Large-area flexible perovskite photoelectric assembly and preparation method and packaging method thereof

Abstract

The invention belongs to the field of photovoltaic technology, and relates to a large-area flexible perovskite photoelectric assembly and a preparation method and packaging method thereof, and the large-area flexible perovskite photoelectric assembly is formed by seamlessly splicing a plurality of small-area flexible perovskite battery modules in a series connection and / or parallel connection mode. Wherein the effective area of the small-area flexible perovskite battery module is less than or equal to 50cm < 2 >; the effective area of the large-area flexible perovskite photoelectric assembly is in any size. The photoelectric conversion efficiency of the small-area flexible perovskite battery module and the photoelectric conversion efficiency of the large-area flexible perovskite photoelectric assembly are both higher than 20%. The method successfully breaks through the bottlenecks of low photoelectric conversion efficiency and limited size of the large-area flexible perovskite photovoltaic cell prepared in the prior art, and is beneficial to large-scale popularization and application.

Description

Technical Field

[0001] The present invention belongs to the field of photovoltaic technology and relates to a perovskite photoelectric component, and in particular to a large-area flexible perovskite photoelectric component and a preparation method and a packaging method thereof. Background Art

[0002] Currently, perovskite photovoltaic components have shown great commercial potential due to their excellent theoretical efficiency, simple preparation process and broad application prospects. However, in practical applications, they face the problems of stability and decreased photoelectric conversion efficiency after large-scale preparation, which have become key obstacles to their widespread commercialization.

[0003] Generally speaking, the factors affecting the stability of perovskite photovoltaic modules can be attributed to two aspects: internal and external. Among them, the internal factors are mainly due to the structural instability caused by the traditional preparation process, which is usually solved by optimizing and improving the process; the external factors are mainly due to water and oxygen corrosion, and effective packaging technology has become a key means to cope with this challenge.

[0004] In addition, the core reason why the efficiency of large-area flexible perovskite photovoltaic modules is limited is that the existing processes and equipment cannot ensure the uniformity of film formation of the active layer (including hole transport layer, perovskite layer, electron transport layer, electrode layer and other functional layers) during the preparation process. This technical bottleneck is difficult to achieve breakthrough progress in the foreseeable short term, and it is also the fundamental reason why the efficiency of large-area perovskite photovoltaic cells is generally lower than that of small-area cells.

[0005] It can be seen that how to provide a preparation method and packaging method suitable for large-area flexible perovskite photovoltaic components, improve the structural stability and photoelectric conversion efficiency of large-area flexible perovskite photovoltaic components, and improve the water and oxygen barrier effect has become an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a large-area flexible perovskite photovoltaic component and a preparation method and packaging method thereof, which successfully breaks through the bottleneck of low photoelectric conversion efficiency and limited size in the prior art of preparing large-area flexible perovskite photovoltaic cells.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a large-area flexible perovskite photovoltaic component, which is formed by seamlessly splicing a plurality of small-area flexible perovskite battery modules in series and / or parallel.

[0009] The effective area of ​​the small-area flexible perovskite battery module is ≤50cm 2; The effective area of ​​the large-area flexible perovskite optoelectronic component can be of any size.

[0010] The photoelectric conversion efficiency of the small-area flexible perovskite battery module and the large-area flexible perovskite photoelectric component is both above 20%.

[0011] In view of the problems of low photoelectric conversion efficiency and limited size of large-area flexible perovskite photovoltaic cells prepared by prior art, the present invention adopts high-efficiency small-area flexible perovskite battery modules, and seamlessly splices equivalent large-area flexible perovskite photovoltaic components in a series-parallel manner. The seamless splicing process will not destroy the internal structure of the original small-area battery module, so the high efficiency of the battery can be maintained. The series-parallel splicing meets the requirements of different voltages and currents, and large-area photovoltaic components of any size can be constructed, which ultimately significantly improves the structural stability and photoelectric conversion efficiency of large-area flexible perovskite photovoltaic components, which is conducive to large-scale promotion and application.

[0012] Preferably, the interior of the small-area flexible perovskite battery module contains mutually parallel P1 etching lines, P2 etching lines and P3 etching lines, and the P1 etching lines, P2 etching lines and P3 etching lines construct a sub-battery combination connected in series inside the battery module.

[0013] In a second aspect, the present invention provides a method for preparing a large-area flexible perovskite photovoltaic component as described in the first aspect, the preparation method comprising the following steps:

[0014] (1) Prepare several small-area flexible perovskite battery modules;

[0015] (2) seamlessly splicing a plurality of small-area flexible perovskite battery modules obtained in step (1) in series and / or in parallel to obtain a large-area flexible perovskite photovoltaic component.

[0016] Preferably, the preparation process of the small-area flexible perovskite battery module in step (1) is accompanied by P1 etching, P2 etching and P3 etching in sequence to form P1 etching lines, P2 etching lines and P3 etching lines parallel to each other.

[0017] Preferably, the P1 etching, P2 etching and P3 etching respectively include laser etching.

[0018] Preferably, the small-area flexible perovskite battery module in step (2) is cut before seamless splicing.

[0019] Preferably, the cutting process is carried out in a direction parallel to the etching line.

[0020] Optionally, the path of the cutting process overlaps with the P1 etching line.

[0021] Optionally, the cutting process path is located between the P1 etching line and the P2 etching line.

[0022] Preferably, the seamless splicing in step (2) includes: using highly conductive tape to interconnect the back electrodes of the battery module retaining the P1 etching line and the battery module retaining the P2 etching line and the P3 etching line to construct a series and / or parallel structure to achieve seamless splicing.

[0023] Preferably, the highly conductive tape comprises a bidirectionally conductive copper foil tape or aluminum foil tape.

[0024] In a third aspect, the present invention provides a packaging method for a large-area flexible perovskite photovoltaic component as described in the first aspect, the packaging method comprising the following steps:

[0025] (a) using a continuous lamination packaging method to sequentially arrange an adhesive film and a water and oxygen barrier film on both sides of a large-area flexible perovskite photovoltaic component, and the adhesive film is located between the photovoltaic component and the water and oxygen barrier film;

[0026] (b) Between the water and oxygen barrier films on both sides of the photovoltaic component, edge sealing adhesive is used to seal the edges of the photovoltaic component to obtain a large-area flexible perovskite photovoltaic component with a packaging structure.

[0027] The present invention uses continuous lamination packaging technology to package large-area flexible perovskite photovoltaic components, which effectively solves the problem that the size of the packaging components is limited by the lamination equipment, and ensures the water and oxygen barrier properties and structural stability of the large-area photovoltaic components in practical applications.

[0028] Preferably, the continuous lamination packaging method in step (a) is carried out in a vacuum lamination device, and the effective lamination area width of the vacuum lamination device is ≥ the effective power generation area width of the large-area flexible perovskite photovoltaic component.

[0029] Preferably, the surface of the water and oxygen barrier film in step (a) is also provided with an inorganic barrier layer.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The present invention adopts a high-efficiency small-area flexible perovskite battery module, and seamlessly splices an equivalent large-area flexible perovskite photovoltaic module in a series-parallel manner. The seamless splicing process will not destroy the internal structure of the original small-area battery module, so the high efficiency of the battery can be maintained. The series-parallel splicing meets the requirements of different voltages and currents, and a large-area photovoltaic module of any size can be constructed. Ultimately, the structural stability and photoelectric conversion efficiency of the large-area flexible perovskite photovoltaic module are significantly improved, which is conducive to large-scale promotion and application.

[0032] (2) The present invention uses continuous lamination packaging technology to package large-area flexible perovskite photovoltaic components, which effectively solves the problem that the size of the packaging components is limited by the lamination equipment, and ensures the water and oxygen barrier properties and structural stability of large-area photovoltaic components in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the series splicing and parallel splicing of the large-area flexible perovskite photovoltaic components provided by the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a small-area flexible perovskite battery module provided by the present invention;

[0035] Figure 3 It is a schematic diagram of the traditional small battery unit structure;

[0036] Figure 4 This is a flow chart for preparing a small-area flexible perovskite battery module provided by the present invention;

[0037] Figure 5 It is a schematic diagram of the dead area and the cutting area in the small-area flexible perovskite battery module provided by the present invention;

[0038] Figure 6 This is a schematic diagram of seamless splicing of two adjacent small-area flexible perovskite battery modules;

[0039] Figure 7 This is a schematic diagram of the structure of a large-area flexible perovskite photovoltaic component provided in Example 1.

[0040] Among them: 1-transparent substrate; 2-conductive layer; 3-hole transport layer; 4-perovskite layer; 5-electron transport layer; 6-metal electrode; 7-electrode line; 8-highly conductive tape; 10-P1 etching line; 20-P2 etching line; 30-P3 etching line. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only used to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0042] A certain embodiment of the present invention provides a large-area flexible perovskite photovoltaic component, such as Figure 1 As shown, the large-area flexible perovskite photovoltaic component is formed by seamlessly splicing a number of small-area flexible perovskite battery modules in series and / or parallel.

[0043] The effective area of ​​the small-area flexible perovskite battery module is ≤50cm 2 , for example, it can be 5cm 2 , 10cm2 、15cm 2 , 20cm 2 、25cm 2 、30cm 2 、35cm 2 、40cm 2 、45cm 2 or 50cm 2 , the effective area of ​​the large-area flexible perovskite photovoltaic component is of any size.

[0044] The photoelectric conversion efficiency of the small-area flexible perovskite battery module and the large-area flexible perovskite photovoltaic component is above 20%, for example, it can be 20%, 21%, 22%, 23%, 24% or 25%, but it is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0045] In view of the problems of low photoelectric conversion efficiency and limited size of large-area flexible perovskite photovoltaic cells prepared by prior art, the present invention adopts high-efficiency small-area flexible perovskite battery modules, and seamlessly splices equivalent large-area flexible perovskite photovoltaic components in a series-parallel manner. The seamless splicing process will not destroy the internal structure of the original small-area battery module, so the high efficiency of the battery can be maintained. The series-parallel splicing meets the requirements of different voltages and currents, and large-area photovoltaic components of any size can be constructed, which ultimately significantly improves the structural stability and photoelectric conversion efficiency of large-area flexible perovskite photovoltaic components, which is conducive to large-scale promotion and application.

[0046] like Figure 2 As shown, the interior of the small-area flexible perovskite battery module includes mutually parallel P1 etching lines 10, P2 etching lines 20 and P3 etching lines 30, and the P1 etching lines 10, P2 etching lines 20 and P3 etching lines 30 construct a sub-battery combination connected in series inside the battery module.

[0047] In the present invention, the small-area flexible perovskite battery module includes a stacked transparent substrate 1, a conductive layer 2, a hole transport layer 3, a perovskite layer 4, an electron transport layer 5 and a metal electrode 6. The material of each layer can be adjusted according to the actual situation. For example, the material of the conductive layer 2 can be ITO or FTO, as long as the functions of each layer can be realized, so it is not particularly limited here.

[0048] The small-area flexible perovskite battery module used in the present invention is significantly different from the traditional small battery unit in structure. Figure 3 As shown, the interior of the small battery cell does not contain the P1-P3 etching lines, the electrode lines 7 are respectively connected to the conductive layer 2 and the metal electrode 6, and the effective area is usually less than 1 cm 2If the above-mentioned small battery units are used to splice large-area photovoltaic modules, they often face problems such as loss of efficiency of long-distance carrier transmission, battery short-circuit failure caused by defects, and sharp decline in efficiency due to uneven coating. Therefore, traditional small battery units are not suitable for splicing large-area photovoltaic modules.

[0049] In addition, the mainstream large-area flexible perovskite battery module usually uses P1-P3 etching lines on the surface of the large-area battery module to divide the large-area battery into several small-area sub-batteries, and connect these sub-batteries in series and parallel to each other, thereby constructing an integrated large-area series-parallel module. However, this technology cannot avoid the problem that the efficiency of the battery module prepared in a large area is much lower than the efficiency of the small-area battery module prepared in the same way, which is essentially different from the technical solution of the present invention.

[0050] An embodiment of the present invention further provides a method for preparing the large-area flexible perovskite photovoltaic component described in any of the above embodiments, the preparation method comprising the following steps:

[0051] (1) Prepare several small-area flexible perovskite battery modules;

[0052] (2) seamlessly splicing a plurality of small-area flexible perovskite battery modules obtained in step (1) in series and / or in parallel to obtain a large-area flexible perovskite photovoltaic component.

[0053] In some embodiments, the preparation process of the small-area flexible perovskite battery module in step (1) is accompanied by sequentially performing P1 etching, P2 etching and P3 etching to form mutually parallel P1 etching lines 10, P2 etching lines 20 and P3 etching lines 30 (see Figure 4 ).

[0054] In some embodiments, the P1 etching, P2 etching, and P3 etching each include laser etching.

[0055] In some embodiments, the small-area flexible perovskite battery module described in step (2) is cut before seamless splicing.

[0056] In some embodiments, the cutting process is performed in a direction parallel to the etching lines, that is, parallel to the P1 etching line 10 , the P2 etching line 20 , and the P3 etching line 30 .

[0057] In some embodiments, the path of the cutting process overlaps with the P1 etching line 10 .

[0058] In some embodiments, the path of the cutting process is located between the P1 etching line 10 and the P2 etching line 20 .

[0059] The seamless splicing defined in the present invention is a significant improvement over the conventional P1-P3 etching process. In the conventional process, the dead zone (the area that cannot generate electricity but is crucial for building the sub-cell series-parallel structure) is usually located between the P1 etching line 10 and the P3 etching line 30 (see Figure 5 ).

[0060] In order to achieve the effect of seamless splicing, the present invention utilizes the cuttability of the flexible battery module and performs cutting along the direction parallel to the etching line (the cutting area is shown in FIG. Figure 5 ), this cutting process actually creates a new P1 etching line 10, and a new dead zone would have been formed between the two P1 etching lines 10. In order to minimize the dead zone area, the present invention cuts along the P1 etching line 10 (i.e., the cutting process path overlaps with the P1 etching line 10), so that the two P1 etching lines 10 overlap with each other, or cuts between the P1 etching line 10 and the P2 etching line 20 (i.e., the cutting process path is located between the P1 etching line 10 and the P2 etching line 20), thereby effectively avoiding the introduction of a new dead zone and minimizing the dead zone area.

[0061] In some embodiments, the seamless splicing in step (2) includes: using a highly conductive tape 8 to connect the back electrodes of the battery module retaining the P1 etching line 10 and the battery module retaining the P2 etching line 20 and the P3 etching line 30 to each other, to construct a series and / or parallel structure, and to achieve seamless splicing (see Figure 6 ).

[0062] In some embodiments, the highly conductive tape 8 includes a bidirectionally conductive copper foil tape or an aluminum foil tape.

[0063] In order to solve the problems of increased resistance, difficult to control contact resistance and easy increase of dead zone area after series-parallel splicing, the present invention uses a highly conductive tape 8 to connect the back electrodes of the battery module. Its resistivity is much lower than that of ITO and FTO, and is almost negligible, thereby effectively reducing the adverse effects of resistance. At the same time, in conjunction with the laser etching process, by accurately controlling the etching process (such as reducing the laser etching width), the dead zone area is significantly reduced, further improving the battery performance.

[0064] An embodiment of the present invention further provides a packaging method for the large-area flexible perovskite photovoltaic component described in any of the above embodiments, and the packaging method comprises the following steps:

[0065] (a) using a continuous lamination packaging method to sequentially arrange an adhesive film and a water and oxygen barrier film on both sides of a large-area flexible perovskite photovoltaic component, and the adhesive film is located between the photovoltaic component and the water and oxygen barrier film;

[0066] (b) Between the water and oxygen barrier films on both sides of the photovoltaic component, edge sealing adhesive is used to seal the edges of the photovoltaic component to obtain a large-area flexible perovskite photovoltaic component with a packaging structure.

[0067] In view of the high sensitivity of perovskite photovoltaic components to water and oxygen, effective packaging processing is the key to realizing their application value. The present invention splices large-area flexible perovskite photovoltaic components with an effective area of ​​any size in series and parallel. If the length is several meters or even hundreds of meters, the size is far beyond the processing capacity of existing lamination equipment. In this regard, the present invention adopts a continuous lamination packaging method to successfully realize the packaging processing of ultra-long flexible photovoltaic components.

[0068] In short, the present invention uses continuous lamination packaging technology to package large-area flexible perovskite photovoltaic components, which effectively solves the problem that the size of the packaging components is limited by the lamination equipment, and ensures the water and oxygen barrier properties and structural stability of large-area photovoltaic components in practical applications.

[0069] In certain embodiments, the continuous lamination packaging method in step (a) is performed in a vacuum lamination device, and the effective lamination area width of the vacuum lamination device is ≥ the effective power generation area width of the large-area flexible perovskite photovoltaic module.

[0070] In certain embodiments, an inorganic barrier layer is further disposed on the surface of the water and oxygen barrier film in step (a), and the inorganic barrier layer is disposed by physical deposition and / or chemical deposition.

[0071] The material of the inorganic barrier layer may be aluminum oxide, silicon oxide, aluminum nitride or silicon nitride, etc., as long as the water and oxygen barrier effect can be achieved, and the specific material is not particularly limited.

[0072] In the present invention, the physical deposition and chemical deposition are conventional film deposition methods in the art. As long as the inorganic barrier layer can be smoothly deposited, no specific limitation is made on the deposition conditions and process parameters.

[0073] Example 1

[0074] This embodiment provides a large-area flexible perovskite photovoltaic component and a preparation method thereof, the preparation method comprising the following steps:

[0075] (1) Prepare 20 small-area flexible perovskite battery modules. The effective power generation area of ​​each small-area battery module is 7 cm × 7 cm, that is, the effective area is 49 cm 2, each of which contains parallel P1-P3 etching lines, and the etching lines construct a sub-battery combination connected in series inside the battery module to form a pin structure battery with a photoelectric conversion efficiency of nearly 20%. The specific preparation method is: firstly, laser etching P1 on the surface of the flexible conductive substrate, and then sequentially depositing the hole transport layer Meo-4PACZ, the perovskite layer, the passivation layer F-PEAI and the electron transport layer C60, BCP, and then laser etching P2, and finally evaporating the copper electrode and laser etching P3 to obtain a small-area battery module;

[0076] (2) Under the premise of ensuring that the P1-P3 splicing sequence of all battery modules is consistent, the P1 etching line of the edge sub-battery is cut along the P1 etching line, and the back-light electrodes of the battery containing only the P1 edge and the battery containing the P2 and P3 edges are connected in series with each other through copper foil tape, and every two batteries are connected in series to form a group, and then the positive and negative electrodes of the series battery group are connected in parallel respectively to form a splicing module with an effective power generation area of ​​14cm×70cm (see Figure 7 ).

[0077] This embodiment also performs packaging processing on the splicing module obtained above, which specifically includes the following steps:

[0078] (a) A vacuum lamination device with an effective lamination area of ​​40 cm × 40 cm is used to continuously laminate and encapsulate the spliced ​​module, and the encapsulation structure from the light-facing side to the backlight side is a high-transmittance water and oxygen barrier film, an adhesive film, a spliced ​​module, another layer of adhesive film, and a water and oxygen barrier film;

[0079] (b) Between the water and oxygen barrier films on the two side surfaces of the splicing module, edge sealing glue is used to seal the edges of the splicing module to ensure the water and oxygen barrier effect, thereby obtaining a large-area flexible perovskite photovoltaic component with a packaging structure.

[0080] In this embodiment, the water and oxygen barrier film, the adhesive film and the edge sealing adhesive have no significant effect on the photoelectric conversion efficiency of the photoelectric component, so the specific material and model of each film layer are not specifically described here.

[0081] Performance Test:

[0082] Reference standards: IEC 61215 and IEC 60904

[0083] Test method: Use an IV tester and an electrical test system to record current density and voltage values ​​by scanning voltage (forward and reverse), draw an IV curve, and calculate open circuit voltage (Voc), short circuit current density (Jsc), fill factor (FF) and photoelectric conversion efficiency (PCE).

[0084] Test conditions: light intensity 1000W / m 2(AM1.5G spectrum), temperature 25±5℃, humidity 20±10%.

[0085] Equipment calibration: Use standard light sources and light detectors to calibrate the solar simulator to ensure spectral matching and lighting uniformity.

[0086] After testing, the photoelectric conversion efficiency of the large-area flexible perovskite photovoltaic component obtained in this embodiment is still stable at about 20%, which is similar to the photoelectric conversion efficiency of the original small-area battery module.

[0087] It can be seen that the present invention adopts a high-efficiency small-area flexible perovskite battery module, and seamlessly splices an equivalent large-area flexible perovskite photovoltaic component in a series-parallel manner. The seamless splicing process will not destroy the internal structure of the original small-area battery module, so the high efficiency of the battery can be maintained. The series-parallel splicing meets the needs of different voltages and currents, and large-area photovoltaic components of any size can be constructed. Ultimately, the structural stability and photoelectric conversion efficiency of the large-area flexible perovskite photovoltaic component are significantly improved, which is conducive to large-scale promotion and application.

[0088] In addition, the present invention uses continuous lamination packaging technology to package large-area flexible perovskite photovoltaic components, which effectively solves the problem that the size of the packaging components is limited by the lamination equipment, and ensures the water and oxygen barrier properties and structural stability of large-area photovoltaic components in practical applications.

[0089] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention are within the protection scope and disclosure scope of the present invention.

Claims

1. A large-area flexible perovskite photovoltaic component, characterized in that: The large-area flexible perovskite photovoltaic component is formed by seamlessly splicing a number of small-area flexible perovskite battery modules in series and / or parallel connection; The effective area of ​​the small-area flexible perovskite battery module is ≤50cm 2 ; The effective area of ​​the large-area flexible perovskite photovoltaic component is of any size; The photoelectric conversion efficiency of the small-area flexible perovskite battery module and the large-area flexible perovskite photoelectric component is both above 20%.

2. The large-area flexible perovskite photovoltaic component according to claim 1, characterized in that: The interior of the small-area flexible perovskite battery module contains mutually parallel P1 etching lines, P2 etching lines and P3 etching lines, and the P1 etching lines, P2 etching lines and P3 etching lines construct a sub-battery combination connected in series inside the battery module.

3. A method for preparing a large-area flexible perovskite photovoltaic module as claimed in claim 1 or 2, characterized in that: The preparation method comprises the following steps: (1) Prepare several small-area flexible perovskite battery modules; (2) seamlessly splicing a plurality of small-area flexible perovskite battery modules obtained in step (1) in series and / or in parallel to obtain a large-area flexible perovskite photovoltaic component.

4. The preparation method according to claim 3, characterized in that: In the preparation process of the small-area flexible perovskite battery module in step (1), P1 etching, P2 etching and P3 etching are performed in sequence to form P1 etching lines, P2 etching lines and P3 etching lines parallel to each other; Wherein, the P1 etching, P2 etching and P3 etching respectively include laser etching.

5. The preparation method according to claim 4, characterized in that: Step (2) The small-area flexible perovskite battery module is cut before seamless splicing; Wherein, the cutting process is performed in a direction parallel to the etching line.

6. The preparation method according to claim 5, characterized in that: The cutting process path overlaps with the P1 etching line; Alternatively, the path of the cutting process is located between the P1 etching line and the P2 etching line.

7. The preparation method according to claim 6, characterized in that: The seamless splicing in step (2) comprises: using a highly conductive tape to connect the back electrodes of the battery module retaining the P1 etching line and the battery module retaining the P2 etching line and the P3 etching line to each other, thereby constructing a series and / or parallel structure to achieve seamless splicing; Wherein, the highly conductive tape comprises a bidirectionally conductive copper foil tape or aluminum foil tape.

8. A packaging method for a large-area flexible perovskite photovoltaic component as claimed in claim 1 or 2, characterized in that: The packaging method comprises the following steps: (a) using a continuous lamination packaging method to sequentially arrange an adhesive film and a water and oxygen barrier film on both sides of a large-area flexible perovskite photovoltaic component, and the adhesive film is located between the photovoltaic component and the water and oxygen barrier film; (b) Between the water and oxygen barrier films on both sides of the photovoltaic component, edge sealing glue is used to seal the edges of the photovoltaic component to obtain a large-area flexible perovskite photovoltaic component with a packaging structure.

9. The packaging method according to claim 8, characterized in that: The continuous lamination packaging method in step (a) is carried out in a vacuum lamination device, and the effective lamination area width of the vacuum lamination device is ≥ the effective power generation area width of the large-area flexible perovskite photovoltaic component.

10. The packaging method according to claim 8 or 9, characterized in that: In step (a), an inorganic barrier layer is also provided on the surface of the water and oxygen barrier film.

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