32 results about "Solar cell efficiency" patented technology

The invention provides a solar cell and a photovoltaic module, and belongs to the technical field of solar cells. The solar cell comprises a silicon substrate, the silicon substrate comprises two opposite surfaces, at least one surface is provided with a first texture structure, and the first texture structure is a non-pyramid texture structure and comprises a plurality of sunken parts which are sunken towards the interior of the silicon substrate; the convex parts are located between the adjacent concave parts, and at least part of the convex parts are provided with divergent broken line structures or curve structures in the direction from the convex parts to the concave parts. The first texture structure on the surface of the silicon substrate is beneficial to considering the light trapping effect when the silicon substrate is applied to a light receiving area, the electric contact performance of a non-light receiving area and the quality of a film layer located on the surface of the silicon substrate, so that the efficiency and the double-sided rate of the solar cell are improved.

The embodiment of the utility model provides a solar cell, a photovoltaic module and a photovoltaic system, the solar cell comprises a first surface and a second surface which are opposite to each other, and a side surface located between the first surface and the second surface, and the side surface is provided with a first area close to the first surface and a second area close to the second surface; a first tunneling oxide layer, a first doped polycrystalline silicon layer and a first antireflection layer are sequentially stacked on the first region; and a first intrinsic amorphous silicon layer, a first doped microcrystalline silicon layer and a second antireflection layer are sequentially laminated on the second region. According to the embodiment of the invention, the edge passivation can be enhanced, the efficiency of the solar cell is improved, the edge winding plating of the tunneling oxide layer and the doped polycrystalline silicon does not need to be removed, the etching process is reduced, and the production cost is reduced.

The invention belongs to the field of solar cell materials, and provides a compound shown in a formula I and capable of serving as a light conversion material, a light conversion adhesive film containing the compound shown in the formula I, a preparation method, a solar cell module and a method for enhancing efficiency and / or stability of a solar cell. The light conversion adhesive film containing the light conversion material can be used for solar cells (especially TOPCon cells and TBC cells) so as to enhance the efficiency and / or stability of the cells.

The invention belongs to the field of solar cell materials, and provides a light conversion material, application thereof, a light conversion adhesive film containing the light conversion material, a preparation method of the light conversion adhesive film, a solar cell module and a method for enhancing efficiency and / or stability of a solar cell. The light conversion material is a compound shown as a formula I, and the definition of each group in the compound shown as the formula I is described in the specification. The light conversion adhesive film containing the light conversion material can be used for a solar cell to enhance the efficiency and / or stability of the cell.

The invention provides a wide-band-gap perovskite battery and a preparation method thereof. The wide-band-gap perovskite cell comprises a perovskite absorption layer, a dielectric passivation layer and a charge transport layer which are stacked in sequence. The perovskite absorption layer is doped with an organic amine salt, the chemical formula of the organic amine salt is nM-PAHs-RNH3X, n is 1-5, M is an electron withdrawing group, PAHs is aryl, R is C1-C4 alkyl or H, and X is any one selected from F, Cl, Br and I; the material of the dielectric passivation layer comprises a Lewis basic compound. Organic amine salt doping is combined with the Lewis alkaline dielectric passivation layer, so that perovskite energy level matching is optimized, interface defects are reduced, and the efficiency of the solar cell is remarkably improved; and meanwhile, a large number of dielectric layers do not need to be arranged to realize energy level matching, and the preparation process of the wide-band-gap perovskite cell is simplified.

The invention provides a solar cell sintering method and a solar cell obtained through the solar cell sintering method, and relates to the technical field of solar cells. The sintering method of the solar cell comprises the following steps of: printing P fine grid slurry on a cell piece, and sintering for the first time; printing N fine grid slurry, and sintering for the second time; and finally printing the main grid slurry, and performing third sintering to obtain the solar cell. According to the sintering method, a step-by-step sintering mode is adopted, the contact effect of metal of the P region, the N region and the main grid region and the silicon wafer is improved, and the efficiency and the process yield of the solar cell can be effectively improved.

The invention discloses a perovskite solar cell based on hole transport layer solvent engineering and a preparation method thereof. The preparation method comprises the following steps: preparing a hole transport layer precursor solution of the perovskite solar cell by using a mixed solvent of chlorobenzene (CB), ethyl acetate (EA) and 4-tert-butylpyridine (TBP); the optimal solvent formula is obtained by regulating and controlling the solvent proportion, and the high-quality organic hole transport layer thin film is prepared by using the spin-coating method, so that the efficiency and the stability of the perovskite solar cell are greatly improved, and the high-performance perovskite solar cell is further obtained. A new thought and a new method are provided for promoting industrial production and commercial application of the perovskite solar cell.

The utility model provides a solar cell and a photovoltaic module, and the cell comprises a substrate which is provided with a front surface, a back surface and a side surface; the emitter layer is located on the front surface, and the doping type of the emitter layer is opposite to that of the substrate; the first passivation layer is located on the side, away from the substrate, of the emitter layer; the first electrode is electrically connected with the emitter layer; the tunneling dielectric layer is positioned on the back surface; the doped conductive layer is located on one side, away from the substrate, of the tunneling dielectric layer, and the doping type of the doped conductive layer is the same as that of the substrate; the second passivation layer is located on the side, away from the substrate, of the doped conductive layer; the second electrode is electrically connected with the doped conductive layer; and at least one conductive structure in contact with the emitter layer and the doped conductive layer, respectively. The conductive structure can replace a current flowing path of the battery to normally transmit most of current from the doped conductive layer to the emitter layer, the generating capacity and the power of the battery are not greatly influenced, and the problem that the battery efficiency is low when the battery generates a hot spot effect is solved.

The invention relates to a passivation solution, a perovskite solar cell, a preparation method of the perovskite solar cell, a photovoltaic module and an electric device. The passivation solution comprises a passivation material and a mixed solvent, the mixed solvent comprises a first solvent, a second solvent and a third solvent, the first solvent comprises alcohol, the second solvent comprises cyclic carbonyl, the third solvent comprises at least one of chlorobenzene, methylbenzene, acetonitrile, dichloromethane and ethyl acetate, and the boiling point of the second solvent is higher than that of the third solvent. The third solvent with a low boiling point preferentially volatilizes to help initial positioning of the passivation material, the second solvent with a high boiling point delays volatilization, and the second solvent comprises a cyclic carbonyl group and is matched with the first solvent alcohol, so that sufficient adsorption and ordered arrangement of the passivation material can be promoted, meanwhile, the second solvent is prevented from being left, and the three solvents are matched with one another. The uniformity of the formed passivation layer can be effectively improved, the interface compatibility with the perovskite light absorption layer is good, the interface potential barrier is effectively improved, the efficiency of the perovskite solar cell is improved, and the service life of the perovskite solar cell is prolonged.

Disclosed herein is a solar deck system comprising a plurality of planks configured to form a deck or patio structure, each plank including at least one recess receiving a solar cell and a transparent covering flush with the walking surface. The solar cells are electrically interconnected and operably coupled to at least one energy storage unit for collection and use of generated electrical power. Each plank further incorporates a cooling array disposed beneath the solar cell, the array comprising cooling tubing embedded in an aluminum heat sink and fluidly connected between storage tanks. Circulating fluid absorbs excess heat to maintain solar cell efficiency and longevity while capturing recoverable thermal energy. Stored thermal energy may be directed to a heat pump, while stored electrical energy may power residential or commercial loads and auxiliary components. The integrated system enables efficient, modular, and optionally off‑grid energy generation directly from a deck installation.

The present application relates to the technical field of solar cell manufacturing. Specifically, a solar cell and a manufacturing method thereof are provided. The solar cell assembly comprises a solar cell piece, the solar cell piece comprising a surface conductive layer and a current collection structure on the surface of the surface conductive layer; a polarizing structure arranged on the surface of the current collection structure and corresponding to the position of the current collection structure; the polarizing structure is adapted to deflect the incident light directly incident on the current collection structure and make the incident light enter the area between adjacent current collection structures; and an encapsulation film layer covering the surface of the surface conductive layer and encapsulating the current collection structure and the polarizing structure. The solar cell and the manufacturing method thereof can effectively solve the problem of unsatisfactory solar cell efficiency caused by the grid lines blocking the incident light.

The application belongs to the technical field of semiconductor devices, and discloses a solar cell based on a perovskite film capable of inhibiting lead leakage and a preparation method thereof. A small molecule 3-MBA is used as a bifunctional Lewis base additive to be introduced into a perovskite precursor solution to prepare a perovskite film capable of inhibiting lead leakage and a solar cell. 2+ The sulfur atom of the thiol group and the oxygen atom of the carbonyl group in the 3-MBA provide two sites Pb 2 Passivation significantly improves the bonding strength and adhesion of lead in the perovskite structure, inhibits lead leakage of the perovskite solar cell, and enhances the stability of the device. In addition, due to the strong interaction between 3-MBA and the self-assembled monolayer, the influence on the device efficiency is small while inhibiting lead leakage. Experimental results show that the efficiency of a solar cell with an active area of 1cm 2 can reach 24.1%, and can present an environmental stability of more than 1900 hours at a temperature of 22 degrees and a humidity of 45%.

This invention provides a solar cell, comprising: a substrate layer including a side surface and opposing first and second surfaces, including a first region and a second region; the first surface having an emission structure, a first passivation layer, a first plating layer, and a first electrode; a tunneling dielectric layer, a doped conductive layer, a second passivation layer, a conductive transport layer, and a second electrode located on the second surface; the second surface having a groove located in the second region, with a portion of the second passivation layer and a portion of the conductive transport layer located within the groove; the doped conductive layer located on the side of the tunneling dielectric layer away from the substrate layer; the conductive transport layer located on the side of the second passivation layer away from the substrate layer; and the second electrode located on the side of the doped conductive layer away from the substrate layer; a third passivation layer and a second plating layer located on the side surface, with the second plating layer located on the side of the third passivation layer away from the side surface. This solar cell solves the technical problem of improving solar cell efficiency.

The present invention relates to a back-contact solar cell and a method for fabricating the same. The method includes forming a porous lattice in a tunnel layer located in a first region on the backside of a silicon wafer having a first region and a second region, and forming a doped polysilicon layer on the surface of the tunnel layer facing away from the silicon wafer, with the doping concentration gradually decreasing in the direction away from the tunnel layer. In this application, forming multiple holes in the tunnel layer creates carrier tunneling paths within the tunnel layer, while doped atoms in the doped polysilicon layer form atomic-level "pinholes" on the surface of the tunnel layer, thereby reducing tunnel contact resistance. Furthermore, the region of the doped polysilicon layer in contact with the tunnel layer has the highest doping concentration, which, together with the tunnel layer, forms a higher asymmetric shift barrier layer, allowing majority carriers to pass through but blocking minority carriers. This allows for more uniform and smooth collection of majority carriers, enhancing the passivation effect and further improving solar cell efficiency.

The application relates to the technical field of perovskite photovoltaics, and discloses a polysiloxane polymer and a preparation method thereof, a perovskite thin film and a preparation method and application thereof, and a solar cell and application thereof. The polysiloxane polymer has a three-dimensional branched molecular structure and can realize chelation in multiple directions and multiple tooth sites. The preparation method comprises the following steps: in the presence of an inert atmosphere, tetraethyl orthosilicate and butenedioic acid are subjected to ester exchange polycondensation reaction to obtain a multi-tooth chelated hyperbranched polysiloxane polymer. In addition, the multi-tooth chelated hyperbranched polysiloxane polymer can be introduced into a perovskite thin film bulk phase, so that the defects of a perovskite material can be more effectively passivated, and the improvement of the efficiency and stability of a perovskite solar cell is further realized.

The application provides a preparation method of a solar cell grid line, including: a cell piece precursor has a to-be-slotted film layer, a plurality of to-be-slotted areas in the to-be-slotted film layer are arranged at intervals of a respective center line distance D; a laser transfer carrier plate includes a plurality of first transfer areas arranged at intervals of a distance k, k is equal to D-d, k>0, each first transfer area has a guide plate part and a filling groove which are connected and have a same width d; the center line of one guide plate part is aligned with the center line of one to-be-slotted area; laser slotting, a first laser beam emitted by a laser passes through the guide plate part to slot the to-be-slotted area to form a slot with a width of d in the to-be-slotted film layer; grid line transfer, the laser transfer carrier plate is moved horizontally along a first direction by a distance d, slurry in the filling groove is transferred to the slot by laser transfer, one grid line transfer is completed, and the laser is moved horizontally along a second direction by a distance D; the steps of laser slotting and grid line transfer are repeated. The method reduces cell surface damage and recombination, reduces cost, and improves solar cell efficiency.

This application relates to a battery cell efficiency testing device. The testing device includes an adsorption mechanism, a telescopic mechanism, and a translation mechanism. The adsorption mechanism includes a mounting plate, a piston, and a suction cup. An adsorption chamber is formed within the mounting plate. The piston is slidably disposed within the adsorption chamber along a first direction, dividing the adsorption chamber into a first chamber and a second chamber. The first chamber is connected to the outside atmosphere. The suction cup is disposed at one end of the mounting plate along the first direction, and its suction end is connected to the second chamber. The adsorption mechanism is located at the telescopic end of the telescopic mechanism, which drives the adsorption mechanism to move along the first direction. The telescopic mechanism is mounted on the translation mechanism, which drives the telescopic mechanism to move along a second direction. In other words, the adsorption mechanism of this application creates a negative pressure environment through piston movement, allowing the suction cup to adsorb the battery cell, thus preventing damage to the battery cell when the robotic arm grasps it.

The invention relates to the technical field of perovskite photovoltaics, and discloses a polysiloxane polymer and a preparation method thereof, a perovskite thin film and a preparation method and application thereof, and a solar cell and application of the solar cell. The preparation method comprises the following steps: in the presence of an inert atmosphere, carrying out transesterification condensation polymerization on tetraethyl orthosilicate and butenedioic acid to obtain the polydentate chelated hyperbranched polysiloxane polymer. Besides, the multi-tooth chelated hyperbranched polysiloxane polymer can be introduced into a perovskite thin film bulk phase, so that the defects of the perovskite material can be more effectively passivated, and the efficiency and stability of the perovskite solar cell are further improved.

The application relates to a method for improving the efficiency and stability of a perovskite solar cell, which comprises the following steps: preparing an organic interface layer on a charge transport layer, and then preparing a perovskite active layer on the organic interface layer, wherein the charge transport layer is an inorganic p-type semiconductor hole transport layer or an inorganic n-type semiconductor electron transport layer, and the organic interface material in the organic interface layer is selected from one of the following structures. The method based on the application solves the problems of poor efficiency and stability of the perovskite solar cell in the prior art.

The present invention relates to a post-processing method for preventing degradation of a cell and a perovskite-based solar cell post-processed by the method. The method can prevent or minimize a problem of a decrease in solar cell efficiency caused by cell thermal degradation inevitably occurring during a manufacturing process of a perovskite-based solar cell module.

The utility model discloses a device for improving solar cell efficiency through low-temperature rapid pretreatment, and belongs to the technical field of solar cells, the device comprises a device shell, a conveyor belt and an ultraviolet light-emitting device, the conveyor belt penetrates through the device shell, the ultraviolet light-emitting device is arranged in the device shell, and a TOPCon solar cell is placed on the conveyor belt. Compared with the prior art, the low-temperature rapid ultraviolet radiation pretreatment can replace a light injection annealing process, the equipment cost and the electric power cost are reduced, and the low-temperature rapid ultraviolet radiation pretreatment can break weak Si-H bonds in the battery and improve the passivation performance of the battery, so that the efficiency of the battery is improved, and the UV attenuation resistance of the TOPCon solar battery and the assembly can be improved.

A kind of grid line preparation method for silicon heterojunction solar cell efficiency improvement and cost reduction belongs to solar cell field. Grid line pattern is formed on the substrate deposited with silicon nitride by laser, after removing loss layer after alkali washing process, then depositing passivation layer and back field layer can effectively avoid the passivation layer damage problem caused by laser, and avoid the parasitic absorption of front amorphous silicon layer and TCO.

A new type of PV cell is comprised of a purposefully unique spatial configuration of multiple pairs of transparent thin PV films stacked top down in order of decreasing bandgaps corresponding to increasing wavelengths. Each thin-film pair is made of a material of desirable bandgap, and consecutive films separated from each other in space by a layer of air to force confinement of light waves of wavelength matching bandgap, enabling an infinite number of reflections until the wave energy corresponding to each desired wavelength is absorbed. The PV thin-films are coated to ensure that light of each wavelength is confined as intended. They are passivated to minimize surface recombination. This spatial arrangement provides multiple opportunities for photovoltaic conversion of each intended wavelength hence increasing overall conversion efficiency.

The invention belongs to the technical field of light solar cell modules, and particularly relates to halogen-free flame-retardant transparent composite glass cloth and application thereof. The flame-retardant glass cloth comprises glass cloth and an adhesive coated on the surface of the glass cloth, the adhesive comprises acrylic resin, low-molecular-weight polyacrylic acid, low-temperature curing polyester resin, a curing agent, a phosphorus-containing acrylic resin flame retardant and a silane coupling agent, and the phosphorus-containing acrylic resin flame retardant is a product obtained by bonding DOPO into the acrylic resin through chemical reaction. The phosphorus-containing acrylic resin flame retardant provided by the invention has good compatibility with a matrix, in addition, the phosphorus-containing acrylic resin flame retardant can be uniformly dispersed in the matrix through a proper grinding process, the transparency is high after compounding, the efficiency of a solar cell is not influenced, and the silane coupling agent ensures the binding force of an adhesive and glass fiber cloth, so that the flame-retardant performance of the solar cell is improved. And an ultraviolet absorbent prevents the problem of aging and yellowing caused by long-term illumination.

A mixed cation interface passivation trans-perovskite solar cell and a preparation method thereof belong to the field of perovskite solar cell efficiency, and the structure of the trans-perovskite solar cell is sequentially provided with a metal electrode layer (1), an electron transport layer (2), a 2D perovskite layer (3), a 3D perovskite layer (4), a hole transport layer (5) and a transparent electrode layer (6) from top to bottom. According to the invention, surface passivation is carried out on the trans-perovskite layer by adopting a PEABr solution post-treatment mode. And the performance of the perovskite solar cell is improved.

The disclosure discloses a solar cell and a preparation method for a solar cell. The preparation method for a solar cell comprises: sequentially forming a tunnel silicon oxide layer, an N-type doped polysilicon layer, and a front metal layer in an entire fashion on a front surface of a P-type silicon substrate; subjecting the entire front metal layer to a photoetching process to form a patterned front fine gate electrode; subjecting the tunnel silicon oxide layer and the N-type doped polysilicon layer in a region not covered by the front fine gate electrode to chemical etching to form a local tunnel silicon oxide layer and a local N-type doped polysilicon layer, wherein the widths of the local tunnel silicon oxide layer and the local N-type doped polysilicon layer are the same as the width of the front fine gate electrode. The preparation method may achieve an automatic and precise alignment of the front fine gate electrode with a local tunnel oxide passivated layer and a local polysilicon layer, thereby effectively reducing a difficulty in a preparation process of a local passivated contact emitter while ensuring the efficiency of the solar cell.

This invention discloses a method for rapidly oxidizing Spiro-OMeTAD with oxygen plasma to improve the efficiency of solar cells, belonging to the field of perovskite solar cell device technology. This invention involves treating the hole transport layer Spiro-OMeTAD with low-power oxygen plasma under substrate heating conditions, enabling rapid and uniform oxidation within a short time. This significantly improves the conductivity and carrier mobility of the thin film, while drastically reducing the exposure time of the film to air and minimizing moisture and Li₂ residues. + The interaction of ions reduces the damage of moisture to the thin film. The oxygen plasma rapid oxidation scheme of this invention not only effectively optimizes the electrical performance of the hole transport layer, but also simplifies the fabrication process and improves device consistency, laying a solid material foundation for the further fabrication of high-quality, high-stability perovskite solar cell devices.

1. Name of the product in this design: UV solar cell efficiency enhancer. 2. Purpose of this design: To improve battery efficiency and component power. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention provides a back contact solar cell and a preparation method thereof, and a photovoltaic module, and relates to the field of photovoltaic technology, and the preparation method of the back contact solar cell comprises the steps: providing a back contact solar cell substrate, enabling the first surface of the substrate to be provided with a grid line and a welding spot, and enabling the welding spot located on the grid line to be processed to be electrified, the method comprises the following steps: scanning a to-be-processed grid line by using a first laser to apply a reverse bias voltage to a back contact solar cell substrate, scanning the to-be-processed grid line by using a first laser to enable the grid line to have a first sintering region scanned by the first laser and a first shielding region not scanned by the first laser, and scanning the to-be-processed grid line by using a second laser to enable the to-be-processed grid line to have a second sintering region scanned by the second laser, the irradiation direction of the second laser is different from that of the first laser, the second sintering area covers the first shielding area, and the first sintering area covers the second shielding area, so that the area of a laser action receiving area of the grid line is increased; and the back contact solar cell efficiency is improved.

The invention belongs to the field of solar cell materials, and provides application of a light conversion material, a light conversion adhesive film containing the light conversion material, a preparation method of the light conversion adhesive film, a solar cell module and a method for enhancing efficiency and / or stability of a solar cell. The light conversion material is a compound shown as a formula I, and the definition of each group in the compound shown as the formula I is described in the specification. The light conversion material disclosed by the invention can be used as a light conversion agent of a light conversion adhesive film and can be used for a solar cell to enhance the efficiency and / or stability of the cell.