296results about "Light-sensitive devices" patented technology

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.

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.

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.

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 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 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.

This disclosure proposes a method for preparing a nitride photoelectrode with photoelectrocatalytic properties, comprising etching a nitride material with an irregular surface using an alkaline solution to obtain a nitride material with an irregular surface; and depositing a co-catalyst onto the nitride material with the irregular surface to obtain a nitride photoelectrode loaded with the co-catalyst.

Perovskite solar cells are provided that comprise a hole transport layer; an electron transport layer; and a perovskite layer between the hole transport layer and the electron transport layer, the perovskite layer comprising a perovskite and perovskite binding ligands, wherein the perovskite binding ligands each comprise an aryl group, a first perovskite binding group bound to the aryl group and bound to a first uncoordinated ion of the perovskite, a second perovskite binding group bound to the aryl group and bound to a second uncoordinated ion of the perovskite, wherein the perovskite binding ligands have a planar orientation relative to a surface of the perovskite between the first and second uncoordinated ions.

Disclosed is a compound having the following formula (1):as well as to the use of such as a dye sensitizer.Also disclosed is a dye sensitized solar cell including at least one compound of formula (I) as dye sensitizer.

A photoelectric conversion element (101) including a first electrode (2, 2a, 2b), a photoelectric conversion layer, and a second electrode (7, 7a, 7b). The photoelectric conversion layer includes a hole-transporting layer (6), and the hole-transporting layer (6) includes a tertiary amine pyridine compound and a secondary amine pyridine compound.

To provide a solar cell element in which the deterioration of a photoelectric conversion layer is suppressed without causing short-circuit due to etching.SOLUTION: A solar cell element includes a substrate 3, a first electrode 5a and a second electrode 5b formed apart from each other on the substrate 3, a photoelectric conversion layer formed in a region including the first electrode 5a and the second electrode 5b and including an electron transport layer 7a and an electron transport layer 7b, a perovskite layer 9a and a perovskite layer 9b, and a hole transport layer 11a and a hole transport layer 11b, a first back electrode 13a and a second back electrode 13b formed at positions respectively corresponding to the first electrode 5a and the second electrode 5b on the photoelectric conversion layer, and a connection electrode 15 connecting the first back electrode 13a and a part of the second electrode 5b, this part of the second electrode 5b and a part of the substrate 3 being exposed in a region where the photoelectric conversion layer does not exist and the first back electrode 13 and the second back electrode 13b do not exist.SELECTED DRAWING: Figure 8

The invention provides a preparation method of a composite material for a photo-anode, the photo-anode and a battery, the preparation method of the composite material comprises the following steps: (1) mixing citric acid, urea and ethylene glycol, stirring, heating, filtering and dialyzing, and freeze-drying a solution obtained after dialyzing to obtain carbon quantum dot powder; (2) dissolving thioacetamide and cobalt chloride pentahydrate into an aqueous solution of ethanol, adding the carbon quantum dot powder obtained in the step (1), stirring, carrying out hydrothermal treatment to obtain a precipitate, washing with absolute ethyl alcohol, and then centrifuging and drying to obtain carbon quantum dot doped cobalt sulfide powder; and (3) adding titanium dioxide and the carbon quantum dot doped cobalt sulfide powder obtained in the step (2) into an ethanol aqueous solution, stirring, carrying out hydrothermal treatment to obtain a precipitate, washing, centrifuging and drying to obtain a carbon quantum dot-cobalt sulfide-titanium dioxide composite material, namely the composite material for the photo-anode. According to the invention, higher photoelectric conversion efficiency is obtained.

An object of the present invention is to provide a composition for forming a carbon electrode capable of producing a carbon electrode suitable for production of a perovskite solar cell having more excellent photoelectric conversion efficiency, a carbon electrode capable of producing a perovskite solar cell having more excellent photoelectric conversion efficiency and a method for producing the same, a photoelectric conversion element having more excellent photoelectric conversion efficiency, a perovskite solar cell, and a method for producing a perovskite solar cell.SOLUTION: The content of the tin oxide particles is 3 to 24 mass% with respect to the content of the carbonaceous material, and the average particle size of the tin oxide particles is 2 to 200nm.SELECTED DRAWING: Figure 1

A photonic-organic electrochemical transistor (POECT), including a substrate, three terminals including a gate, a drain, and a source disposed over the substrate, wherein the space between the drain and the source forms a channel, and an electrolyte in fluid and electrical communication with the gate and the channel, wherein the channel is formed of a photoactive layer composed of donor-acceptor bulk-heterojunction interfaces.

The present invention relates to the field of photoelectrochemical conversion, and in particular to a microbial photoelectrochemical system, its construction method, and its application. The microbial photoelectrochemical system of the present invention comprises an anode chamber and a cathode chamber. The anode chamber is provided with an anode and a natural photosensitizer, and the cathode chamber is provided with a cathode and inoculated with a hybrid formed by combining microorganisms and a non-metallic photosensitizer. The anode chamber photosensitizer and cathode chamber hybrid are deposited on electrodes or discretely distributed in the electrode chamber. The microbial photoelectrochemical system of the present invention can achieve full-spectrum absorption of solar radiation and has excellent ability to generate and utilize photogenerated electrons and holes. It can be applied to fields such as water purification and low-molecular-weight hydrocarbon synthesis.

The invention discloses a W-WN heterojunction composite material based on in-situ growth on carbon and a preparation method of the W-WN heterojunction composite material, and belongs to the technical field of counter electrode materials of dye-sensitized solar cells. The preparation method comprises the following steps: stirring and mixing NH3.H2O, deionized water and ethanol to form a uniform mixed solution; (NH4) 10H2 (W2O7) 6 is dissolved in the uniform mixed solution, and the uniform mixed solution is formed through stirring; adding dopamine hydrochloride powder into the uniformly mixed solution, uniformly stirring, and carrying out hydrothermal reaction; after the hydrothermal reaction is finished, cooling to room temperature, washing the precipitate, and drying; and calcining in a tubular argon atmosphere, and then cooling to room temperature to form the W-WN heterojunction composite material growing on carbon in situ. The composite material can be used as a counter electrode material for a dye-sensitized solar cell, and has more excellent photoelectric conversion efficiency.

A photoelectric conversion element and a method for manufacturing the same are provided. [Solution] The photoelectric conversion element 1 has a first substrate 11 having optical transparency, a first electrode 12 arranged on the first substrate 11, a photoelectric conversion layer 20 containing semiconductor microparticles and dye molecules, a second electrode 32 that is the counter electrode of the first electrode 12, a second substrate 31 facing the first substrate 11 at a distance, a sealant 70 arranged between the first substrate 11 and the second substrate 31, and a carrier transport material that fills the area surrounded by the sealant 70, and is provided on the second substrate 31 side with a catalyst layer 40 and a porous layer 50 provided in contact with the catalyst layer.