74 results about "Cell technology" patented technology

The invention discloses an optical multi-pass pool modeling and optimizing method, and belongs to the technical field of optical detection. In order to solve the problems that an existing multi-pass cell is too long in length, large in size and inconvenient to carry or transfer, and meanwhile, the mirror surface utilization rate of the multi-pass cell is low, a light path in a multi-pass cell system is accurately modeled by adopting a light ray tracing principle, and the system does not depend on traditional paraxial approximation. The problems that in the prior optical design, due to the fact that equipment is large in size, carrying is inconvenient, and due to the fact that aberration is neglected due to paraxial approximation, large deviation is generated between a calculated value and an actual value are solved. In addition, the light spot distribution is automatically optimized through the genetic algorithm, and the design and debugging time of the optical system is shortened. According to the innovative design strategy, the utilization rate of the reflector is improved, space waste is avoided, the sensitivity and accuracy of a reflection system can be remarkably improved, and further development of the optical multi-pass cell technology is promoted.

The utility model provides a back contact photovoltaic assembly and a photovoltaic system, and relates to the technical field of photovoltaic cells. According to the utility model, the back contact photovoltaic assembly is divided into the first battery string group and the second battery string group, and the middle bus bar is arranged between the first battery string group and the second battery string group for parallel connection. The chamfered edge of one back contact battery piece, closest to the middle bus bar, in each battery string included in the first battery string group faces the middle bus bar, and the right-angle edge of one back contact battery piece, closest to the middle bus bar, in each battery string included in the second battery string group faces the middle bus bar. It is ensured that a BC battery string reserved welding strip (namely a leading-out welding strip close to the bending position of the middle bus bar) composed of an even number of BC battery pieces with main grid anodes and cathodes arranged in a crossed mode is bent away from the middle bus bar, and the welding difficulty is reduced.

The invention relates to the technical field of photovoltaic cells, in particular to a large-size N-type silicon wafer for a BC cell, a preparation method of the large-size N-type silicon wafer and the BC cell. The size of the large-size N-type silicon wafer is larger than or equal to 230 mm * 230 mm, the thickness of the large-size N-type silicon wafer is 90-130 microns, the edge of the large-size N-type silicon wafer is an arc chamfer, and the edge is wrapped with a SiNx layer; the large-size N-type silicon wafer comprises a central area and an edge area surrounding the central area, and the content of doped element antimony in the edge area is smaller than or equal to 1 * 10 < 15 > atoms / cm < 3 >. And the content of the doped element antimony in the central region is 1 * 10 < 16 >-5 * 10 < 16 > atoms / cm < 3 >. By arranging the edge arc chamfer, wrapping the SiNx layer and performing edge low doping, the mechanical strength can be ensured, the fragment rate can be reduced, meanwhile, edge carrier recombination can be reduced, the open-circuit voltage can be improved, and the power output of the battery can be improved.

The invention relates to the technical field of solid fuel cells, and discloses a solid fuel cell tail gas heat energy cascade recycling system which comprises a tail gas component analysis module, a heat exchange topology construction module, a phase change heat storage control module, a residual pressure power generation adaptation module, a cascade scheduling decision module and a recycling efficiency monitoring module. The tail gas component analysis module generates a component concentration distribution map through mass spectrometry detection; the heat exchange topology construction module establishes a multi-stage heat exchanger network according to the atlas and optimizes parameters; the phase change heat storage control module deploys a phase change material array, divides a temperature control area and generates heat storage data; the excess pressure power generation adaptation module collects pressure signals and fits turbine characteristics to generate power generation parameters; the cascade scheduling decision module constructs a model through a dynamic programming algorithm and generates a scheduling instruction; and the reuse efficiency monitoring module tracks the state in real time and corrects parameters. The system realizes stepped recovery of tail gas heat energy, pressure energy and combustible components, improves energy efficiency and stability, and is suitable for solid fuel cell tail gas treatment.

This application relates to the field of photovoltaic cell technology, and more particularly to a back-contact cell, a back-contact tandem cell, and a photovoltaic module. The back-contact cell includes a body, a fine grid, a first pad, a first connecting line, and edge grid lines. The fine grid includes a first fine grid and a second fine grid. The first connecting line and the first fine grid are electrically connected to the first pad, and the second fine grid is insulated from the first pad. The second fine grid includes a first grid line and a plurality of second grid lines arranged along a second direction. The first grid line and the first connecting line are arranged along the second direction, and the second grid lines and the first connecting line are arranged along a first direction. In the first direction, the fine grid is located on one side of the edge grid lines. Both the first and second grid lines are electrically connected to the edge grid lines, improving the brightness uniformity of EL testing and the output power of the back-contact cell. Furthermore, in the first direction, the length of the first grid line is not less than the sum of the lengths of the plurality of second grid lines to improve the current transmission capability of the first grid line, thereby increasing the output power of the back-contact cell.

The present invention relates to the field of photovoltaic cell technology, namely, a bionic model for photovoltaic cell defect detection based on mimetic vision. It comprises three parts: (1) backbone network: the backbone network is used to extract effective information from the image and map the original data into the required space. The features extracted by the backbone network are passed to the neck network; (2) neck network: the neck network is used to fuse features of different scales and levels and enrich the expression capability of the features. The features fused by the neck network are passed to the detection head; (3) detection head: the detection head is mainly responsible for predicting the features, generating bounding boxes and predicting categories. The backbone network based on human receptive field and visual mechanism has a stronger abstraction capability for features and can efficiently extract effective features from photovoltaic cell electroluminescent images with single color and complex texture. The proposed neck network can effectively enhance the expression capability of defect characteristics in photovoltaic cell electroluminescent images.

This invention relates to the field of organic photovoltaic cell technology, and particularly to a low-melting-point alloy top electrode, its preparation method, and its application. The preparation method of the low-melting-point alloy top electrode includes the following steps: heating and melting a low-melting-point alloy, adding it to a syringe equipped with a heating head, and using a temperature control system to control the heating head on the syringe to maintain the low-melting-point alloy in a liquid state; controlling printing parameters so that the liquid low-melting-point alloy is pulled out from the syringe needle by shear force and printed onto a substrate; and cooling to obtain the low-melting-point alloy top electrode. This invention uses a solid low-melting-point alloy as raw material and employs fused deposition modeling to prepare a low-temperature alloy top electrode as the top electrode for organic photovoltaic cells. Its electrode film thickness is controllable, enabling the preparation of alloy films with a thickness of less than 100 μm, thereby saving materials and costs; it also exhibits good repeatability, low printing cost, and is suitable for the preparation of large-area battery modules.

The present application relates to the field of solar energy and solid oxide cell technology, and provides a solar multi-generation system based on RSOC and a control method, the system comprising: an RSOC stack module, a photovoltaic device, a first molten salt system and a second molten salt system; the RSOC stack module is in power generation mode SOFC and electrolytic hydrogen production mode PV-SOEC-PTC respectively; high-temperature oxygen-enriched air at the outlet of the RSOC stack module heats air in an air preheater after passing through a combustor, so as to realize heat energy recycling; during operation, high-temperature molten salt in the high-temperature molten salt tank of the second molten salt system enters the RSOC stack module to release heat, so as to maintain the stable working temperature of the stack; the heat-exchanged molten salt is transported to the low-temperature molten salt tank for storage, and at the same time, the first molten salt system is synchronously operated to complete the preheating of water. The high-temperature and low-temperature molten salt tanks of the second molten salt system realize bidirectional heat storage temperature control, and cooperate with the solar molten salt preheating of the first molten salt system, so as to realize efficient switching and stable and controllable temperature of SOFC power generation and SOEC electrolysis modes.

The invention discloses an application of a GmEF9 gene in enhancing soybean nematode resistance. The application of the GmEF9 gene or a biological material related to the GmEF9 gene in at least one of the following aspects: A1) regulating and controlling the soybean nematode resistance or preparing a product for regulating and controlling the soybean nematode resistance; a2) cultivating soybeans with improved nematode resistance or preparing products for improving the nematode resistance of the soybeans; a3) preparing transgenic soybeans; the nucleotide sequence of the GmEF9 gene is as shown in SEQ ID NO. 1. The gene GmEF9, which is remarkably and highly expressed in syncytial bodies of disease-resistant varieties, is successfully identified by comparing and analyzing gene expression profiles of the disease-resistant and susceptible soybean varieties in SCN-infected early-stage root tissues by utilizing a single cell nucleus transcriptome technology. The over-expression of GmEF9 can significantly enhance the SCN resistance of infected soybeans and effectively inhibit the development of nematodes in roots (J3-J4 stage). The research not only provides a new key gene resource for soybean anti-SCN breeding, but also provides a method example for analyzing a plant-pathogen interaction mechanism by using a leading-edge single cell technology.

The utility model relates to the technical field of photovoltaic cells, and provides a water surface photovoltaic system which comprises a photovoltaic assembly, a floating body and a connecting block. The connecting block is of a hollow structure and comprises a first connecting surface and a second connecting surface, a first mounting hole is formed in the first connecting surface and used for mounting the connecting block, and a second mounting hole is formed in the second connecting surface and used for mounting the photovoltaic module; the floating body is provided with a mounting surface, and the mounting surface is detachably connected with the first connecting surface; the photovoltaic module is fixedly arranged on the fixing frame, and the fixing frame is fixed on the second connecting surface. According to the embodiment of the invention, the photovoltaic module is high in strength, is not liable to deform, is tightly connected with the floating body through the hollow connecting block, is small in resistance, is high in stability, is convenient to install, and is easy to maintain.

This application discloses a universal DC belonging to the field of immune cell technology, a method for manufacturing the same, and an application. The universal DC is a universal DC that does not express HLA-I class molecules, obtained by knocking out HLA-I class genes from the original DC. When applied, depending on the HLA-I class molecular subtype of the target antigen-specific T cells to be obtained, HLA-I class molecules matching the target antigen-specific T cells can be re-expressed in the universal DC through gene editing, viral, or mRNA technology. This overcomes the cell-specific matching limitations of HLA-I class molecules present in the application of allogeneic DCs and resolves the problem of insufficient coverage of a single DC HLA-I class molecular subtype.

The invention relates to the technical field of photovoltaic cells, in particular to a preparation method of a solar cell, the solar cell and a photovoltaic module, and the preparation method of the solar cell specifically comprises the following steps: preparing a substrate; forming a passivation contact structure on the first surface of the substrate; arranging conductive paste in a first area of the second surface of the substrate; and carrying out boron diffusion doping and sintering on the first region by adopting laser, and forming an emitter layer and a second electrode in the first region. According to the preparation method of the solar cell, the solar cell and the photovoltaic module provided by the invention, the technological process can be simplified, the sheet resistance of the metal region is reduced, and the photoelectric conversion efficiency of the solar cell is improved.

This invention relates to the field of photovoltaic cell technology, and discloses a high-efficiency solar crystalline silicon substrate and its fabrication process, as well as a photovoltaic cell. The fabrication process of the high-efficiency solar crystalline silicon substrate of this invention includes a first light-trapping section fabrication step, specifically including: STEP 11: forming a protective layer on the surface of the silicon substrate; STEP 12: a film-opening step, wherein the shape of the opened film area is a narrow groove; STEP 13: a first light-trapping section forming step: the first light-trapping section includes at least one first light-trapping unit and at least one second light-trapping unit, the first light-trapping unit has a first light-trapping surface, the setting direction of the second light-trapping unit is not parallel to the setting direction of the first light-trapping unit, and at least one second light-trapping unit is disposed on the surface of each first light-trapping unit; STEP 14: a protective layer removal step. The cell fabricated using the process of this invention enables multiple reflections of light when passing through the first and second light-trapping sections, ultimately allowing for more complete absorption of the light.

The invention relates to a light energy battery technology based on ferroelectric polarization. The invention belongs to the technical field of renewable energy sources, new energy sources and clean energy sources, and belongs to national key industries. The technical problems to be solved are that the conversion efficiency of a silicon electric p-n junction solar cell is relatively low, and a photovoltaic power generation system of the silicon electric p-n junction solar cell has intermittency, volatility and uncertainty. The technical scheme for solving the problem is characterized in that ferroelectric photovoltaic positive and negative polarization is opposite in conductive property, generated positive and negative photoelectric conversion batteries form a battery unit, and formed positive and negative magnetic fields are combined into a unified magnetic field. The conversion efficiency of the battery unit is improved, all-optical and all-time fixed mode power generation is realized, and the problems of intermittency, volatility and uncertainty are avoided. The solar power generation device is mainly used for solar power generation to cope with climate changes. In the field of aerospace, energy is provided for space stations and satellites. The invention relates to the field of military weapons, and relates to cold light missiles made of energy power and cold light materials to prevent heat tracking.

The present invention belongs to the field of photovoltaic cell technology, and specifically relates to a formal perovskite solar cell with a rubidium acetate-doped electron transport layer and a preparation method thereof. The solar cell device structure comprises, from bottom to top, an FTO substrate, an electron transport layer, a doped electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer. The doped electron transport layer is a thin film layer prepared by spin-coating and annealing rubidium acetate doped into a tin dioxide (SnO2) aqueous solution. The present invention introduces rubidium ions and acetate ions at the buried interface of the perovskite film to promote the crystallization process of the perovskite film, improve the crystallization quality of the perovskite film, and fill iodine vacancy defects at the buried interface, successfully reducing the carrier recombination rate, optimizing the energy level matching between the electron transport layer and the perovskite layer, and ultimately improving the power conversion efficiency of the formal perovskite solar cell, laying a solid foundation for its commercial application and further technological development.

This application relates to the field of photovoltaic cell technology, and in particular to a method for fabricating solar cells, solar cells, and photovoltaic modules. The method for fabricating the solar cell includes: providing an N-type silicon substrate; forming a boron diffusion layer and a BSG layer on the back side of the N-type silicon substrate, and dividing the back side into alternating first and second regions; performing laser processing on the first region to form multiple voids in the BSG layer; and then performing alkaline polishing to selectively etch the boron diffusion layer in the first region while retaining the BSG layer. This fabrication method, by using a laser to form voids in the BSG layer of the first region instead of direct ablation, and utilizing these voids as channels for subsequent alkaline polishing to selectively etch away the underlying boron diffusion layer while retaining the BSG layer in the first region, minimizes damage to the silicon substrate structure and reduces lateral damage to the adjacent second region caused by laser thermal effects.

This invention relates to the field of organic photovoltaic cell technology, specifically to a non-fullerene acceptor material and a mixture containing the same. The molecular structure is optimized by limiting the side-chain alkyl chain configuration and the selection of electron-withdrawing ends of the non-fullerene acceptor material. When the non-fullerene acceptor material of this invention is applied to the photoactive layer of an organic photovoltaic device, it exhibits excellent photoelectric performance.

The utility model relates to a quartz tube mounting device and system, in particular to the technical field of photovoltaic cells, and solves the problem that quartz tube mounting equipment is low in mounting precision. The quartz tube mounting device provided by the embodiment of the utility model comprises a bearing assembly, a first propulsion assembly; a second propulsion assembly; a first guide rail; the guide piece is connected with the first guide rail in a sliding manner; and one end of the follower is connected with the bearing assembly, and the other end of the follower is movably connected with the guide piece. According to the quartz tube mounting device provided by the embodiment of the invention, the follower is shifted by the guide piece, the follower drives the bearing assembly to rotate around the vertical axis relative to the first propelling assembly, the guide piece and the follower can form a kinematic pair, and the kinematic pair is high in precision, so that the kinematic precision of the follower driven by the guide piece is high; therefore, the movement accuracy of the bearing assembly rotating around the vertical axis relative to the first propelling assembly is high, fine adjustment can be carried out, and the adjustment accuracy of the quartz tube in the axis direction is high.

This application discloses an electrode paste and a solar cell, relating to the field of photovoltaic cell technology, to solve the problem of difficulty in controlling the passivation layer during the etching process of solar cells. The electrode paste comprises: silver-coated copper powder, conductive filler, a binder system, a solvent, and additives. The binder system includes a curing resin and a curing agent. The curing resin can undergo a crosslinking reaction with the curing agent at a first temperature, which is lower than the critical oxidation temperature of the silver-coated copper powder. The solar cell includes the electrode paste provided by the above-described technical solution. The electrode paste provided in this application is used to prepare solar cells.

This invention relates to the field of photovoltaic cell technology, and discloses a graphical simulation method and related equipment for heterojunction cells. The method includes acquiring measurement data of the cell grid lines; constructing a simulation model of the heterojunction cell based on the acquired grid line measurement data; optimizing the number of front and back grid lines according to the simulation model, and determining the final grid line layout based on the optimization results. The simulation model, built based on accurate grid line measurement data, can accurately simulate the performance of the cell under different grid line layouts. By optimizing the number of front and back grid lines, the optimal grid line layout can be accurately found, thereby maximizing the photoelectric conversion efficiency and output power of the cell.

The utility model relates to the technical field of photovoltaic cells, and particularly discloses an IV test intelligent diagnosis system of a photovoltaic cell array, which comprises a cabinet body, a liquid crystal display screen, a photovoltaic cell array confluence module, a relay centralized control module, an intelligent control module, a photovoltaic cell array output acquisition module and a power supply module, the cabinet body is an accommodating structure of the system, a liquid crystal display screen is arranged on the surface of the cabinet body, and the photovoltaic cell array convergence module, the relay centralized control module, the intelligent control module, the photovoltaic cell array output acquisition module and the power supply module are all installed in the cabinet body. According to the IV test intelligent diagnosis system of the photovoltaic cell array, resistance parameters are controlled by an automatic control system in a program mode to change array output voltage, and compared with a traditional complex operation mode of manually changing the resistance value of an electronic load, the scanning efficiency of an IV curve is greatly improved, so that the test process is more convenient and efficient, and the test efficiency is improved. And the labor and time cost is reduced.

This invention discloses a method and system for photovoltaic cell parameter identification based on an intelligent hierarchical model, relating to the field of photovoltaic cell technology. The method includes real-time acquisition of photovoltaic cell operating data, denoising and feature extraction of the acquired data, and dimensionality reduction and fusion of the data using an adaptive tensor decomposition algorithm. Based on the physical characteristics of photovoltaic cells, an intelligent hierarchical model is constructed, and a feature interaction mechanism based on a hypergraph neural network is introduced to train the intelligent hierarchical model. The model parameters are optimized using an adaptive differential evolution algorithm based on chaotic mapping. The test set is input into the trained intelligent hierarchical model, and key parameters of the photovoltaic cells are output layer by layer. The identified parameters are stored and visualized, and a report on parameter uncertainty quantification and dynamic confidence intervals are generated. This invention guides the optimized design and operation control of photovoltaic systems through accurate parameter identification and model optimization, improving overall performance and energy conversion efficiency.

This utility model discloses a flotation cell, belonging to the field of flotation cell technology. It includes a cell body and an aeration structure. The cell body has through-slots and locking slots on its left and right sides, respectively. Bottom baffles and top baffles are respectively provided at the bottom and top of the through-slots. The aeration structure includes a connecting pipe, a movable cover, an aeration pipe, and an aeration pump. The connecting pipe is located at the bottom of the cell body, the movable cover is located at the bottom of the outer surface of the connecting pipe, the aeration pipe is located at the bottom of the movable cover, and the aeration pump is located at the end of the aeration pipe furthest from the movable cover. This flotation cell changes the size of the bubbles by altering the length of the aeration pipe extending into the movable cover, thus changing the airflow at the bottom. The combination of porous media, the aeration pipe, the movable cover, and the aeration pump simulates the effect of a flotation column foamer, achieving micro-bubbles during bottom aeration, optimizing the flotation effect, and improving the flotation recovery rate of both oxide and sulfide ores. Bottom aeration allows large mineral particles to contact the bubbles, improving their floatability.

This application provides a PERC cell and its fabrication method, belonging to the field of photovoltaic cell technology. The fabrication method includes texturing, diffusion, etching, back-side polishing, annealing, back-side coating, and front-side coating. The back-side coating step includes: introducing ozone gas into a device containing an annealed silicon wafer for oxidation treatment, forming a back-side silicon dioxide layer on the back of the silicon wafer. Then, ozone is continuously introduced into the same device as an oxygen source, and an aluminum source is added to deposit a back-side aluminum oxide layer on the back-side silicon dioxide layer. A back-side silicon nitride layer is then deposited on the back-side aluminum oxide layer. This fabrication method forms a back-side silicon oxide layer by introducing ozone, and using ozone as an oxygen source, a back-side aluminum oxide layer can be deposited in the ozone-introducing device. Both the back-side silicon dioxide layer and the back-side aluminum oxide layer can be formed in the same device, eliminating the need for additional ozone oxidation equipment, maintaining the cleanliness of the film layer contact interface, and improving the PID performance of the PERC cell.

A valve assembly may include a valve body including a plurality of conduits extending through the valve body. A valve assembly may include a plurality of pinch bits configured to translate parallel to a first axis to selectively engage the conduits. A valve assembly may include a plunger comprising: a plunger shaft, a first bit guide configured to actuate a first pinch bit of the plurality of pinch bits in a direction parallel to the first axis in response to translating the plunger shaft along a first direction substantially perpendicular to the first axis; and a second bit guide configured to actuate a second pinch bit of the plurality of pinch bits in a direction parallel to the first axis in response to translating the plunger shaft along the first direction, wherein the plunger is configured to translate the first pinch bit and the second pinch bit in opposite directions.

This invention relates to the field of photovoltaic cell technology, specifically to a photovoltaic module cover plate and its preparation method, a photovoltaic module and its preparation method, and its applications. A photovoltaic module cover plate includes a glass cover plate, which comprises a glass substrate and a microlens array located on one side surface thereon. The glass substrate and the microlens array are integrally formed. The microlens array includes a plurality of convex lens units; each convex lens unit has a hemispherical structure, and its diameter D is 10~500μm. The center-to-center distance L between adjacent convex lens units satisfies the condition 1≤L / D≤1.2. The photovoltaic module cover plate of this invention exhibits stable and long-lasting self-cleaning performance, high power generation efficiency, and strong process compatibility.

This application provides a method for improving the uniformity of alumina passivation films, relating to the field of photovoltaic cell technology. The method includes: placing a substrate in a reaction chamber; heating the reaction chamber and introducing a first reaction source and an inert gas for deposition; subjecting the reaction chamber to a first vacuum, followed by a first purging with the inert gas, and then subjecting the reaction chamber to a second vacuum; introducing a second reaction source and the inert gas for atomic layer deposition; subjecting the reaction chamber to a third vacuum, followed by a second purging with the inert gas, and then subjecting the reaction chamber to a fourth vacuum; wherein the first reaction source comprises trimethylaluminum, the second reaction source comprises water vapor, and the inert gas comprises nitrogen. The method of this application can effectively make the passivation film growth more uniform, thereby improving the density and uniformity of the passivation film, and thus meeting the requirements of the photovoltaic cell field for alumina passivation films.

This invention relates to the field of aluminum electrolysis cell technology, specifically to an aluminum electrolysis cell overhaul slag treatment device and process. It includes a high-temperature heating base frame, with a feeding rack fixedly connected to the rear side of the top of the base frame. By using the high-temperature heating base frame and the feeding rack, this invention achieves quantitative intermittent feeding of the overhaul slag. Through the reciprocating motion of the triangular abutment block in conjunction with the expansion and contraction structure and the sealing structure, the amount of material fed in a single batch is precisely controlled, avoiding the problem of blockage at the crushing system inlet caused by simultaneous feeding of large amounts of material. This ensures smooth material transport in the crushing process, maintains stable operation of the processing flow, and the precise feeding control accurately controls the subsequent addition ratio of chemical binders and curing agents, enabling the mixed material to achieve the expected molding effect. This avoids molding quality defects caused by imbalanced proportions, providing a qualified material basis for subsequent high-temperature calcination treatment and effectively improving the processing efficiency of high-temperature calcination.

The application relates to an optimization method of a touch display screen integrated with an On-cell technology and a touch display screen. The method comprises the following steps: scanning a display area by using a row-column separate scanning mode to obtain a plurality of suspected position points; scanning an area where the suspected position points are located by using a row-column response scanning mode, and screening according to a scanning result to obtain a real position point; determining an edge area of the real position point by using the row-column separate scanning mode, drawing an edge area contour, and calculating a center position point of the edge area contour; establishing a scanning range based on the center position point, and tracking movement of the real position point in the scanning range by using the row-column response scanning mode; and dynamically updating the center position point of the edge area contour in the tracking process. The optimization method of the touch display screen integrated with the On-cell technology and the touch display screen disclosed by the application realize accurate positioning and dynamic tracking of a touch area by combining the row-column separate scanning mode and the row-column response scanning mode, so as to improve the recognition accuracy of touch.

This invention relates to the field of photovoltaic cell technology, specifically to a perovskite solar cell and its fabrication method. The fabrication method of the perovskite solar cell includes the following steps: fabricating a first carrier transport layer on one side of a transparent conductive electrode; fabricating a perovskite light-absorbing layer on the side of the first carrier transport layer facing away from the transparent conductive electrode; grinding and polishing the side of the perovskite light-absorbing layer facing away from the first carrier transport layer; fabricating a second carrier transport layer on the side of the perovskite light-absorbing layer facing away from the first carrier transport layer; and fabricating a metal electrode layer on the side of the second carrier transport layer facing away from the perovskite light-absorbing layer, thereby obtaining the perovskite solar cell. The perovskite solar cell fabrication method provided by this invention effectively reduces the surface undulation of the perovskite light-absorbing layer, enhances the adhesion between the second carrier transport layer and the perovskite light-absorbing layer, improves charge transport extraction efficiency, and enhances the photoelectric conversion efficiency and stability of the perovskite solar cell.