Perovskite photovoltaic module

Abstract

The utility model provides a perovskite photovoltaic assembly. The perovskite photovoltaic assembly comprises a substrate, a perovskite solar cell module, a packaging structure, a covering layer and a protective layer. The perovskite solar cell module is located on one side of the substrate; the packaging structure is located on one side, away from the substrate, of the perovskite solar cell module, and the packaging structure wraps the upper surface and the side face of the perovskite solar cell module; the covering layer is located on one side, deviating from the substrate, of the packaging structure; the orthographic projection of the covering layer on the substrate covers the orthographic projection of the packaging structure on the substrate. The covering layer is arranged in the perovskite photovoltaic module, so that defects such as holes, dirt spots and the like of the perovskite layer can be visually covered, and the attractive effect of the perovskite solar cell is improved. And meanwhile, water and oxygen in the environment can be blocked, so that the service life of the perovskite photovoltaic module is prolonged, and the reliability of the perovskite photovoltaic module in the storage and use processes is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to perovskite solar cell technical field, specifically belongs to a perovskite photovoltaic module. BACKGROUND

[0002] Perovskite photovoltaic module has been widely concerned in recent years due to its high efficiency, low cost and processability. Perovskite material has great application potential in the photovoltaic field due to its excellent photoelectric performance.

[0003] The film layer structure of the perovskite photovoltaic module mainly uses TCO glass as a substrate, deposits a hole transport layer, a perovskite light absorption layer, an electron transport layer and an electrode layer on the TCO glass, then performs butyl glue, POE glue layer and cover plate glass packaging, and finally sets a tempered glass on the back of the TCO glass.

[0004] The perovskite light absorption layer in the perovskite photovoltaic module is mainly prepared by a coating process. However, due to the low viscosity of the perovskite solution, the cleanliness of the substrate surface and the poor wettability of the material, etc., defects such as holes and dirt spots are easily generated on the perovskite light absorption layer during the coating process, resulting in poor appearance and uniformity of the perovskite photovoltaic module.

[0005] In addition, during the preparation of the perovskite photovoltaic module, the wide laser scribing line caused by the laser scribing process and the dirt left by the laser edge cleaning also result in poor appearance and uniformity of the perovskite photovoltaic module. At the same time, water and oxygen in the environment easily enter the interior of the perovskite photovoltaic module, resulting in poor reliability of the perovskite photovoltaic module.

[0006] Currently, the coating quality can be improved by optimizing the coating process of the perovskite light absorption layer. For example, pre-coating can be increased or the cleaning frequency of the knife head can be increased to improve the coating quality. However, increasing pre-coating requires using a large amount of perovskite solution, which easily causes waste of perovskite solution, thereby increasing production cost. Increasing the cleaning frequency of the knife head requires reducing the production parameters of the coating equipment, which reduces the production efficiency of the coating equipment, thereby increasing production cost.

[0007] In addition, in order to optimize the laser process flow and reduce the laser scribing line width, the stability of the perovskite solar cell is easily reduced, thereby resulting in low yield of the perovskite photovoltaic module. UTILITY MODEL CONTENT

[0008] In order to solve the defects such as holes and dirt spots in the existing perovskite photovoltaic assembly, the uniformity of the appearance of the perovskite photovoltaic assembly is poor, and water and oxygen in the environment easily enter the inside of the perovskite solar cell, so that the reliability of the perovskite photovoltaic assembly in the storage and use process is poor, the utility model provides a perovskite photovoltaic assembly.

[0009] In order to achieve the above object, the utility model provides the following technical scheme:

[0010] The utility model proposes a kind of perovskite photovoltaic assembly, comprising: substrate, perovskite solar cell module, encapsulation structure, cover layer and protective layer;

[0011] The perovskite solar cell module is located substrate side;

[0012] The encapsulation structure is located the side of perovskite solar cell module away from substrate, and the encapsulation structure covers the upper surface and side surface of perovskite solar cell module;

[0013] The cover layer is located the side of encapsulation structure away from substrate;The orthographic projection of cover layer on substrate covers the orthographic projection of encapsulation structure on substrate;

[0014] The protective layer is located the side of cover layer away from encapsulation structure, and the protective layer is connected with cover layer.

[0015] Preferably, the encapsulation structure includes: first inorganic encapsulation layer;The first inorganic encapsulation layer is located the side of perovskite solar cell module away from substrate, and the first inorganic encapsulation layer covers the upper surface and side surface of perovskite solar cell module.

[0016] Preferably, the cover layer includes: first sub-covering part and second sub-covering part;

[0017] One end of the second sub-covering part is connected with the first sub-covering part, and the other end of the second sub-covering part is connected with the side of the substrate facing the perovskite solar cell module;

[0018] The side of the first sub-covering part facing the substrate is connected with the side of the first inorganic encapsulation layer away from the substrate, and the second sub-covering part surrounds the side of the first inorganic encapsulation layer.

[0019] The perovskite photovoltaic assembly further includes: a second inorganic encapsulation layer;The second inorganic encapsulation layer can cover the side of the first sub-covering part away from the substrate, and cover the side of the second sub-covering part.

[0020] Preferably, the packaging structure further comprises: an organic packaging layer and a third inorganic packaging layer.

[0021] The organic packaging layer is located between the first inorganic packaging layer and the third inorganic packaging layer; and a side of the third inorganic packaging layer facing away from the substrate is connected with the cover layer.

[0022] The orthogonal projection of the cover layer on the substrate covers the orthogonal projection of the third inorganic packaging layer on the substrate.

[0023] Preferably, the perovskite photovoltaic module further comprises: an encapsulating adhesive layer; and the encapsulating adhesive layer is located between the cover layer and the protective layer.

[0024] Preferably, the protective layer is any one of an ultrathin glass plate, a tempered glass plate, a stainless steel plate, a metal foil, a polyethylene terephthalate plate, a polyethylene naphthalate plate and a polyimide plate.

[0025] Preferably, the perovskite photovoltaic module further comprises: an encapsulating adhesive film; and the encapsulating adhesive film is arranged at the periphery of the side of the protective layer facing the substrate and is attached to the side of the substrate facing the perovskite solar cell module.

[0026] Preferably, the perovskite solar cell module comprises, in sequence, a first electrode layer, a first carrier transport layer, a perovskite layer, a second carrier transport layer and a second electrode layer.

[0027] Preferably, the cover layer is a layered black acrylic structure or a layered epoxy-based organic ink structure.

[0028] Preferably, the thickness of the cover layer ranges from 1 μm to 50 μm.

[0029] Compared with the prior art, the perovskite photovoltaic module has the following beneficial technical effects:

[0030] The perovskite photovoltaic module provided by the application has the following beneficial technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1A film layer structure schematic diagram of a perovskite photovoltaic module is provided in the utility model.

[0032] Figure 2 A film layer structure schematic diagram of another perovskite photovoltaic module is provided in the utility model.

[0033] Figure 3 A film layer structure schematic diagram of still another perovskite photovoltaic module is provided in the utility model.

[0034] Figure 4 A film layer structure schematic diagram of still another perovskite photovoltaic module is provided in the utility model.

[0035] Figure 5 A film layer structure schematic diagram of still another perovskite photovoltaic module is provided in the utility model.

[0036] Figure 6 A structure schematic diagram of another embodiment of a perovskite solar cell module in a perovskite photovoltaic module is provided in the utility model.

[0037] In the drawings: 1, base; 2, perovskite solar cell module; 3, covering layer; 4, encapsulation adhesive film; 5, encapsulation adhesive layer; 6, protective layer; 7, first inorganic encapsulation layer; 8, organic encapsulation layer; 9, third inorganic encapsulation layer; 10, first electrode layer; 11, perovskite layer; 12, second electrode layer; 13, first groove; 14, second groove; 15, third groove; 16, shielding block; 17, first carrier transport layer; 18, second carrier transport layer; 19, second inorganic encapsulation layer. DETAILED DESCRIPTION

[0038] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0039] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0040] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or it can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0043] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] The present application provides a perovskite photovoltaic module, which can include: a substrate 1, a perovskite solar cell module 2, an encapsulation structure, a cover layer 3 and a protective layer 6.

[0045] In the present application, the perovskite solar cell module 2 in the perovskite photovoltaic module can be located on one side of the substrate 1.

[0046] The encapsulation structure in the perovskite photovoltaic module can be located on the side of the perovskite solar cell module 2 away from the substrate 1, and can cover the upper surface and the side surface of the perovskite solar cell module 2. The encapsulation structure in the perovskite photovoltaic module can be completely attached to each surface of the perovskite solar cell module 2, so that the encapsulation structure can effectively encapsulate and protect the perovskite solar cell module 2, thereby preventing water and oxygen in the environment from corroding the perovskite solar cell module 2, and improving the stability of the perovskite photovoltaic module.

[0047] The covering layer 3 in the perovskite photovoltaic module can be located on the side of the encapsulation structure away from the substrate 1. The orthographic projection of the covering layer 3 on the substrate 1 can cover the orthographic projection of the encapsulation structure on the substrate 1, that is, the orthographic projection of the encapsulation structure on the substrate 1 can be located within the orthographic projection of the covering layer 3 on the substrate 1. In this way, the covering layer 3 can effectively cover the internal structure of the perovskite photovoltaic module, that is, the covering layer 3 can visually cover defects such as holes and dirt spots of the perovskite layer, thereby reducing the presence of defects and further improving the aesthetic effect of the perovskite photovoltaic module.

[0048] In this embodiment, the thickness of the covering layer 3 can range from 1 μm to 50 μm. Preferably, the thickness of the covering layer 3 can be 30 μm.

[0049] In this embodiment, the protective layer 6 in the perovskite photovoltaic module can be located on the side of the covering layer 3 away from the encapsulation structure, and the protective layer 6 can be connected to the covering layer 3. The internal structure of the perovskite photovoltaic module can be protected by the protective layer 6.

[0050] In this embodiment, the protective layer 6 can be any one of an ultrathin glass plate, a tempered glass plate, a stainless steel plate, a metal foil, a polyethylene terephthalate plate, a polyethylene naphthalate plate, and a polyimide plate.

[0051] It should be noted that the encapsulation structure in this embodiment can have multiple options. The following two possible implementation modes will be described as examples:

[0052] The first possible implementation mode is described with reference to Figure 1 , Figure 1 is a structural schematic diagram of a perovskite photovoltaic module provided by the present application. The encapsulation structure in the perovskite photovoltaic module can include a first inorganic encapsulation layer 7.

[0053] The first inorganic encapsulation layer 7 can be located on the side of the perovskite solar cell module 2 away from the substrate 1, and the first inorganic encapsulation layer 7 can cover the upper surface and the side surface of the perovskite solar cell module 2, that is, the first inorganic encapsulation layer 7 can be completely attached to each surface of the perovskite solar cell module 2, so as to reduce the probability of water and oxygen in the external environment invading the perovskite solar cell module 2 in the perovskite photovoltaic module.

[0054] In the embodiment, the covering layer 3 in the perovskite photovoltaic module can be located on the side of the first inorganic encapsulation layer 7 away from the substrate 1; wherein the orthographic projection of the covering layer 3 on the substrate 1 can cover the orthographic projection of the first inorganic encapsulation layer 7 on the substrate 1, that is, the orthographic projection of the first inorganic encapsulation layer 7 on the substrate 1 can be located within the orthographic projection of the covering layer 3 on the substrate 1.

[0055] It should be noted that, please refer to Figure 2 , Figure 2 is another structure diagram of a perovskite photovoltaic module provided by the present application. The covering layer 3 in the perovskite photovoltaic module can include: a first sub-covering part 31 and a second sub-covering part 32. One end of the second sub-covering part 32 can be connected with the first sub-covering part 31, and the other end of the second sub-covering part 32 can be connected with the side of the substrate 1 facing the perovskite solar cell module 2.

[0056] In the embodiment, the side of the first sub-covering part 31 in the covering layer 3 facing the substrate 1 can be connected with the side of the first inorganic encapsulation layer 7 away from the substrate 1, and the second sub-covering part 32 can surround the side surface of the first inorganic encapsulation layer 7. Through the cooperation of the first sub-covering part 31 and the second sub-covering part 32 in the covering layer 3, the upper surface and the side surface of the first inorganic encapsulation layer 7 can be covered, that is, the first sub-covering part 31 and the second sub-covering part 32 in the covering layer 3 can be completely attached to each side surface of the first inorganic encapsulation layer 7, further ensuring that the covering layer 3 can effectively cover the internal structure in the perovskite photovoltaic module, that is, the covering layer 3 can visually cover the defects such as holes and dirt spots of the perovskite layer in the perovskite photovoltaic module, so as to reduce the existence of defects and further improve the aesthetic effect of the perovskite photovoltaic module.

[0057] It should be noted that the material of the covering layer 3 can include black acrylic resin, or the material of the covering layer 3 can include organic ink of an epoxy system; wherein the solvent of the covering layer 3 can be propylene glycol methyl ether acetate (PMA for short), that is, the covering layer 3 can be a layered structure made of black acrylic resin, or the covering layer 3 can be a layered structure made of organic ink of an epoxy system.

[0058] In this embodiment, the covering layer 3 can be coated on the side of the first inorganic packaging layer 7 away from the substrate 1 by inkjet printing, spraying, roller coating, blade coating or spin coating, and then a thin film layer is formed by heating or ultraviolet exposure curing. The covering layer 3 can also provide flatness and compensate for internal defects of the first inorganic packaging layer 7 to reduce the risk of water and oxygen in the environment penetrating from the side of the perovskite photovoltaic module.

[0059] In this embodiment, as shown in Figure 2 The perovskite photovoltaic module can further include a second inorganic packaging layer 19. The second inorganic packaging layer 19 can cover the side of the first sub-covering part 31 away from the substrate 1 and cover the side of the second sub-covering part 32. The second inorganic packaging layer 19 can coat the outer sides of the first sub-covering part 31 and the second sub-covering part 32, thereby effectively protecting the perovskite solar cell module 2, prolonging the service life of the perovskite photovoltaic module, and improving the reliability of the perovskite photovoltaic module during storage and use.

[0060] It should be noted that the first inorganic packaging layer 7 and the second inorganic packaging layer 19 are composed of an oxide film or a nitride film, i.e., the first inorganic packaging layer 7 and the second inorganic packaging layer 19 are an inorganic material packaging film for isolating water and oxygen and other impurities. The specific oxide film can be any one of Al2O3, SiO2, HfO2, ZrO2, ZnO, Ta2O5, CeO2, La2O3, CoOx, MoO 3、 SrTiO, TiO2, SnO2, Nb2O5, Y2O3, MgO, BaTiO3, In2O3, NiO, V2O5, WO3. The nitride film can be any one of silicon nitride or aluminum nitride.

[0061] The second possible implementation mode is as follows: Figure 3 , Figure 3 is another structure diagram of a perovskite photovoltaic module provided by the present application. The packaging structure in the perovskite photovoltaic module can include a first inorganic packaging layer 7, an organic packaging layer 8 and a third inorganic packaging layer 9. The organic packaging layer 8 can be located between the first inorganic packaging layer 7 and the third inorganic packaging layer 9, and the side of the third inorganic packaging layer 9 away from the substrate 1 can be connected with the covering layer 3.

[0062] In this embodiment, the cooperation of the first inorganic packaging layer 7, the organic packaging layer 8 and the third inorganic packaging layer 9 can effectively protect the perovskite solar cell module 2, thereby preventing water and oxygen in the environment from corroding the perovskite solar cell module 2, and improving the stability of the perovskite photovoltaic module.

[0063] The third inorganic encapsulation layer 9 can be an encapsulation film made of inorganic material for isolating impurities such as water and oxygen. The oxide film can be any one of Al2O3, SiO2, HfO2, ZrO2, ZnO, Ta2O5, CeO2, La2O3, CoOx, MoO 3、 SrTiO, TiO2, SnO2, Nb2O5, Y2O3, MgO, BaTiO3, In2O3, NiO, V2O5, WO3; the nitride film can be any one of silicon nitride or aluminum nitride; and the organic encapsulation layer 8 can be made of acrylic resin, epoxy acrylic resin or epoxy resin, i.e., the organic encapsulation layer 8 can be an encapsulation film made of organic material for isolating impurities such as water and oxygen.

[0064] In the embodiments of the present application, the first inorganic encapsulation layer 7 and the third inorganic encapsulation layer 9 are made by any one or a combination of chemical vapor deposition, plasma enhanced chemical vapor deposition, sputtering or sublimation; and the organic encapsulation layer 8 is a polymer film formed by ink composition coating on the substrate by inkjet printing, spraying, roller coating, blade coating or spin coating, and then by heating or ultraviolet exposure curing.

[0065] In the embodiments of the present application, the covering layer 3 in the perovskite photovoltaic module can be located on the side of the third inorganic encapsulation layer 9 away from the organic encapsulation layer 8; wherein the orthographic projection of the covering layer 3 on the substrate 1 can cover the orthographic projection of the third inorganic encapsulation layer 9 on the substrate 1, i.e., the orthographic projection of the third inorganic encapsulation layer 9 can be located within the orthographic projection of the organic encapsulation layer 8 on the substrate 1.

[0066] In the embodiments of the present application, please refer to Figure 3 and Figure 4 The perovskite photovoltaic module can further include an encapsulation adhesive layer 5, which can be located between the covering layer 3 and the protective layer 6, and the orthographic projection of the encapsulation adhesive layer 5 on the substrate 1 is located within the orthographic projection of the covering layer 3 on the substrate 1. The encapsulation adhesive layer 5 can effectively isolate water and oxygen, dust and other pollutants in the environment from entering the perovskite photovoltaic module, thereby protecting the perovskite photovoltaic module from damage. Exemplarily, the encapsulation adhesive layer 5 can be a POE (polyolefin) film.

[0067] In the present application, the perovskite photovoltaic module can further include an encapsulation adhesive film 4, which is arranged at the periphery of the side of the protective layer 6 facing the substrate 1 and adheres to the side of the substrate 1 facing the perovskite solar cell module 2. The encapsulation adhesive film 4 can firmly bond the substrate 1 and the protective layer 6 together, thereby forming a closed barrier space for blocking water and oxygen from corroding the perovskite photovoltaic module. Exemplarily, the encapsulation adhesive film 4 can be butyl adhesive.

[0068] In the embodiments of the present application, please refer toFigure 4 The perovskite solar cell module 2 in the perovskite photovoltaic module can include, in sequence, a first electrode layer 10, a first carrier transport layer 17, a perovskite layer 11, a second carrier transport layer 18, and a second electrode layer 12.

[0069] It should be noted that if the first carrier transport layer 17 is one of a hole transport layer and an electron transport layer, then the second carrier transport layer 18 is the other of the hole transport layer and the electron transport layer, and the embodiments of the present application do not limit this, and the following is an exemplary description taken with the first carrier transport layer 17 being a hole transport layer and the second carrier transport layer 18 being an electron transport layer.

[0070] The material of the first electrode layer 10 is not particularly limited and can be a material known to those skilled in the art or a combination thereof, for example, can be any one or more of indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), indium-doped zinc oxide (IZO), fluorine-doped tin oxide (FTO), indium tungsten oxide (IWO), indium cerium oxide (ICO), or Ag nanowire, and the thickness of the first electrode layer 10 can be 300 nm.

[0071] Specifically, the material of the first carrier transport layer 17 is not particularly limited and can be a material known to those skilled in the art or a combination thereof, for example, can be any one or a combination of at least two of NiOx, MoS, MoO, CuS, CuSCN, PTAA, PEDOT, or Spiro-MeOTAD, preferably, the material of the first carrier transport layer 17 can include a combination of NiOx and MoS.

[0072] Specifically, the material of the perovskite layer 11 is not particularly limited and can be a material known to those skilled in the art or a combination thereof, for example, can be any one or a combination of at least two of CsFAPbX3, CsMAPbX3, CsFAMAPbX3, CsPbX3, MAPbX3, or FAPbX3; wherein X includes any one or a combination of at least two of Cl, Br, or I.

[0073] Specifically, the material of the second carrier transport layer 18 is not particularly limited and can be a material known to those skilled in the art or a combination thereof, for example, can be any one or a combination of at least two of SnO2, TiO2, WO3, Nb2O5, C60, or PCBM.

[0074] Specifically, the material of the second electrode layer 12 is not particularly limited and can be a material known to those skilled in the art or a combination thereof, for example, can be any one or a combination of at least two of Au, Ag, Cu, Al, Cr, Mo, carbon, fluorine-doped tin oxide, indium-doped tin oxide, aluminum-doped zinc oxide, boron-doped zinc oxide, or aluminum-doped tin oxide.

[0075] Another embodiment of a perovskite photovoltaic module is provided in the present application, please refer to Figure 5 The perovskite photovoltaic module can include: a substrate 1, a perovskite solar cell module 2, a covering layer 3, an encapsulant layer 5, an encapsulant film 4, and a protective layer 6.

[0076] The covering layer 3 in the perovskite photovoltaic module can cover the upper surface and the side surface of the perovskite solar cell module 2, and the covering layer 3 can be completely attached to each surface of the perovskite solar cell module 2 to visually cover the defects such as holes and dirt spots of the perovskite layer in the perovskite solar cell 2, so as to reduce the presence of defects and further improve the aesthetic effect of the perovskite photovoltaic module.

[0077] It should be noted that since the material of the covering layer 3 can be black acrylic resin, or the material of the covering layer 3 can be organic ink of an epoxy system, the covering layer 3 can also have a certain encapsulation and protection effect on the perovskite solar cell 2 in the perovskite photovoltaic module, so as to prevent water and oxygen in the environment from corroding the perovskite solar cell module 2.

[0078] Wherein, other specific structures and functions in the perovskite photovoltaic module please refer to the above content, here will not be repeated.

[0079] Another perovskite photovoltaic module is provided in the present application, please refer to Figure 6 The perovskite photovoltaic module can include: a first electrode layer 10, a first carrier transport layer 17, a perovskite layer 11, a second carrier transport layer 18, and a second electrode layer 12, which are sequentially stacked, and the first electrode layer 10 is closer to the substrate 1 than the second electrode layer 12.

[0080] Among them, the perovskite solar cell module 2 in the perovskite photovoltaic module can be separated into a plurality of sub-cell structures by a plurality of grooves, and the plurality of grooves include a first groove 13, a second groove 14, and a third groove 15 arranged in parallel.

[0081] Specifically, the perovskite solar cell module 2 in the perovskite photovoltaic module can be separated into a plurality of sub-cell structures by three laser lines.

[0082] After the first electrode layer 10 is prepared on one side of the substrate 1, and before the first carrier layer 17 is prepared, a first laser line can be drawn to form a plurality of first grooves 13 penetrating the first electrode layer 10, and the plurality of first grooves 13 can be equidistantly and parallelly arranged.

[0083] After the first carrier layer 17, the perovskite layer 11 and the second carrier layer 18 are prepared in turn on the side of the first electrode layer 10 away from the substrate 1, and before the second electrode layer 12 is prepared, a second laser scribing can be performed to form a plurality of second grooves 14 penetrating through the second carrier layer 18, the perovskite layer 11 and the first carrier layer 17, and the plurality of second grooves 14 can be equidistantly and parallelly arranged.

[0084] After the second electrode layer 12 is prepared on the side of the second carrier layer 18 away from the perovskite layer 11, a third laser scribing can be performed to form a plurality of third grooves 15 penetrating through the second electrode layer 12, the second carrier layer 18, the perovskite layer 11 and the first carrier layer 17, and the plurality of third grooves 15 can be equidistantly and parallelly arranged.

[0085] In the present application, the perovskite photovoltaic module can further include a covering part 16. Wherein, a part of the covering part 16 can be located in the third groove 15 and tightly fit with the inner wall of the third groove 15. It should be noted that the material of the covering part 16 can be the same as that of the covering layer 3.

[0086] Here, by setting the covering part 16 in the perovskite photovoltaic module, the laser scribing lines caused by the laser scribing process and the dirt left by the laser edge cleaning can be covered, so that the appearance uniformity and the aesthetic appearance of the perovskite photovoltaic module can be improved.

[0087] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0088] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment exhibits every characteristic or implements every aspect described in the specification. The description herein is intended for clarity of understanding only and is not intended to limit the scope of the application nor require that one characteristic, aspect, embodiment or embodiment be present or necessary for practical implementation of the application. In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand. The above is only to illustrate the technical idea of the present application, and cannot limit the protection scope of the present application, and any modification made on the basis of the technical solution according to the technical idea of the present application falls within the protection scope of the claims of the present application.

Claims

1. A perovskite photovoltaic module, characterized in that, include: The substrate (1), the perovskite solar cell module (2), the encapsulation structure, the cover layer (3), and the protective layer (6); The perovskite solar cell module (2) is located on one side of the substrate (1); The encapsulation structure is located on the side of the perovskite solar cell module (2) away from the substrate (1), and the encapsulation structure covers the upper surface and side surface of the perovskite solar cell module (2). The cover layer (3) is located on the side of the encapsulation structure opposite to the substrate (1); the orthographic projection of the cover layer (3) on the substrate (1) covers the orthographic projection of the encapsulation structure on the substrate (1); The protective layer (6) is located on the side of the cover layer (3) away from the encapsulation structure, and the protective layer (6) is connected to the cover layer (3).

2. The perovskite photovoltaic module according to claim 1, characterized in that, The encapsulation structure includes: a first inorganic encapsulation layer (7); the first inorganic encapsulation layer (7) is located on the side of the perovskite solar cell module (2) away from the substrate (1), and the first inorganic encapsulation layer (7) covers the upper surface and side surface of the perovskite solar cell module (2).

3. A perovskite photovoltaic module according to claim 2, characterized in that, The covering layer (3) includes: a first sub-covering part (31) and a second sub-covering part (32); One end of the second sub-covering part (32) is connected to the first sub-covering part (31), and the other end of the second sub-covering part (32) is connected to the side of the substrate (1) facing the perovskite solar cell module (2). The first sub-covering portion (31) is connected to the side of the first inorganic encapsulation layer (7) away from the substrate (1) on the side facing the substrate (1), and the second sub-covering portion (32) surrounds the side of the first inorganic encapsulation layer (7). The perovskite photovoltaic module further includes: a second inorganic encapsulation layer (19); the second inorganic encapsulation layer (19) can cover the side of the first sub-shading part (31) away from the substrate (1) and cover the side of the second sub-shading part (32).

4. A perovskite photovoltaic module according to claim 2, characterized in that, The encapsulation structure further includes: an organic encapsulation layer (8) and a third inorganic encapsulation layer (9). The organic encapsulation layer (8) is located between the first inorganic encapsulation layer (7) and the third inorganic encapsulation layer (9); the side of the third inorganic encapsulation layer (9) facing away from the substrate (1) is connected to the cover layer (3); The orthographic projection of the cover layer (3) on the substrate (1) covers the orthographic projection of the third inorganic encapsulation layer (9) on the substrate (1).

5. A perovskite photovoltaic module according to claim 1, characterized in that, The perovskite photovoltaic module further includes an encapsulating adhesive layer (5); the encapsulating adhesive layer (5) is located between the covering layer (3) and the protective layer (6).

6. A perovskite photovoltaic module according to claim 1, characterized in that, The protective layer (6) is any one of ultra-thin glass plate, tempered glass plate, stainless steel plate, metal foil, polyethylene terephthalate plate, polyethylene naphthalate plate and polyimide plate.

7. A perovskite photovoltaic module according to claim 1, characterized in that, The perovskite photovoltaic module further includes: an encapsulating film (4); the encapsulating film (4) is disposed on the periphery of the protective layer (6) facing the substrate (1) and is attached to the side of the substrate (1) facing the perovskite solar cell module (2).

8. A perovskite photovoltaic module according to claim 1, characterized in that, The perovskite solar cell module (2) includes a first electrode layer (10), a first carrier transport layer (17), a perovskite layer (11), a second carrier transport layer (18), and a second electrode layer (12) stacked in sequence.

9. A perovskite photovoltaic module according to claim 1, characterized in that, The covering layer is a layered black acrylic structure or a layered epoxy system organic ink structure.

10. A perovskite photovoltaic module according to claim 1, characterized in that, The thickness of the covering layer (3) ranges from 1 μm to 50 μm.

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