electron collector and a dye. The counter electrode is formed on a second substrate that is disposed to face the first substrate. The catalyst layer is formed on the counter electrode. The electrolyte fills a portion between the light absorbing layer and the catalyst layer. The sealant seals the electrode, the electron transport layer, the light absorbing layer, the counter electrode, the catalyst layer, and the electrolyte. The size in a current-flow direction of the unit of a power generating element constituting a region surrounded by the inner wall of the sealant of each unit is 10 mm or less.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of photovoltaics, and particularly relates to a fiber gel solar cell based on a double-helix electrode structure and a preparation method of the fiber gel solar cell. A fiber photo-anode and a fiber counter electrode are spirally arranged in parallel and placed in a flexible transparent packaging tube, and the two fiber electrodes are tightly wrapped by a polymer gel electrolyte with an axial pore channel to form a fiber gel solar cell with a double-spiral fiber electrode structure; the preparation method comprises the following steps: firstly, preparing a polymer gel framework with an axial pore channel structure on a fiber electrode through in-situ polymerization, and then introducing an electrolyte solution by utilizing an axial pore channel and fully permeating and combining the electrolyte solution with the gel framework to form the polymer gel electrolyte. According to the invention, the electrochemical performance of the fiber gel solar cell can be effectively improved, and a high-performance gel electrolyte system for the fiber solar cell is widened, so that more high-efficiency quasi-solid fiber solar cells are developed.

There is disclosed a hybrid system for generating free energy from dam-water by integrating giant turbines with piezoelectric nanogenerators and solar cells. This three-in-one generator harnesses electrical energy from solar and mechanical energy. Strategically positioned large-scale turbines convert the kinetic energy of water flow into electrical energy. Concurrently, integrated piezoelectric nanogenerators transform mechanical stress from turbine operations into electrical energy via the piezoelectric effect. These nanogenerators function as self-charging hybrid supercapacitors (SCHSCs), featuring activated carbon (AC) electrodes and PVA-KOH-BTO electrolyte. Solar panels utilizing dye-sensitized solar cells (DSSCs) with TiO2 photoanodes, molybdenum disulfide (MoS2) counter electrodes, an iodine-based electrolyte, and dyes enhance energy conversion efficiency under varying solar conditions. The system efficiently generates electricity even under low-flow conditions, minimal sunlight, or when turbines are not operating at full capacity.

The invention discloses a method for preparing a porous Ti-based electrode through laser cladding composite electrochemical dealloying, which comprises the following steps: under an atmosphere protection device, preparing a copper-titanium alloy cladding layer on a substrate by adopting a laser cladding technology, cutting the cladding layer and the substrate to obtain a precursor alloy material, and preparing a porous Ti-based electrode on the precursor alloy material, and finally, carrying out electrochemical dealloying treatment on the precursor alloy material by adopting a corrosive agent, selectively dissolving the element copper, and finally obtaining the porous Ti-based electrode material. According to the method, two surface modification technologies of laser cladding and dealloying are combined, the coating and the matrix can be metallurgically bonded through the laser cladding technology, the interface resistance is low, the structure is compact, and machining is fast; according to the electrochemical dealloying, components with relatively high activity in the coating are selectively dissolved to form a porous structure; the electrochemical dealloying processing technology is simple, the generated porous structure has high porosity and large specific surface area, a large number of catalytic active sites can be provided, meanwhile, the components, the structure and the size are easy to adjust, and therefore different requirements are met.

Described herein are non-stoichiometric perovskite ink solutions, comprising: a first composition of formula FA1-xCsxBX3; a second composition of CsX, FAX, REX3, or REX2; and one or more solvents; wherein x, X, RE, and B are as defined herein. Methods for preparing polycrystalline perovskite films using the non-stoichiometric ink solutions and the use of the films in large-size solar modules are additionally described.

The invention discloses a Ti / Al co-doped alpha-Fe2O3 photo-anode material and a preparation method thereof in the technical field of photo-anode material preparation, and the preparation method comprises the following steps: taking FeCl3. 6H2O powder, CO (NH2) 2 powder and a TiCl4 aqueous solution as raw materials, preparing a Ti-FeOOH film on FTO (Fluorine-doped Tin Oxide) through a hydrothermal reaction, then soaking the Ti-FeOOH film in an AlCl3 solution for a period of time, and annealing to obtain the Ti / Al co-doped alpha-Fe2O3 photo-anode material. The Ti / Al co-doped alpha-Fe2O3 photo-anode material provided by the invention has relatively high photoelectrochemical efficiency, and has a special nano columnar structure, so that a larger specific surface area is obtained, and the absorption range of visible light is enhanced.

Provided are a core-shell structured perovskite nanocrystalline particle light-emitting body, a method of preparing the same, and a light emitting device using the same. The core-shell structured organic-inorganic hybrid perovskite nanocrystalline particle light-emitting body or metal halide perovskite nanocrystalline particle light-emitting body is able to be dispersed in an organic solvent, and has a perovskite nanocrystal structure and a core-shell structured nanocrystalline particle structure. Therefore, in the perovskite nanocrystalline particle light-emitting body of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or an organic polymer.

To provide a dye-sensitized solar cell whose power generation performance is further improved.SOLUTION: A dye-sensitized solar cell includes an electrode, an electron transport layer, a light absorption layer, a counter electrode, a catalyst layer, an electrolyte solution, and a sealing material. The electrode is formed on a first substrate. The electron transport layer is formed on the electrode. The light absorption layer is formed on the electron transport layer and includes an electron collecting agent and a dye. The counter electrode is formed on a second substrate disposed facing the first substrate. The catalyst layer is formed on the counter electrode. The electrolyte solution fills a space between the light absorption layer and the catalyst layer. The sealing material is held between the first substrate and the second substrate and seals the electrode, the electron transport layer, the light absorption layer, the counter electrode, the catalyst layer, and the electrolyte solution. The light absorption layer has a thickness of 10 μm or less and the electron collecting agent has an average particle diameter of 16 nm or less.SELECTED DRAWING: Figure 1

The invention discloses a biological photovoltaic device based on a three-dimensional biological membrane anode and a preparation method thereof, and the preparation method comprises the following steps: carrying out mixed culture on a three-dimensional porous material and a microalgae liquid, adsorbing microalgae on the surface of the three-dimensional porous material, and growing the microalgae on the three-dimensional porous material through secreted EPS to obtain the three-dimensional biological membrane anode; electrically connecting the cathode and the three-dimensional biological membrane anode with the collector respectively, and sequentially laminating and assembling the cathode support frame, the cathode, the proton exchange membrane and the anode chamber; and fixing the three-dimensional biological membrane anode in an anode chamber, filling the anode chamber with a culture solution, and fixing an antibacterial waterproof breathable membrane at a breathable port of the anode chamber to obtain the biological photovoltaic device. Through the three-dimensional biological membrane anode, the attachment amount of microalgae is increased, and the resistance of the device is reduced; and transmembrane transfer of photoelectrons is carried out through external electricity activity of a biological membrane community to replace indirect electron transfer of exogenous toxic electrolyte, so that long-term self-sustaining operation of the device is facilitated, and the operation cost is reduced.

The invention discloses a benzotriazole light conversion material, a preparation method and application of the benzotriazole light conversion material in preparation of a solar cell packaging film. When a light conversion packaging film formed based on the benzotriazole light conversion material is attached to an organic solar cell, a dye-sensitized solar cell, a crystalline silicon solar cell, a perovskite solar cell and a laminated cell composed of the perovskite cell and the crystalline silicon cell, the ultraviolet stability of the solar cell can be improved; and the power conversion efficiency of the solar cell can be maintained.

The present invention relates to a perovskite material and a method of producing such. The method comprises the steps of: preparing a lead halide precursor ink, depositing the lead halide precursor ink onto a substrate; drying the lead halide precursor ink to form a thin film; and depositing a second solvent and a salt onto the thin film. Preparing a lead halide precursor ink comprises the steps of: introducing a lead halide into a vessel; introducing a first solvent into the vessel; contacting the lead halide with the first solvent to dissolve the lead halide; and introducing an additive comprising an amino acid or an amino acid hydrohalide into the vessel.

The application discloses a kind of gold nanoparticle loaded oxygen-doped ultrathin porous boron nitride film electrode and preparation method thereof, the preparation method includes the following steps: according to mass ratio 1:3-6:0.25-0.35, boric acid, urea, oxalic acid is prepared oxygen-doped ultrathin porous boron nitride, then gold nanoparticle is loaded oxygen-doped ultrathin porous boron nitride and coated on conductive substrate to form film electrode.The oxygen-doped ultrathin porous boron nitride film electrode loaded with gold nanoparticles prepared by the application has the advantages of large specific surface area, high electron-hole separation efficiency, fast electron transfer rate, etc., is a new type of film electrode with excellent photoelectric performance, meets the actual production demand, and has wide application prospect in photoelectrochemical field.The preparation method also has the advantages of simple process, easy operation, high preparation efficiency and low cost, and is suitable for large-scale preparation, which is beneficial to industrial application.

The invention provides a light conversion adhesive film for sunlight wavelength conversion and a preparation method thereof, the light conversion adhesive film comprises a compound of formula I and a substrate transparent to visible light, the definition of each group in the compound of formula I is described in the specification, and the mass fraction of the compound of formula I in the light conversion adhesive film is 0.001%-3%. The light conversion adhesive film can be used for a solar cell so as to enhance the efficiency and the stability of the cell.

To provide a composition for an electrolyte capable of suppressing gas generation during high-temperature storage, and to provide an electrochemical device, a secondary battery and a lithium ion secondary battery using the composition for the electrolyte.SOLUTION: The composition for an electrolytic solution contains a compound (A) represented by formula (A). (A) Rf1-O-CH2-CH2-O-R1 (wherein Rf1 is a fluoroalkyl group having 1 to 6 carbon atoms, and R1 is H, Li, Na, K or Cs); ) SELECTED DRAWING: None

The present invention discloses a bio-photovoltaic device based on a three-dimensional biofilm anode and a preparation method thereof, comprising the following steps: mixing a three-dimensional porous channel material with microalgae liquid for co-culture, so that the microalgae adsorb on the surface of the three-dimensional porous channel material and attach and grow on the three-dimensional porous channel material through the secreted EPS to obtain a three-dimensional biofilm anode; electrically connecting the cathode and the three-dimensional biofilm anode to a collector respectively, and sequentially stacking and assembling a cathode support frame, a cathode, a proton exchange membrane and an anode chamber; fixing the three-dimensional biofilm anode in the anode chamber and filling it with a culture solution, and fixing an antibacterial, waterproof and breathable membrane at the breathable port of the anode chamber to obtain the bio-photovoltaic device. The present invention improves the microalgae attachment amount through the three-dimensional biofilm anode and reduces the device resistance; the transmembrane transfer of photoelectrons is carried out through the outer electroactivity of the biofilm community to replace the indirect electron transfer mode of exogenous toxic electrolytes, which is beneficial to the long-term self-sustaining operation of the device and reduces the operation cost.

The invention discloses a dicarbazole bipyridine compound as well as a preparation method and co-sensitization application thereof, and the specific preparation process comprises the following steps: dissolving a compound as shown in a formula II and 4-pyridylboronic acid in a solvent, adding an alkaline substance and a catalyst, carrying out heating reflux reaction under stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-6; the preparation method comprises the following steps: dissolving 4-bromophenylpyridine, bis (pinacolato) diboron, PdCl2 (dppf) and potassium acetate in 1, 4-dioxane, heating and refluxing, then adding a compound as shown in a formula II, an alkaline substance aqueous solution and a catalyst, heating and refluxing to react while stirring, and after the reaction is finished, carrying out post-treatment to obtain a compound as shown in a formula DSB-7, and using the compound as a dye sensitizer to prepare the dye sensitizer. According to the preparation method disclosed by the invention, an alkyl chain is connected with dicarbazole and bipyridine, and benzothiadiazole or phenyl benzothiadiazole is introduced into carbazole, so that the dicarbazole and bipyridine compound is synthesized, and a new applicable substance is added for screening dye sensitizers.

The present invention relates to a photovoltaic device comprising a porous conductive layer 4 comprising titanium particles 5 made of titanium or an alloy thereof, a conductor device in electrical contact with the porous conductive layer, and an adhering layer 12 arranged between the porous conductive layer 4 and the conductor device 10. The adhering layer 12 comprises an adhesive 14 and first conducting particles 16 distributed in the adhesive. At least a portion of the porous conductive layer 4 comprises second conducting particles 18 distributed among the titanium particles 5. The second conducting particles 18 are made of a conducting material that substantially resists formation of an electrically insulating oxide layer on its surface upon oxidation. The titanium particles 5 and the second conducting particles 18 are sintered together so that conducting junctions 20 are formed between the titanium particles 5 and the second conducting particles 18, and the first conducting particles 16 in the adhering layer 12 is in electrical contact with the second conducting particles 18.

The present invention relates to an unsymmetrical squaraine dye of formula (I) and process for the preparation thereof. The process includes dissolving a 3-cycloalkene-1,2-dione compound in acetone and aqueous HCl to afford a semisquaraine compound. The process includes refluxing the semisquaraine compound and phenyl carboxylic acid dissolved in solvent to afford the unsymmetrical squaraine dye. Further, the present invention relates to an electronic device with an enhanced device efficiency containing a dye of formula (I) co-sensitized with a squaraine dye.

Integrated photoelectrochemical capacitor based on bismuth vanadate BiVO4 and poly(3,4-ethylenedioxythiophene) (PEDOT) is characterized in that it comprises a BiVO4 layer, preferably with a thickness ranging from 70 to 1000 nm, deposited on fluorine-doped tin oxide (FTO) conductive glass on one side, and an electrochemically deposited PEDOT layer on FTO glass on the other side, wherein both FTO glass layers are bonded together on the non-conductive side using resin, preferably epoxy, and the conductive sides are connected using tape.

The present invention relates to a solar cell (1a) comprising a stack of porous layers, a support substrate (2) for supporting the stack, and a charge conducting medium (7) penetrating through the porous layers. The stack comprises a porous light-absorbing layer (3), a porous first conductive layer (4) including conductive material for extracting photo-generated 5 electrons from the light-absorbing layer, a porous counter electrode (6) including conductive material, and a separating layer (5) made of porous electrically insulating material and arranged between the conductive layer (4) and the counter electrode (6), and where the conductive layer (4) is arranged closer to the light-absorbing layer (3) than the counter electrode (6). The support substrate (2) is porous, and the charge conducting medium (7) is penetrating through the support substrate (2).

Presented herein is a voltaic cell containing light harvesting antennae or other biologically-based electron generating structures optionally in a microbial population, an electron siphon population having electron conductive properties with individual siphons configured to accept electrons from the light harvesting antennae and transport the electrons to a current collector, an optional light directing system (e.g., a mirror), and a regulator having sensing and regulatory feedback properties for the conversion of photobiochemical energy and biochemical energy to electricity. Also presented herein is a voltaic cell having electricity-generating abilities in the absence of light. Also presented herein is the use of the voltaic cell in a solar panel.

The invention relates to a preparation method of a polyacid modified CuMoSelectrode material, and belongs to the technical field of new energy materials and photoelectric conversion. According to the preparation method, an in-situ synthesis method is adopted, and SiW11Co is doped in a CuMoS material through a one-step solvothermal preparation technology; comprising the following steps: S1, dissolving sodium molybdate and thioacetamide in ethylene glycol, then adding SiW11Co into the solution for dissolving, finally adding Cu2O, and carrying out ultrasonic treatment on the mixed solution at room temperature for 10-15 minutes to obtain a uniform dark brown suspension; s2, continuously stirring for 5 minutes, transferring the precursor suspension into a high-pressure reaction kettle, and carrying out a solvothermal process for 22-24 hours; s3, the reaction kettle is cooled to the room temperature, a final product is centrifugally washed three times with deionized water and absolute ethyl alcohol respectively, then vacuum drying is conducted, and the SiW11Co / Cu2MoS4 composite material is obtained. By introducing a proper amount of SiW11Co, a rough structure is formed on the surface of CuMoS, the number of active sites is increased, the specific surface area is increased, and the catalytic performance and the stability are far better than those of a traditional CuS counter electrode and an unmodified CuMoS counter electrode.