25results about How to "Improve photoelectric conversion performance" patented technology

The invention discloses a dithiin functionalized metal organic framework photo-thermal material, a free radical metal organic framework photo-thermal material as well as a preparation method and application of the dithiin functionalized metal organic framework photo-thermal material. Tetrathio anthracene is used as a linking group to directionally connect a trinuclear iron oxide cluster into a ring, tripyridyl amine is connected with an Fe atom in the ring to enable the trinuclear iron oxide cluster to be 9-coordinate connection, and the formed MOF has good hydrophilicity and wide light absorption range; a stable frame structure is provided, and a one-dimensional pore channel structure provides a channel for water conveying; therefore, the solar energy which is very easy to obtain is converted into heat energy for water evaporation; and sulfur-containing unsaturated double bonds in the tetrathio-anthracene are used as modifiable groups, and are subjected to ring shrinkage after high-temperature annealing to form a framework with stable free radicals, so that a relatively wide absorption spectrum is shown, absorption of sunlight is facilitated, and the material is endowed with extremely high photo-thermal conversion capacity. The dithiin functionalized metal organic framework photo-thermal material can be prepared through solvothermal reaction. The preparation process is simple and easy for large-scale preparation.

The invention provides an organic fluorescent material and application thereof in preparation of a perovskite-crystalline silicon laminated solar cell, and the molecular formula of the organic fluorescent material is # imgabs0. In the preparation process of the perovskite-crystalline silicon laminated solar cell, the organic fluorescent material is added into a perovskite thin film precursor solution, and the perovskite thin film precursor solution is prepared into the perovskite thin film. According to the invention, the perovskite solution and the conversion material are prepared into a perovskite solution-conversion material compound solution, the perovskite solution-conversion material compound solution is used for coating a perovskite light absorption layer, the damage of ultraviolet light to perovskite can be avoided, the perovskite can also absorb emitted visible light and generate electricity, and the photoelectric conversion efficiency of the cell is improved; the light conversion film functional layer does not need to be additionally made, and the cell preparation process steps are simplified. In addition, the organic fluorescent material is used as an additive, crystal defects in the perovskite light absorption layer can be passivated, the quality of the perovskite thin film is improved, the service life of a carrier is prolonged, and the photoelectric conversion performance is improved.

The invention discloses a three-junction full-perovskite laminated solar cell module. The three-junction full-perovskite laminated solar cell module comprises a substrate layer and three cell units which are connected in series, according to the invention, a quadruple patterned structure of the three-junction full-perovskite laminated solar cell is constructed by etching the second hole transport layer and the functional layers below the second hole transport layer through scribing the fourth interval groove PX, so that the phenomena of short circuit and shunting of the cell are solved; and then a passivation solution, a wide bandgap semiconductor or an insulating layer reacts with the perovskite at the damaged part to form a two-dimensional structure, namely a repair type Type I heterojunction passivation layer structure, so that non-radiative recombination of carriers is reduced, and the photoelectric conversion performance of the cell is further improved.

The present invention belongs to the technical field of photoelectric functional materials and devices, and discloses a halide perovskite film with improved photoelectric conversion performance, a preparation method and an application thereof. The present invention uses europium chloride, 2-thenoyltrifluoroacetone containing rich functional groups (-CF3, thiophene) and 1,10-phenanthroline to synthesize a new rare earth complex Eu(tta) 3 Phen is added to the perovskite precursor solution, and finally the halide perovskite film of the present invention is prepared by the anti-solvent method. The prepared halide perovskite film is applied to perovskite solar cells, and its average photoelectric conversion performance is improved to 20.40%, and even exceeds 21% when in the best state. At the same time, it has better humidity stability, thermal stability and UV resistance, and has broad application prospects in future applications.

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

The invention belongs to the technical field of perovskite solar cells, and particularly relates to a two-dimensional / three-dimensional composite perovskite solar cell and a preparation method thereof. The composite perovskite solar cell comprises a transparent conductive layer, an electron transport layer, a three-dimensional perovskite layer, a two-dimensional perovskite layer, a hole transport layer and a back electrode layer which are arranged in sequence, wherein the two-dimensional perovskite layer has a rough surface. In the invention, local thickness change caused by the rough surface of the two-dimensional perovskite layer leads to adjustment of an energy band structure, and a thicker area has a narrower band gap, so that the material can absorb more long-wave light, and the light absorption performance is improved. Besides, according to the surface roughness of the two-dimensional perovskite layer, by increasing the local thickness, the motion freedom degree of current carriers is increased, the current carriers can move more freely in areas with different thicknesses, then the charge transmission and separation efficiency is improved, charge recombination is reduced, and the overall photoelectric conversion performance is improved.

The invention discloses a fluorobenzene-containing terminated polymer as well as a preparation method and application thereof. The structural formula of the fluorobenzene-containing terminated polymer is as follows: # imgabs0 #, r3 and R4 are independently selected from one of hydrogen, alkyl of a straight chain or a branched chain with the carbon atom number of 1-20, naphthenic base with the carbon atom number of 6-20, alkoxy of a straight chain or a branched chain with the carbon atom number of 1-20, alkoxy of a straight chain or a branched chain with the carbon atom number of 1-20 and aryl containing one or more aromatic rings, Ar is a fluorobenzene-containing end-capped protecting group, and n is a natural number of 10-1000. The fluorobenzene-containing terminated polymer disclosed by the invention has better terminal stacking performance, and can induce and regulate an ordered structure of an active layer, construct a continuous phase, improve hole mobility and effectively improve device performance; the introduction of the fluorobenzene terminal can obtain the active layer morphology with stable structure, crosslinkable performance and continuous space, improves the stability of the device, prolongs the service life of the device, and has a good application prospect.

The embodiments of the present application relate to a solar cell and a tandem solar cell, and the solar cell sheet includes a first conductive layer, a first carrier transport layer, a perovskite absorption layer, and a second conductive layer stacked along a first direction. The solar cell further includes a perovskite absorption layer including a bonding matrix and multiple monocrystal perovskite particles arranged in the bonding matrix, where the bonding matrix includes a first side and a second side opposite to the first side. At least some of the multiple monocrystal perovskite particles has respective first convex surfaces and respective second convex surfaces, the respective first convex surfaces protrude out of the first side and the respective second convex surfaces protrude out of the second side. The embodiments of the present application are at least beneficial for improving the stability and photoelectric conversion ability of the perovskite solar cell.

The utility model discloses a photovoltaic module installation precision control tool, and belongs to the technical field of photovoltaic installation, the photovoltaic module installation precision control tool comprises a base, an upper cover, a connecting piece and a photovoltaic panel, the connecting piece is fixedly connected to the top of the base, the connecting piece is of a cross-shaped structure, a lead screw is fixedly connected to the middle position of the top of the connecting piece, the upper cover sleeves the outer side of the lead screw, and the photovoltaic panel is fixedly connected to the top of the connecting piece. A telescopic groove is fixedly connected to the interior of one end of the connecting piece, a supporting spring is fixedly connected to the interior of the telescopic groove, a spring bolt is fixedly connected to the tail end of the supporting spring, the spring bolt is slidably connected to the interior of the telescopic groove, lock holes are formed in the two ends of the side edge of the photovoltaic panel, and the hole diameter of the lock holes is larger than the diameter of the spring bolt; by utilizing the linkage of the rolling wheel, the steel wire rope, the rotating shaft and the rotary knob, the lock tongue can be separated from the lock hole of the photovoltaic panel, so that the connecting piece can be drawn out from the gap of the photovoltaic panel, the tool only needs to be input once in a plurality of photovoltaic panel installation projects, the tool can be recycled subsequently, and the construction cost is reduced.

The invention discloses a solar cell piece, a solar cell module and a preparation method thereof, and relates to the technical field of solar cells. The composite solar cell comprises a solar cell and a photonic crystal structure layer located on the surface of the solar cell and / or in the solar cell, materials of the photonic crystal structure layer comprise a first material and a second material, and the absolute value of the refractive index difference value of the first material and the second material is larger than or equal to 0.1. The first material includes at least one of an up-conversion material, a down-conversion material, and a perovskite material. The photonic crystal structure layer is arranged on the solar cell, so that the light field distribution after sunlight is incident can be changed, the propagation path of sunlight in the solar cell is increased, and the effect of enhancing the photoelectric conversion efficiency of the solar cell is realized by utilizing light diffraction. In addition, light in a wave band with low absorption and utilization efficiency of the solar cell can be converted into light in a wave band with high absorption and utilization efficiency, and efficient absorption and utilization of sunlight in a wider wave band range by the solar cell are further enhanced. The photoelectric conversion efficiency and the quantum efficiency of the solar cell are improved through the combined action of the two aspects.

The invention discloses a solar cell adhesive film and a preparation method thereof, and relates to the technical field of adhesive film materials, the solar cell adhesive film comprises an adhesive film body and at least one photonic crystal structure layer located in the adhesive film body and / or on the surface of the adhesive film body; materials of the photonic crystal structure layer comprise a first material and a second material, the absolute value of the refractive index difference value of the first material and the second material is larger than or equal to 0.1, and the first material comprises at least one of an up-conversion material, a down-conversion material and a perovskite material. When the solar cell adhesive film provided by the invention is used as a packaging adhesive film of a solar cell, the light field distribution after sunlight incidence can be changed, the propagation path of sunlight in the solar cell is increased, and the effect of enhancing the photoelectric conversion efficiency of the solar cell is realized by utilizing light diffraction. The photonic crystal structure layer comprises at least one of an up-conversion material, a down-conversion material and a perovskite material, so that the photonic crystal structure layer can convert light in a wave band with relatively low absorption and utilization efficiency of the solar cell into light in a wave band with relatively high absorption and utilization efficiency; and the efficient absorption and utilization of sunlight in a wider wave band range by the solar cell are further enhanced. The two aspects are combined to improve the photoelectric conversion efficiency of the solar cell.

The application discloses a solar cell and a manufacturing method thereof. The solar cell comprises a plurality of cell pieces, each of which comprises a silicon wafer, a plurality of first fine grids, a plurality of second fine grids and a plurality of conductive wires. The front surface and the back surface of the silicon wafer are printed with the first fine grids and the second fine grids. On any surface of the silicon wafer, the plurality of first fine grids are arranged on the silicon wafer in a dot-like manner at intervals. The silicon wafer is provided with the second fine grids at two oppositely arranged edges. The plurality of conductive wires are arranged at intervals. Any one of the conductive wires is connected with any plurality of the first fine grids, and the two ends of any one of the conductive wires are connected with the second fine grids at the two ends of the silicon wafer. Any two of the cell pieces are stacked, and the second fine grid on the front surface of one of the silicon wafers at least partially overlaps with the second fine grid on the back surface of the other silicon wafer. The solar cell can not only reduce the manufacturing cost, but also improve the current transmission efficiency of the cell pieces.

The invention discloses a solar cell panel and a cell panel assembly, and relates to the technical field of solar cells, the solar cell panel comprises a cell chip and a light-transmitting color film, and the light-transmitting color film comprises a first light-transmitting layer and a first light-transmitting pattern layer; the side, opposite to the first light-transmitting pattern layer, of the first light-transmitting connecting layer is connected with the battery chip. The design of the solar cell panel provided by the invention not only meets aesthetic requirements, but also ensures the functionality of the solar panel, can realize diversified appearance effects, and meets the requirements of different scenes and users.

The invention discloses a preparation method and production equipment of a perovskite solar cell absorption layer. The production equipment comprises a workbench; the movable carrying device is mounted on the workbench in a sliding manner, and the movable carrying device is used for carrying and transporting a base; an inkjet printing device; the preparation method comprises the following steps of: taking formamidine tin iodide, cesium tin iodide and 6, 6-phenyl-C61-methyl butyrate as a precursor mixture, adding a solvent, and stirring to obtain a precursor solution; the method comprises the following steps: cleaning a substrate by using ultrasonic waves to remove surface stains, washing by using deionized water, and drying; coating the precursor solution obtained in the step S1 on the substrate obtained in the step S2 in an ink-jet printing manner; and S3, drying the coated substrate in the step S3 to remove moisture, and annealing to obtain the perovskite solar cell absorption layer. And the separation efficiency and the directional transmission capability of charges are improved, so that the photoelectric conversion efficiency of the perovskite solar cell is remarkably improved.

The invention provides a solar cell processing method, a solar cell and a photovoltaic module, and the processing method comprises the steps: printing silver paste to a pattern of a silver grid line corresponding to the solar cell, carrying out the drying and the pre-sintering processing at 600-700 DEG C, preparing a prefabricated silver grid line, carrying out the laser irradiation of the solar cell with the prefabricated silver grid line, and carrying out the processing of the prefabricated silver grid line. Laser irradiation is carried out on the solar cell, reverse bias voltage is applied to the solar cell while laser irradiation is carried out, a secondary sintering silver grid line with a silver dendritic crystal structure is formed, the solar cell with the secondary sintering silver grid line is placed in a chamber containing non-oxidizing gas, and the D50 of nano-silver particles in the silver dendritic crystal structure ranges from 20 nm to 100 nm. The stability of the nano-silver particles can be improved, the fracture risk of silver dendrites is reduced, the contact stability between the silver electrode contact and the silicon contact is improved, the contact resistance at the contact interface of the silver electrode contact and the silicon contact is reduced, and the photoelectric conversion performance of the solar cell is improved.

The utility model relates to the technical field of umbrellas, and discloses an umbrella with a fan, which comprises a protective umbrella cover, waterproof coating fibers, metal fibers, graphene, silver fibers, stainless steel umbrella ribs, a fixed rubber ring, a photoelectric conversion device, a fixed rod A, a fixed rod B, an umbrella handle, a convenient bridle and a limiting device, the waterproof coating fiber is fixedly connected to the lower end of the protective umbrella cover, the metal fiber is fixedly connected to the lower end of the waterproof coating fiber, the graphene is fixedly connected to the lower end of the metal fiber, the silver fiber is fixedly connected to the lower end of the graphene, and the stainless steel umbrella ribs are fixedly connected to the lower end of the protective umbrella cover. According to the umbrella with the fan, by improving the umbrella with the fan, the heat dissipation capacity of the umbrella with the fan is improved, in the actual use process of the umbrella with the fan, heat dissipation can be conducted on a user below the umbrella in summer according to needs, and the use experience of the umbrella with the fan is improved.

The invention discloses a packaging adhesive film, a perovskite solar cell, a preparation method of the perovskite solar cell and a laminated cell. The packaging adhesive film comprises a substrate material and a light conversion material, the light conversion material comprises one or more of a quantum dot material, a fluorescent dye, low-dimensional perovskite and a rare earth complex, and the mass ratio of the substrate material to the light conversion material is 100: (0.1-0.5). The packaging adhesive film can be used for preparing a perovskite solar cell, has the characteristics of high plasticity, convenience in processing, ultraviolet aging resistance, water and oxygen blocking and the like, also has high Stokes shift, and can improve the PLQY characteristic. In the use process, the perovskite solar cell is not easily damaged by ultraviolet rays, and the energy of the ultraviolet rays can be utilized for improving efficiency, improving energy conversion efficiency, and improving photoelectric conversion performance, open-circuit voltage, short-circuit current and the like.

The invention provides an electrode structure of a solar cell, a manufacturing method and the solar cell. A plurality of auxiliary grids of the electrode structure comprise a plurality of first grid lines, every two of the first grid lines intersect to form a plurality of regular polygons, each regular polygon is provided with an inner center, the vertex of each regular polygon is a first connecting point of at least two first grid lines, any two first grid lines with the same first connecting point in the regular polygons form a first included angle, and the first included angle is larger than the first included angle. The first included angle is larger than 0 degree and smaller than 180 degrees; any two second grid lines are provided with second connecting points, the projection of each second connecting point in the regular polygon is overlapped with the inner center, the first grid lines and the second grid lines are electrically insulated, the first grid lines are arranged on one side of the second grid lines, and under the condition that the first grid lines are positive grid lines, the second grid lines are negative grid lines. And when the first grid line is the negative grid line, the second grid line is the positive grid line. According to the invention, the photoelectric conversion capability of the solar cell is improved.

The invention discloses a preparation method and application of a tripod photoelectrochemical sensor based on water-stable perovskite material and circular DNA, and belongs to the application technical field of photoelectric materials. The method comprises the following steps: S1, preparing (BA)2PbI4-Pb(OH)2 perovskite nanomaterial; S2, preparing (BA)2PbI4-Pb(OH)2 photoelectrode; S3, preparing photoelectrochemical sensor: (1) taking template DNA and splint chain and adding them to Tris-HCl buffer, mixing and heating, adding T4 ligase to catalyze cyclization, then adding exonuclease I and exonuclease I buffer and exonuclease III and exonuclease III buffer, heating after incubation to obtain circular DNA, and then incubating acetamiprid aptamer with its recognition chain cDNA; (2) dropping amino-modified DNA onto the surface of the photoelectrode for incubation, and then dropping hairpin DNA for incubation. The (BA)2PbI4-Pb(OH)2 prepared by the present invention can realize the stability of perovskite in water and the effective conversion of light to electricity. The sensor prepared by using it as a photosensitive material has high sensitivity and good stability, and can realize the detection of acetamiprid.

The utility model discloses garden landscape lighting equipment which is characterized in that when the garden landscape lighting equipment is used, firstly, a worker needs to place the lighting equipment at a proper position, fixes the whole lighting equipment through a base to ensure that the lighting equipment stands stably, and uses a first positioning pin for stable installation; the lighting equipment is prevented from shaking or toppling over, the locating pins can be prevented from falling off or being damaged through the locating pin limiting pieces, the safety performance of the whole lighting system is improved, the installation and maintenance processes are simpler, more convenient and faster through cooperative use of all the components, and the installation and maintenance cost is reduced; after assembly, sunlight is converted into electric energy through the solar panel, the electric energy is transmitted to the current controller through the transmission line, the current controller is responsible for controlling current transmitted by the solar panel and charging the storage battery, and when the electric energy provided by the solar panel exceeds the requirement of the lighting mechanism, redundant electric energy can be stored in the storage battery.

The utility model relates to the technical field of new energy assemblies, and discloses a condensation structure of a solar assembly, which comprises a frame, extension frames are connected to four corners of the frame, support rods are connected to the top ends of the two extension frames at the rear, and a light capture plate is rotatably arranged at the top ends of the support rods. The bottom end of the light capturing plate is connected with a plurality of sets of light collecting units, and the periphery of the light capturing plate is connected with refraction frames. According to the utility model, through the arrangement of the refraction frame and the reflection layer, the light gathering effect of the light gathering plate can be improved, so that the refraction intensity of the light gathering unit is improved, light rays at more angles can be emitted from the front surface of the photovoltaic panel, the photoelectric conversion effect is improved, the light receiving duration of the photovoltaic panel is effectively prolonged, and the service life of the photovoltaic panel is prolonged. And through the arrangement of a gas storage tank, an electric push rod and a second piston at the lower part, the driving consumption can be reduced as much as possible by utilizing the principle that gas expands when heated.

The invention relates to an organic solar cell device which comprises a first photoactive layer and a second photoactive layer, the first photoactive layer comprises an anode buffer layer material (SAMs) with anchoring groups and a polymer donor material, and collaborative optimization is achieved through material matching of the first photoactive layer and the second photoactive layer. And the photoelectric property of the device is improved.

This invention discloses an erbium-ytterbium co-doped β-Ta₂O₅ green upconversion luminescent material and its preparation method. The luminescent material uses β-Ta₂O₅ as a matrix and dops Er₂ within it. 3+ and Yb 3+ The luminescent material has the chemical formula β-Ta₂O₅:aEr 3+ / bYb 3+ Where a:b = 1:2~15, a = 0.003~0.01. The preparation method includes steps such as raw material mixing, grinding, sintering, filtration, and drying. The erbium-ytterbium co-doped β-Ta₂O₅ green upconversion luminescent material prepared by this invention uses β-Ta₂O₅ as the matrix and co-doped with Er 3+ and Yb 3+ It exhibits higher chemical stability, lower toxicity, significantly enhanced green upconversion fluorescence intensity, and greater temperature sensitivity. These properties effectively improve the performance of NaYF4:Er 3+ / Yb 3+ The instability and safety issues inherent in phosphors make this material a promising candidate for specific applications such as photothermal sensing, and it holds the potential to replace the commercial phosphor product NaYF4:Er. 3+ / Yb 3+ .

The invention provides a light injection passivation method of a TOPCon battery, and relates to the technical field of TOPCon battery processes. The method comprises the following steps: carrying out light injection on a metalized TOPCon battery piece under normal pressure, and heating the battery piece while carrying out light injection to finish passivation; the heating treatment process sequentially comprises a first heating section, a first heat preservation section, a first cooling section, a second heating section, a second heat preservation section and a second cooling section. According to the method, the traditional one-time temperature rise is adjusted into two-time temperature rise, the whole process time is consistent with that before improvement, the injected light intensity is consistent, the productivity is not influenced, and the repairing effect on the battery substrate can be ensured. However, the step of cooling is added between the two times of heating, so that a large amount of hydrogen on the silicon nitride layer and the aluminum oxide layer of the battery piece caused by a long-time high-temperature state can be prevented from overflowing, the situations that a passivation film layer is damaged and the passivation effect is influenced are reduced, and the photoelectric conversion effect of the improved battery is obviously improved.

The present invention relates to the field of ultraviolet detectors, and in particular, provides a solar-blind ultraviolet photodetector and a preparation method and application thereof. The preparation method comprises the following steps: S1, first spin-coating a gallium oxide precursor solution on a substrate, and obtaining a gallium oxide polycrystalline film after a first heat treatment; S2, depositing a metal electrode on the surface of the gallium oxide polycrystalline film; S3, second spin-coating an indium gallium zinc oxide precursor solution on the metal electrode, and obtaining a solar-blind ultraviolet photodetector after a second heat treatment. The process of the present invention is reliable and has good repeatability, and the obtained solar-blind ultraviolet photodetector has at least the advantages of high responsiveness, high detection rate, and relatively high light-dark current.