1302 results about "Conductive paste" patented technology

The invention discloses silver-nickel conductive paste for a BC battery and a preparation method of the silver-nickel conductive paste, and belongs to the technical field of photovoltaic batteries. The silver paste comprises the following raw materials in percentage by weight: 39-69% of micron silver powder, 20-50% of modified nickel, 2-6% of glass powder, 0.1-10% of a dispersing agent, 0-1% of silicone oil and the balance of an organic carrier, the modified nickel is simple substance nickel powder subjected to modification treatment, and the modification treatment mode is surface organic modification and ball milling modification or surface inorganic modification and ball milling modification. The nickel powder is adopted to replace part of silver powder, the prepared conductive silver nickel paste is used for a BC battery, the cost is remarkably reduced, the reliability is high, and the conversion efficiency is superior to or equivalent to that of traditional all-silver electrode paste.

The invention discloses a high-solid-content single-walled carbon nanotube aqueous conductive slurry formula composition and a preparation method thereof, belonging to the technical field of conductive slurry. The raw materials include single-walled carbon nanotube powder, dispersant, dispersing aid, pH regulator and deionized water. The invention innovatively proposes to shorten the single-walled carbon nanotube powder with the aid of a three-roll grinder, grind the single-walled carbon nanotube powder, the dispersant, the dispersing aid and the like into fibers of less than 10 μm under the forward shear force of the three-roll grinder, and the van der Waals force between the shorter single-walled carbon nanotube bundles is relatively weak and easier to be opened, so that the homogenization pressure of the subsequent high-pressure microfluidizer is ≤1000 bar, and the single-walled carbon nanotubes are uniformly dispersed under a relatively low homogenization pressure. While opening the single-walled carbon nanotube bundles, the problem of damage to the length size of the carbon nanotubes under a higher homogenization pressure is avoided, thereby ensuring the conductivity of the high-solid-content single-walled carbon nanotube aqueous conductive slurry formula composition.

The invention provides conductive paste, a solar cell, a preparation method of the solar cell and a photovoltaic module. The conductive paste comprises the following components in parts by weight: 70-85 parts of silver powder, 3-8 parts of glass powder, 0.1-2 parts of an additive and 12-25 parts of an organic carrier, wherein the silver powder comprises spherical silver powder and flaky silver powder; the glass powder is prepared from the following components in parts by weight: 65 to 75 parts of Bi2O3, 18 to 25 parts of TeO2 and 8 to 12 parts of V2O5; the additive is a carbon material and / or conductive metal oxide nanoparticles; the organic carrier comprises an infrared absorbing material; the infrared absorption material is selected from any one or more of copper phthalocyanine, a polyaniline-carbon nanotube compound and a tungsten oxide nanowire. The conductive paste can improve the conductivity of the conductive paste and improve the efficiency of the conductive paste in a laser sintering process, so that the contact resistivity is reduced, and the photoelectric conversion efficiency of a photovoltaic solar cell is improved.

The invention provides base metal conductive paste for a photovoltaic cell and a preparation method, a use method and application thereof, and the conductive paste comprises the following components in percentage by mass: 5-60wt% of oxide coated base metal powder, 27-77wt% of silver powder, 2-5wt% of glass powder, 0.1-3wt% of an antioxidant aid and the balance of an organic carrier; wherein the base metal powder comprises one or more of copper, tungsten, tin, nickel, aluminum and alloy powder of the copper, the tungsten, the tin, the nickel, the aluminum and the alloy powder of the aluminum, and the oxide comprises one or more of silicon oxide, aluminum oxide, titanium oxide and boric oxide. The base metal powder coated with a specific type and a proper amount of oxide is selected and matched with the oxide and the glass powder which are good in compatibility, the manufacturing cost of the conductive paste and the battery can be effectively reduced, meanwhile, the conductive paste is applied to TOPCon and BC batteries, and the battery conversion efficiency can be kept equivalent to or even superior to that of traditional pure silver conductive paste.

The utility model discloses a premixing tank for carbon nano tube conductive slurry, which comprises a cooling jacket, a kettle body is arranged in the cooling jacket, a stirring support, a liquid feeding hole, a powder feeding hole and a spraying ball assembly are arranged at the upper part of the kettle body, a stirring device is arranged in the kettle body, the stirring device comprises a low-speed helical ribbon stirrer and a high-speed shearing stirrer, a stirring shaft of the high-speed shearing stirrer penetrates through a hollow shaft of the low-speed helical ribbon stirrer and is directly connected with the high-speed driving motor, and the hollow shaft of the low-speed helical ribbon stirrer is driven by the low-speed driving motor and the speed reducer. The premixing tank solves the problems of agglomeration of carbon nanotube powder, inconsistent upper and lower uniformity, material adhesion on the kettle wall, uneven overall temperature and the like in the existing mixing tank, effectively avoids uneven mixing caused by long-term adhesion of the material on the kettle wall, can scrape off the material adhered on the kettle wall when discharging the material, reduces material residues, and improves the production efficiency. And the device can be widely applied to mixing occasions of carbon nanotubes and other slurries.

The invention discloses high-crystallinity superfine nickel powder and a preparation method thereof.The generation size of nickel powder in a liquid phase is adjusted through ultrasonic waves, molten salt heat treatment is combined to obtain the high-crystallinity superfine nickel powder, and the preparation method specifically comprises the following steps that an aqueous solution in which a nickel precursor is dissolved is mixed with a reducing agent; under the action of ultrasonic waves, an alkaline solution is added for a reaction, and nickel powder particles with the adjustable particle size are prepared; and then uniformly mixing the nickel powder with combined salts in different proportions, carrying out heat treatment at different temperatures, and cleaning and separating a cooled product to finally obtain the high-crystallinity superfine nickel powder with the size of 100-200nm. The nickel powder has good size uniformity, oxidation resistance and thermal shrinkage resistance, and can be applied to various fields such as conductive paste, metal electrodes and magnetic shielding materials.

The invention belongs to the field of conductive paste preparation, and particularly discloses conductive paste containing ruthenium oxide and a preparation method of the conductive paste. The conductive paste is prepared from the following components in percentage by mass: 40 percent to 50 percent of ruthenium oxide, 3.8 percent to 5 percent of carbon nano tubes, 5 percent to 10 percent of PbO-B2O3-SiO2, 3 percent to 8 percent of ethyl cellulose, 21 percent to 28 percent of terpilenol, 9 percent to 12 percent of butyl carbitol, 0.7 percent to 1 percent of ammonium polyacrylate and 1 percent to 2 percent of dibutyl phthalate. According to the preparation method, ruthenium oxide is activated in vacuum, a mixed solvent is combined after dispersion, and a ball milling and ultrasonic dispersion synergistic process is adopted, so that the slurry is uniformly dispersed and has excellent stability. According to the invention, a ruthenium oxide-carbon nanotube-frit ternary synergistic system is constructed, and terpilenol and butyl carbitol in a specific mass ratio are taken as a mixed solvent, so that the problems of insufficient conductivity and easy agglomeration of traditional paste are effectively solved, and the method can be widely applied to manufacturing of high-precision electronic devices.

The invention discloses conductive paste, a conductive electrode, a preparation method of the conductive electrode and a crystalline silicon solar cell, and belongs to the technical field of photovoltaic cells, the conductive paste comprises glass powder, silver, nickel and an organic carrier, the glass powder comprises B2O3, corrosive oxide and non-corrosive oxide, and the nickel is added to replace part of silver, so that the usage amount of silver in the conductive paste is reduced, and the cost is reduced. In addition, the molar ratio range of the corrosive oxide and the non-corrosive oxide in the glass powder is limited to be 0.7-2.6. The first passivation layer arranged on the boron diffusion emitter is opened during high-temperature sintering, and the oxidability and the flowability of the glass powder can be balanced to inhibit or delay the formation of an oxidized nickel shell on the surface of the nickel powder, so that a laser enhanced contact post-treatment process is matched; and the photoelectric conversion efficiency of the crystalline silicon solar cell is ensured.

The invention discloses multi-solvent synergistically activated low-temperature semi-sintered copper paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The multi-solvent synergistically activated low-temperature semi-sintered copper slurry comprises the following raw material components in percentage by mass: 82-88% of conductive filler, 2-3% of a resin carrier, 4-7% of an activating solvent, 4-7% of a dispersing solvent and 2-3% of a curing agent. Through cooperation of multiple solvents, full-stage activation of the copper particles is achieved, pre-connection and sintering of the copper particles before resin is completely crosslinked and cured are promoted, densification of the overall structure is improved, the insulation barrier effect of the resin is effectively avoided, the resistivity is reduced, meanwhile, inhibition of the resin on sintering of the copper particles is solved, and the service life of the copper particles is prolonged. And good balance between conductivity and interface adhesion is realized. Through resin curing, chemical bonding between the slurry and the substrate can be enhanced, a metal bond network among copper particles is expanded, and mechanical connection stability and electrical performance are guaranteed.

The present disclosure provides a low-temperature conductive paste and a raw material composition thereof, and a heterojunction cell electrode and a manufacturing method therefor. The raw material composition comprises the following components in percentage by mass: 2%-10% of a composite resin, 2%-4% of an organic solvent, 0.2%-1% of an auxiliary agent, and 85%-94% of conductive metal powder. The resin comprises a component A and a component B. The component A comprises a polyol and a blocked isocyanate. The component B comprises a curing agent and a resin. The present disclosure further provides a low-temperature conductive paste prepared from the raw material composition, a heterojunction cell electrode manufactured from the low-temperature conductive paste, a manufacturing method for the electrode, and a heterojunction cell manufactured from the electrode. The low-temperature conductive paste and the heterojunction cell electrode provided by the present disclosure have high conductivity and weather resistance.

The present invention provides a method for preparing tin or tin alloy-coated copper powder and a low-temperature conductive paste, wherein the method comprises the following steps: S10, pretreating the surface of the copper powder to remove oxides and impurities on the copper powder surface; S20, placing the pretreated copper powder in an electroplating solution containing an organic phosphine compound additive; electroplating the copper powder using tin metal or tin alloy as an anode and copper powder as a cathode, wherein the copper powder is dispersed during the electroplating process; S30, after the electroplating is completed, filtering, washing, and drying to obtain the tin or tin alloy-coated copper powder. The addition of the organic phosphine compound in the present invention greatly improves the compactness of the tin or tin alloy coating formed on the surface of the copper powder, thereby making the prepared tin-coated copper powder or tin alloy-coated copper powder have the advantage of better oxidation resistance.

The embodiments of the present application relate to the technical field of new materials. Disclosed are a conductive paste, and a conductive film and a preparation method therefor. The conductive paste comprises a matrix resin, a composite silver powder, carbon nanotubes, and a curing agent, wherein the composite silver powder comprises a flaky silver powder having a D50 of 0.7-2.0 μm and a spherical silver powder having a D50 of 0.4-0.8 μm; the mass ratio of the composite silver powder to the matrix resin is 8:2-16:1; and the mass of the carbon nanotubes is 0.01-0.1% of the mass of the matrix resin, and the mass of the curing agent is 0.1-0.5% of the mass of the matrix resin. In the embodiments, the conductive paste has a multi-scale composite network structure after being cured, and therefore the conductive paste can respond to deformation in time and prevent crack propagation, has improved bending and tensile resistance, and still maintains good electrical properties while responding to deformation. Therefore, the conductive film prepared by using the conductive paste has good bending and tensile resistance, and still maintains good electrical properties while responding to deformation.

The invention discloses a conductive paste, a metallized substrate and a metallization process for manufacturing the metallized substrate, the conductive paste comprises metal particles, the particle size of the metal particles is 0.1-10 [mu] m, and the mass ratio of the metal particles is 80-98%; in the metallization process, a copper layer is arranged on the hole wall of a through hole or a blind hole of a substrate, then conductive slurry is filled in the hole with the copper layer, heating sintering treatment is carried out, and after heating sintering is carried out in an inert gas atmosphere at the temperature of less than or equal to 300 DEG C, metal particles can be fused to form a connection structure or a eutectic structure. A reinforcing layer can be formed between the nano metal particles and the copper layer, and the reinforcing layer is a metal bonding layer or an intermetallic compound layer. The metallization mode is suitable for a through hole or a blind hole of a glass / silicon / ceramic substrate with a high aspect ratio and a micro aperture, and the technical problems that complete filling is difficult to achieve and filling defects exist in an existing electroplating process, the electrical resistivity of conductive paste is high, and the interface bonding force is insufficient can be solved.

The invention relates to a conductive paste for a multiphase alloying photovoltaic cell, a preparation method and application thereof, and belongs to the technical field of photovoltaic device manufacturing, and the conductive paste comprises the following components by mass: 25-35% of silver-coated copper powder, 10-20% of silver-coated copper powder, 10-20% of copper powder, and 10-20% of copper powder. 45%-55% of composite tin alloy powder; 10%-20% of an organic carrier; the composite tin alloy powder is composed of at least two kinds of tin alloy powder with different melting points; in the sintering and curing process of the conductive paste, metallurgical bonding is formed between the silver-coated copper powder through gradient melting of the tin alloy powder with the different melting points. Silver-coated copper powder is adopted to replace pure silver to serve as a conductive main framework, and a large amount of tin alloy is combined to serve as a connecting base body. The low-cost advantage of the copper core and the excellent conductivity of the silver shell are utilized, so that the cost of the paste is greatly reduced, and meanwhile, the excellent electrical property is ensured.

The present invention provides a conductive paste of oligomeric walled nanotubes composite graphene and a preparation method thereof, comprising raw materials in the following mass ratios: 1-4% of oligomeric walled carbon nanotubes, 0.1-0.5% of graphite, 0.5-2% of a dispersion aid, 0.5-1% of a viscosity reducer, 0.1-0.5% of a conductive aid, and the balance being NMP; the dispersion aid includes a polyvinylpyrrolidone with a small molecular weight, a polyvinylpyrrolidone with a large molecular weight, and a polyaniline composite material. By adding graphene, the present invention makes use of the softer characteristics of graphene to enable the oligomeric walled carbon nanotubes to fit more closely with the cathode active material and have a wider contact area, thereby improving the conductivity of the material and the cycle performance, rate performance, etc. of the battery.

The invention relates to the technical field of lithium ion batteries, in particular to a system and method for detecting the conductivity of lithium ion battery conductive paste, comprising a detection bin, conductive paste spraying mechanisms are fixedly connected to the left and right sides of the bottom of the inner wall of the detection bin, and a detection mechanism is fixedly connected to the bottoms of the inner sides of the two conductive paste spraying mechanisms. By arranging the detection mechanism and the conductive slurry spraying mechanism, efficient and accurate detection of the conductivity of the conductive slurry of the lithium ion battery is realized, uniform spraying and accurate detection of the conductive slurry are realized through fine mechanical structure design, and meanwhile, the conductivity of the conductive slurry is accurately detected through detailed detection method steps. The standard and accuracy of the detection process are ensured, the stability and reliability of the conductive slurry in different working environments are further evaluated through conductivity performance at different temperatures, and in addition, the system also has the characteristics of high automation and intelligence.

The utility model discloses a carbon nanotube conductive paste dispersing and shearing device which comprises a base and a stirring barrel, an L-shaped mounting frame is mounted on the top of the base and located on one side of the stirring barrel, a rotating shaft is rotatably connected to the bottom side of the top of the mounting frame, and a connecting plate is fixedly connected to the bottom of the rotating shaft. A connecting rod is fixedly connected to the bottom side of the top of the mounting frame and located in the rotating shaft, the connecting rod penetrates through the rotating shaft and the connecting plate, a first fixing rod is fixedly connected to the bottom of the connecting rod, and a plurality of heaters and coolers are symmetrically and fixedly connected to the outer side of the first fixing rod at equal intervals and are vertically arranged at intervals. By means of the structure, the rotating stirring rods generate strong shearing force and impact force on slurry, physical dispersion of the slurry is achieved, in the stirring process, the heater and the cooler arranged in the middle can conduct heat exchange with the flowing slurry more effectively, uniform distribution of the temperature of the slurry is facilitated, and the production efficiency and the product quality are improved.

The invention relates to a method for preparing a grid line of a battery piece, which is characterized in that a layer of polymer solution capable of flowing and extending is coated on a mold, and the surface of the mold is provided with a convex structure completely corresponding to a pattern of the grid line of the battery piece. After the polymer solution is cured, a coating with a groove structure is formed, and the grooves are filled with conductive paste. And then, transferring the polymer coating coated with the conductive slurry to the upper surface and the lower surface of the battery piece by adopting a transfer printing technology, and realizing accurate transfer printing of the grid line by accurately regulating and controlling transfer printing parameters. A photocuring technology can be introduced in the transfer printing process, and the conductive slurry is rapidly cured through ultraviolet irradiation. A high-precision mold is adopted to ensure the precision of the size and the shape of the grid line, the functional requirements of different grid line areas are met through formula adjustment and a step-by-step coating technology, the traditional preparation process is simplified, the production efficiency is improved, the production cost is reduced, the electrode structure is optimized, and the production cost is reduced. And the current collection efficiency and the overall performance of the photovoltaic cell are improved.

The invention discloses low-temperature curing silver-coated copper composite slurry and a preparation method thereof. The conductive adhesive comprises the following raw material components in percentage by weight: 60-80% of conductive phase, 2-2.8% of adhesive, 5-10% of resin and 3-8% of additive, and 20%-30% of a solvent. Wherein the conductive phase is formed by compounding spherical silver-coated copper powder and flaky silver powder, and the silver content is reduced and the sheet resistance of the silver-coated copper composite conductive paste is below 25m omega / square through a copper matrix surface silver plating process. A step-by-step mixing technology is adopted in the preparation process, resin and a solvent are dispersed at a high speed at 60 DEG C, then conductive powder is introduced to avoid agglomeration, and a uniform and compact conductive network is finally formed after grinding. After being cured at the low temperature of 130-180 DEG C, the paste has excellent adhesive force and durability, can be applied to the fields of heterojunction solar cells, flexible circuits and the like, and remarkably improves the photoelectric conversion efficiency and the processing adaptability.

The invention discloses composite graphene conductive paste for a battery, and relates to the technical field of conductive materials, and the composite graphene conductive paste comprises the following raw materials in parts by weight: 1-10 parts of graphene, 1-8 parts of carbon nanotubes, 0.5-1 part of a dispersant, 0.5-2 parts of a stabilizer, 85-90 parts of a solvent, 0.5-1 part of a silane coupling agent KH-550, 1-3 parts of a modified surfactant, and 0.5-1 part of an adhesive. The molecular structure of the modified surfactant contains a nitrogen element, a bromine element and an abietic acid group, so that the performance of the composite graphene conductive paste is improved together, and the application in the field of batteries is met; the invention also discloses a preparation method of the composite graphene conductive paste for the battery. The composite graphene conductive paste for the battery provided by the invention has excellent conductivity, dispersibility, cohesiveness and stability, and meets market requirements.

The invention discloses conductive paste, a preparation method thereof and a radio frequency identification tag. The conductive paste comprises the following raw materials in parts by mass: 30-40 parts of spherical silver powder, 3-6 parts of carbon nanotubes, 20-30 parts of a resin adhesive, 40-50 parts of a diluent and 2-4 parts of a dispersant, the resin adhesive comprises polyurethane resin and an organosilicone modified acrylate monomer in a mass ratio of (8-9): (1-2), and the organosilicone modified acrylate monomer is obtained by hydrosilylation of a hydroxyl acrylate monomer and a hydrogen-containing silane compound in a molar ratio of (1.0-1.1): 1. According to the invention, the contradiction between the conductive performance and fluidity and the product flexibility of the conductive paste can be effectively solved, and the RFID product with high conductivity, printing quality and mechanical flexibility can be prepared.

The invention discloses a carbon nanotube conductive slurry dispersion uniformity on-line test device, which comprises a tank body, a first electrode and a second electrode, the first electrode and the second electrode are fixedly installed in the tank body, the top of the tank body is detachably provided with a tank cover, the upper part of the tank cover is fixedly provided with a motor through a motor seat, and the motor is fixedly provided with a motor shaft. The output end of the motor is connected with a stirring mechanism through a coupler; the stirring mechanism comprises a stirring rod and a stirring blade, the stirring rod is connected with the output end of the motor through a coupler, the stirring blade is fixedly connected with the side part of the stirring rod, the included angle between one end of the stirring blade and the horizontal plane is 20-25 degrees, and the included angle between the other end of the stirring blade and the horizontal plane is 7-10 degrees; and a movable part is rotationally mounted on the side wall of the stirring blade and can stir the conductive slurry in the tank body. According to the invention, the uniformity of slurry dispersion can be effectively improved, and the accuracy of a test result can be ensured during testing.

The invention relates to an electric contact conducting element based on gallium-based liquid metal and a preparation method of the electric contact conducting element. The electrical contact conductive element of the present invention comprises a substrate and a conductive paste coating comprising a gallium-based liquid metal and a conductive lubricant. The current-carrying friction performance of the electric contact conductive element is remarkably improved, the preparation method is simple, practicability is high, universality is high, and the electric contact conductive element plays an important role in improving the current transmission capacity of an electric contact interface.

The invention discloses conductive paste, a crystalline silicon solar cell and a preparation method of the crystalline silicon solar cell, and belongs to the technical field of photovoltaic cells. The conductive paste comprises glass powder which accounts for 1.5 wt%-6 wt% of total solids in the conductive paste; an organic carrier accounting for 9 wt% to 15 wt% of total solids in the conductive paste; a first conductive metal, which accounts for 70 wt% to 88 wt% of total solids in the conductive paste; a second conductive metal which accounts for 1 wt% to 10 wt% of the total solid content in the conductive paste; wherein the specific surface area of the second conductive metal is larger than 0.5 m < 2 > / g and smaller than 1.8 m < 2 > / g, and the second conductive metal is selected from nickel or nickel alloy. The nickel or the nickel alloy with the specific surface area is adopted to replace part of silver, the influence on the density of a sintered silver structure and the conductivity of a silver / nickel electrode can be reduced, the photoelectric conversion efficiency of the solar cell can be maintained by adding the nickel powder, and the preparation cost of the solar cell can be reduced by reducing the use amount of the silver.

The invention provides a preparation method and application of graphene in-situ growth CNT composite conductive slurry. The preparation method comprises the following steps: adding a sodium hydroxide solution into a graphene oxide composite salt solution for reaction, and performing suction filtration after the reaction is completed to obtain a graphene oxide composite catalyst; repeatedly cleaning with deionized water, drying, firing at high temperature, and crushing to obtain a catalyst; the preparation method comprises the following steps: putting a catalyst into a CVD (Chemical Vapor Deposition) tubular furnace, carrying out high-temperature reaction under the protection of inert gas in the whole process, sequentially introducing reducing gas and carbon source gas to obtain coarse carbon nanotube powder, and then carrying out high-temperature oxidation purification in air to obtain high-purity CNT powder; the preparation method comprises the following steps: fully dissolving a dispersant in a solvent, adding high-purity CNT powder, stirring, and carrying out high-pressure homogeneous dispersion. The graphene oxide is selected as a carrier of the carbon nanotube catalyst, so that the activity of the catalyst and the growth multiple of the carbon nanotube are improved, and the carbon nanotube powder with good conductivity is prepared on the surface of the graphene.

The invention discloses conductive paste for a BC battery and a preparation method of the conductive paste, and relates to the technical field of photovoltaic battery manufacturing, and the conductive paste is prepared from the following raw materials in parts by weight: 45-65 parts of Cu-coated Ag powder, 3-8 parts of gradient functional glass powder, 5-8 parts of a synergist, 30-40 parts of an organic carrier and 2-4 parts of a dispersant. The gradient functional glass powder is composed of an inner layer high corrosion phase PbO-B2O3-ZnO system and an outer layer slow release phase SiO2-Al2O3-ZrO2 system, and the mass ratio of the inner layer to the outer layer is 3: 1. The conductive paste for the BC battery is small in contact resistance, low in single-chip consumption, good in windowing effect and high in conversion efficiency when being applied to the BC battery.

The invention discloses high-conductivity low-temperature sintering composite copper paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The composite copper paste consists of the following components in percentage by mass: 70-90% of a conductive phase, 2-10% of a binding phase and the balance of an organic carrier. Wherein the conductive phase comprises cuprous hydride modified copper powder and a copper complex; the copper complex is formed by a copper compound and an organic ligand through a coordination reaction. The copper paste can be sintered to form an electrode or a circuit in a nitrogen atmosphere at a temperature of less than or equal to 300 DEG C, and has the advantages of low resistivity, good oxidation resistance, strong adhesion and the like, and the cost of the copper paste is obviously lower than that of silver paste. The invention also provides a preparation method of the composite copper paste and an application of the composite copper paste in preparation of an electronic component electrode or a conductive circuit.

To provide a laminated substrate capable of ensuring a long-term reliability by preventing stress from being applied to a conductive paste for electrical connection when the laminated substrate is manufactured by laminating a plurality of multilayer substrates.SOLUTION: In a laminated substrate 100 formed by laminating a plurality of multilayer substrates 10, in each multilayer substrate 10, a through hole 30 penetrating through each multilayer substrate 10 and having an inner wall surface plated and filled with a resin 32 therein, and bonding lands 34 electrically connected to the through hole 30 are formed on an upper surface and a lower surface of the through hole 30. An insulating adhesive layer 40 and a conductive paste via 50 for electrically connecting the bonding lands 34 of the opposed multilayer substrates to each other by a conductive paste filled in a through hole 46 formed in the insulating adhesive layer 40 are provided between the multilayer substrates 10, and the conductive paste via 50 is provided at a position different from the position where the through hole 30 is formed.SELECTED DRAWING: Figure 1

The invention discloses hollow silver-coated copper particles and a preparation method and application thereof, and belongs to the technical field of conductive material preparation. Through the unique hollow silver-coated copper particle structure design and the optimized preparation method, the use amount of silver is effectively reduced, and the cost is reduced; meanwhile, the compact silver layer and the surface modification layer can achieve a synergistic effect, so that the oxidation resistance, the conductivity and the dispersity of the hollow silver-coated copper particles are remarkably improved, the hollow silver-coated copper particles have more excellent application performance, the prepared conductive paste is endowed with excellent performance, and the conductive paste is suitable for various curing modes and has good application prospects. The method has a wide application prospect in the fields of photovoltaics, flexible electronics and the like, and is suitable for large-scale production.

The present invention relates to a glass frit comprising a base metal oxide and a specific metal oxide, the specific metal oxide being at 4 lt according to the Boubye diagram; pH lt; the total amount of the specific metal oxide is 0.1 to 10 mol%, preferably 1 to 5 mol%, and more preferably 2 to 4 mol%, based on the total amount of the metal oxide in the glass powder. The invention further relates to a conductive paste containing the glass powder, and a crystalline silicon solar cell prepared by using the conductive paste. Crystalline silicon solar cells of the present invention have reduced degradation due to acetic acid exposure.