Perovskite solar cell
By introducing a micron-scale mesh conductive layer and a transparent conductive adhesive filler layer into the conductive tape, the transparency and stability of the conductive tape are achieved, solving the appearance problem of conductive tape in building-integrated photovoltaics applications, and improving the electrical performance and reliability of perovskite solar cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2026-03-31
AI Technical Summary
Existing conductive tapes are opaque in the field of building-integrated photovoltaics, which affects the appearance. At the same time, they are prone to decomposition or phase change of the perovskite absorber layer during high-temperature and high-pressure lamination and encapsulation, which affects the electrical performance and reliability.
The conductive tape uses a substrate layer with a micron-scale grid conductive layer and a transparent conductive adhesive filling layer. The grid conductive layer has a grid structure, and the conductive adhesive filling layer is made of transparent material to avoid direct contact with the battery layer, thus ensuring transparency and stability.
This solves the problem of opaque conductive tape, improves the application of perovskite solar cells in building-integrated photovoltaics, and enhances electrical performance and reliability by preventing contact between conductive tape and cell layers, thus preventing decomposition or phase change.
Smart Images
Figure CN224069065U_ABST
Abstract
Description
[0001] The application is a divisional application of application No. 202420109196.7, with the application date of January 16, 2024, and the title of a conductive adhesive tape and perovskite solar cell. TECHNICAL FIELD
[0002] The utility model relates to photovoltaic technology field, concretely relates to a conductive adhesive tape and perovskite solar cell. BACKGROUND
[0003] The perovskite solar cell generally includes a substrate layer, a transparent conductive layer, a hole transport layer, a perovskite absorption layer, an electron transport layer and a metal electrode layer which are sequentially stacked. By means of the conventional P1 (cutting the transparent conductive layer), P2 (cutting the perovskite absorption layer) and P3 (cutting the metal electrode layer) laser scribing, the method of converting a large-area perovskite solar cell into multiple small-area sub-cells is realized to reduce the overall module current and improve the voltage. The existing perovskite solar cell realizes the extraction of current by combining the conductive adhesive tape and the tinned copper tape. Since the tensile strength of the conductive adhesive tape is limited and it is not easy to be welded with the junction box, the conductive adhesive tape is attached to the two edge sub-cells of the perovskite solar cell, and the tinned copper tape is used to realize the extraction of current. Before the conductive adhesive tape is attached to the two edge sub-cells of the perovskite solar cell, an acrylic ester material with conductive function needs to be applied to realize the dual functions of adhesion and conductivity, so that the conductive adhesive tape can be conveniently attached and fixed.
[0004] However, the current conductive adhesive tape is opaque in appearance, which limits the application of the perovskite solar cell in the field of building integrated photovoltaics. Secondly, the material of the perovskite absorption layer is a kind of unstable material. The additives and water vapor in the conductive adhesive tape are easily released and diffused to the perovskite absorption layer during high-temperature and high-pressure lamination packaging, which reacts with the perovskite absorption layer to cause decomposition or phase change of the perovskite absorption layer, seriously affecting the electrical performance and long-term reliability of the perovskite solar cell module.
[0005] Therefore, it is urgent to provide a conductive adhesive tape and apply it to the perovskite solar cell to solve the above problems. CONTENT OF THE UTILITY MODEL
[0006] Therefore, the technical problem to be solved by the utility model is to overcome the defects of poor electrical performance and reliability of the perovskite solar cell caused by the application of the conductive adhesive tape in the field of building integrated photovoltaics and in the perovskite solar cell in the prior art, so as to provide a conductive adhesive tape and perovskite solar cell.
[0007] The utility model provides a kind of conductive adhesive tape, comprising: substrate layer and the grid conductive layer and conductive adhesive filling layer located in the one side surface of the substrate layer, the grid conductive layer is arranged in the surface of the substrate layer with grid structure, and the conductive adhesive filling layer fills the mesh hole of the grid structure.
[0008] Optionally, the grid conductive layer includes a plurality of mesh holes, and the cross-sectional dimension of a single mesh hole is 0.0004mm 2 -1mm 2 ; the cross-sectional dimension of the mesh hole line for forming a single mesh hole in the grid conductive layer is 0.0004mm 2 -0.04mm 2 .
[0009] Optionally, the thickness of the substrate layer is 10-100 μm; and the thickness of the conductive adhesive filling layer is 50-200 μm.
[0010] Optionally, the substrate layer includes a polyethylene terephthalate layer or a polyethylene naphthalate layer; the grid conductive layer includes a silver conductive layer; and the conductive adhesive filling layer includes a blend mixture layer of acrylic ester and silver, a blend mixture layer of transparent silicone and silver, or a blend mixture layer of transparent epoxy adhesive and silver.
[0011] The utility model also provides a perovskite solar cell, comprising the conductive adhesive tape.
[0012] Optionally, the perovskite solar cell further comprises a substrate layer; one side surface of the substrate layer has a first region, a second region and a third region; the third region is located between the first region and the second region; a transparent conductive layer; the transparent conductive layer is located at least in the third region and extends to the first region and the second region; a cell layer; the cell layer is located on the side surface of the transparent conductive layer in the third region away from the substrate layer; the conductive adhesive tape is arranged at least on the side of the transparent conductive layer in the first region and the second region away from the substrate layer, and the conductive adhesive tape is arranged spaced apart from the cell layer.
[0013] Optionally, the width of the conductive adhesive tape is less than or equal to the width of the transparent conductive layer in any of the first region and the second region; and the width of the conductive adhesive tape is 3-18 mm.
[0014] Optionally, further comprising: a positive electrode lead-out end and a negative electrode lead-out end, the positive electrode lead-out end and the negative electrode lead-out end are oppositely arranged; the positive electrode lead-out end extends from the extension part of the conductive tape in the first area to one end of the second area, and the negative electrode lead-out end extends from the extension part of the conductive tape in the second area to one end of the first area; the conductive tape comprises a covering part and an extension part, the covering part covers the transparent conductive layer; the extension part extends from one end of the covering part to the surface of part of the substrate layer along the extension direction of the covering part; the extension part of the conductive tape in the first area is used to bond and fix the positive electrode lead-out end on the substrate layer; the extension part of the conductive tape in the second area is used to bond and fix the negative electrode lead-out end on the substrate layer. It should be noted that those skilled in the art can understand that the conductive tapes in the first area and the second area must be in an open circuit state, that is, the transparent conductive layer, the conductive tape and the lead-out end cannot cause short circuit of the battery, for example, the area between the positive electrode lead-out end and the negative electrode lead-out end does not cover the transparent conductive layer, and the transparent conductive layer in the corresponding area is generally laser engraved to directly expose the non-conductive substrate layer, and the extension part and the positive electrode lead-out end and the negative electrode lead-out end can be located on one side surface of the substrate layer.
[0015] Optionally, the first area and the second area are both in the shape of "L"; the extension part and the covering part form an included angle of 90°, the extension part of the conductive tape in the first area and the extension part of the conductive tape in the second area extend towards each other; the extension part of the conductive tape in the first area and the extension part of the conductive tape in the second area have an opening therebetween.
[0016] Optionally, further comprising: an electrode layer arranged on the side surface of the transparent conductive layer away from the substrate layer; the conductive tape is arranged on the side surface of the electrode layer away from the substrate layer in the first area and the second area; the grid conductive layer and the conductive glue filling layer in the conductive tape are attached to the surface of the electrode layer.
[0017] The beneficial effects of the utility model lie in:
[0018] The utility model provides a conductive tape, through setting up micron level grid conductive layer on one side surface of substrate layer, make that naked eye cannot identify the existence of grid line, second, set up conductive glue filling layer in the mesh of grid structure, conductive glue filling layer adopts transparent material, because conductive glue filling layer self characteristic, conductive glue filling layer is transparent, therefore the whole of conductive tape adopts transparent high polymer film (substrate) + micron level grid line (grid conductive layer) + transparent conductive glue (conductive glue filling layer), solved the appearance problem of conventional conductive tape because of non - transparent, thereby be favorable to the application of perovskite solar cell in the field of building integrated photovoltaics.
[0019] Further, the conductive adhesive tape is applied to the perovskite solar cell, the perovskite solar cell, the conductive adhesive tape; further comprising: a substrate layer; one side surface of the substrate layer has a first area, a second area and a third area; the third area is located between the first area and the second area; a transparent conductive layer; the transparent conductive layer is located at least in the third area, and extends to the first area and the second area; a cell layer; the cell layer is located on the side surface of the transparent conductive layer of the third area away from the substrate layer; the conductive adhesive tape is arranged on the side of the transparent conductive layer in the first area and the second area away from the substrate layer, and the conductive adhesive tape is arranged apart from the cell layer. Since the cell layer is located on the side surface of the transparent conductive layer of the third area away from the substrate layer, the conductive adhesive tape is arranged on the side of the transparent conductive layer in the first area and the second area away from the substrate layer, so that the decomposition or phase change of part of the cell layer caused by the conductive adhesive tape during lamination packaging is avoided; secondly, the conductive adhesive tape is arranged apart from the cell layer, when the perovskite solar cell works outdoors for a long time, the long-term risk that the volatile conductive adhesive tape diffuses transversely to the cell layer to cause the decomposition or phase change of part of the cell layer is eliminated, thereby improving the electrical performance and reliability of the perovskite solar cell. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0021] Figure 1 It is a structure schematic view of the conductive adhesive tape in the embodiment of the present application.
[0022] Figure 2 It is a structure schematic view of the perovskite solar cell in the embodiment of the present application.
[0023] Figure 3 It is a sectional view of the perovskite solar cell in the embodiment of the present application.
[0024] Figure 4 And Figure 5 They are both schematic views of the transparent conductive layer on one side surface of the substrate layer in the embodiment of the present application.
[0025] Reference signs:
[0026] 1-substrate layer; 2-transparent conductive layer; 3-cell layer;
[0027] 4 - conductive adhesive tape; 41 - substrate layer; 42 - grid conductive layer; 43 - conductive adhesive filling layer;
[0028] 5 - lead; 51 - positive lead; 52 - negative lead;
[0029] 6 - electrode layer;
[0030] A - first area; B - second area; C - third area;
[0031] P1 - first laser scribing position, P2 - second laser scribing position, P3 - third laser scribing position. DETAILED DESCRIPTION
[0032] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0033] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0035] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.
[0036] REFERENCE Figure 1The embodiment provides a conductive adhesive tape 4, which comprises a substrate layer 41 and a grid conductive layer 42 and a conductive adhesive filling layer 43 located on one side surface of the substrate layer 41, the grid conductive layer 42 is arranged on the surface of the substrate layer 41 in a grid structure, and the conductive adhesive filling layer 43 fills the mesh holes of the grid structure. Specifically, the conductive adhesive filling layer 43 of the conductive adhesive tape 4 is arranged towards the transparent conductive layer. Compared with the conductive adhesive tape using the tinned copper tape in the prior art, the structure of the conductive adhesive tape 4 is more stable, because the grid conductive layer 42 is filled with conductive adhesive, the adhesion between the grid conductive layer 42 and the substrate layer 41 is better, and the adhesion between the tinned copper tape and the substrate layer 41 is more firm, and meanwhile, the new structure is also beneficial to enhancing the adhesion between the grid conductive layer 42 and the photovoltaic module.
[0037] By arranging the micron-level grid conductive layer 42 on one side surface of the substrate layer 41, the existence of the grid lines cannot be identified by naked eyes; secondly, the conductive adhesive filling layer 43 is arranged in the mesh holes of the grid structure, the conductive adhesive filling layer 43 adopts a transparent material, and because of the self characteristics of the conductive adhesive filling layer 43, the conductive adhesive filling layer 43 is transparent, therefore, the whole conductive adhesive tape 4 adopts transparent polymer film (substrate) + micron-level grid lines (grid conductive layer) + transparent conductive adhesive (conductive adhesive filling layer), the appearance problem caused by the opacity of the conventional conductive adhesive tape is solved, thereby being beneficial to the application of the perovskite solar cell in the photovoltaic building integration field.
[0038] It should be noted that the steps for forming the conductive adhesive tape 4 in the application include: forming the grid conductive layer 42 on one side surface of the substrate layer 41 by printing, and the grid conductive layer has a plurality of mesh holes; and filling the mesh holes by printing to form the conductive adhesive filling layer 43. The grid conductive layer 42 includes a plurality of mesh holes, and the cross-sectional size of a single mesh hole is 0.0004mm 2 -1mm 2 , for example, 0.0004mm 2 , 0.001mm 2 , 0.02mm 2 , 0.078mm 2 , 0.9mm 2 or 1mm 2 . It can be understood that the cross-sectional size of the conductive adhesive filling layer 43 after filling the conductive adhesive filling layer 43 is equivalent to that of a single mesh hole, which is 0.0004mm 2 -1mm 2 . The cross-sectional size of the mesh hole line for forming a single mesh hole in the grid conductive layer is 0.0004mm 2 -0.04mm 2 , for example, 0.0004mm 2 , 0.005mm2 0.008 mm 2 0.01 mm 2 0.035 mm 2 or 0.04 mm 2 The mesh conductive layer 42 is transparent in appearance, because the mesh lines used to form the individual meshes in the mesh conductive layer 42 are only micron-level metal mesh wires, and the existence of the mesh lines cannot be identified by naked eyes.
[0039] In one embodiment, the conductive adhesive filling layer 43 has a thickness of 50-200 μm, for example, 50 μm, 100 μm, 150 μm or 200 μm.
[0040] In one embodiment, the substrate layer 41 has a thickness of 10-100 μm, for example, 10 μm, 20 μm, 50 μm, 80 μm or 100 μm. If the thickness of the substrate layer is too large, material waste is caused; if the thickness of the substrate layer is too small, the mesh conductive layer 42 and the conductive adhesive filling layer 43 cannot be supported.
[0041] In one embodiment, the substrate layer 41 comprises a polyethylene terephthalate layer or a polyethylene naphthalate layer; the mesh conductive layer 42 comprises a silver conductive layer; and the material of the conductive adhesive filling layer 43 comprises a blend of acrylate and silver, a blend of transparent silicone and silver or a blend of transparent epoxy and silver. The conductive adhesive filling layer 43 is added with metal powder (for example, silver powder) which has good conductivity and is chemically inert to present the conductive property. Due to the property of the material of the conductive adhesive filling layer 43, the conductive adhesive filling layer 43 is transparent in appearance. The material of the substrate layer 41 is also transparent, so that the conductive adhesive tape 4 is transparent in appearance as a whole. The conductive adhesive tape 4 described above solves the appearance problem caused by the opacity of conventional conductive adhesive tapes, thereby facilitating the application of the perovskite solar cell in the field of building integrated photovoltaics.
[0042] In combination with reference to Figure 2 and Figure 3The embodiment provides a perovskite solar cell and the conductive adhesive tape 4. The perovskite solar cell further comprises a substrate layer 1; one side surface of the substrate layer 1 has a first area A, a second area B and a third area C; the third area C is located between the first area A and the second area B; a transparent conductive layer 2; the transparent conductive layer 2 is located at least in the third area C and extends to the first area A and the second area B; a cell layer 3; the cell layer 3 is located on one side surface of the transparent conductive layer 2 in the third area C and is away from the substrate layer 1; the conductive adhesive tape 4 is arranged at least on one side of the transparent conductive layer 2 in the first area A and the second area B and is away from the substrate layer 1, and the conductive adhesive tape 4 is arranged separately from the cell layer 3.
[0043] In the embodiment, the cell layer 3 is located on one side surface of the transparent conductive layer 2 in the third area C and is away from the substrate layer 1, the conductive adhesive tape 4 is arranged on one side of the transparent conductive layer 2 in the first area A and the second area B and is away from the substrate layer 1, so that the conductive adhesive tape is not arranged on the cell layer, and decomposition or phase change of part of the cell layer caused by the conductive adhesive tape during lamination and packaging is avoided; secondly, the conductive adhesive tape 4 is arranged separately from the cell layer 3, so that the long-term risk of decomposition or phase change of part of the cell layer caused by transverse diffusion of the conductive adhesive tape to the cell layer during long-term outdoor work of the perovskite solar cell is eliminated, and the electrical performance and reliability of the perovskite solar cell are improved.
[0044] It should be noted that the specific structure of the cell layer 3 is not limited in the disclosure, and can be set according to actual needs by using existing technologies, for example, generally can comprise a hole transport layer (not shown in the figure) located on one side surface of the transparent conductive layer 2 and away from the substrate layer, a perovskite absorption layer (not shown in the figure) located on one side surface of the hole transport layer and away from the substrate layer, and an electron transport layer (not shown in the figure) located on one side surface of the perovskite absorption layer and away from the substrate layer.
[0045] Continuing to refer to Figure 2 The perovskite solar cell further comprises an electrode layer 6 located on one side surface of the transparent conductive layer 2 and away from the substrate layer 1; the conductive adhesive tape 4 is arranged on one side surface of the electrode layer 6 in the first area A and the second area B and away from the substrate layer 1; and the grid conductive layer 42 and the conductive adhesive filling layer 43 are attached to the surface of the electrode layer 6. Compared with the scheme of directly attaching the conductive adhesive tape to the transparent conductive layer, the electrode layer arranged between the two can reduce the series resistance of the assembly and is conducive to the transmission of charges. Moreover, in the process aspect, the electrode layer covering the first area A and the second area B can be prepared at the same time as the electrode layer covering the cell layer 3, and no additional process is needed.
[0046] It can be known that the forming steps of the perovskite solar cell generally include: forming a transparent conductive layer 2 on one side surface of a substrate layer 1; performing first laser scribing on the transparent conductive layer 2 (for reference Figure 4 ); forming a cell layer 3 on the side surface of the transparent conductive layer 2 away from the substrate layer 1; performing second laser scribing on the cell layer 3; forming an electrode layer 6 on the side surface of the cell layer 3 away from the substrate layer 1; and performing third laser scribing on the electrode layer 6. After the third laser scribing, a plurality of solar cell pieces are formed. Figure 2 In the figure, P1 represents the position of the first laser scribing, P2 represents the position of the second laser scribing, and P3 represents the position of the third laser scribing.
[0047] In one embodiment, in the process of performing the second laser scribing on the cell layer 3, the cell layer on the side surface of the transparent conductive layer 2 away from the substrate layer 1 in the first region A and the second region B is removed, and then the electrode layer is deposited, so that the conductive adhesive tape 4 formed subsequently is in contact with the electrode layer 6, so as to improve the reliability of the perovskite solar cell.
[0048] In another embodiment, after the third laser scribing on the electrode layer 6, the cell layer 3 on the side surface of the transparent conductive layer 2 away from the substrate layer 1 in the first region A and the second region B is removed (not shown in the figure).
[0049] The forming steps of the perovskite solar cell further include: performing edge cleaning treatment on the perovskite solar cell (for reference Figure 5 ).
[0050] Continuing to refer to Figure 1 , the perovskite solar cell further includes: a lead-out end 5; the lead-out end 5 is arranged to extend along a direction parallel to the series connection direction of the solar cell pieces in the cell layer; the conductive adhesive tape 4 includes a covering part and an extending part, the covering part covers the transparent conductive layer 2; the extending part extends from one end of the covering part to the surface of part of the substrate layer in the extending direction of the covering part; and the extending part of the conductive adhesive tape 4 bonds and fixes the lead-out end 5 to the substrate layer 1.
[0051] It should be noted that the series connection direction of the solar cell pieces in the cell layer 3 is perpendicular to the length direction of the solar cell pieces.
[0052] In one embodiment, the width of the conductive adhesive tape 4 is less than or equal to the width of the transparent conductive layer 2 in either of the first region and the second region. That is, the width of the covering part and the width of the extending part of the conductive adhesive tape 4 are both less than or equal to the width of the transparent conductive layer 2 in the first region, and both are less than or equal to the width of the transparent conductive layer 2 in the second region. Figure 5 W represents the width of the extending part of the conductive adhesive tape 4; the width direction of the extending part of the conductive adhesive tape 4 is perpendicular to the series direction of the solar cell piece; the length of the extending part extends parallel to the series direction of the solar cell piece.
[0053] It can be understood that the conductive adhesive tape 4 with appropriate size is selected and laid according to the width of the transparent conductive layer 2 in the first region A and the second region B delineated by actual production. In one embodiment, the width of the conductive adhesive tape 4 can be 3-18 mm, for example, 3 mm, 5 mm, 10 mm, 14 mm, 17 mm or 18 mm.
[0054] Specifically, in one embodiment, the first region A and the second region B are both linear (not shown in the figure); the extending part and the covering part form a linear structure. The lead-out end 5 includes a positive lead-out end 51 and a negative lead-out end 52, which are oppositely arranged and extend from the solar cell pieces at both ends of the series direction of the solar cell piece to the solar cell pieces in the middle.
[0055] It should be noted that those skilled in the art can understand that the conductive adhesive tapes between the first region and the second region, and the positive lead-out end and the negative lead-out end must be in an open circuit state, that is, the transparent conductive layer, the conductive adhesive tape and the lead-out end cannot cause short circuit of the battery. For example, the area between the positive lead-out end and the negative lead-out end does not cover the transparent conductive layer, and the transparent conductive layer in the corresponding area is generally laser-engraved to directly expose the non-conductive substrate layer, and the extending part and the positive lead-out end and the negative lead-out end can be located on one side surface of the substrate layer.
[0056] In another embodiment, referring to Figure 2The first area A and the second area B are both in the shape of "L"; the extension part and the covering part form an angle of 90°, the extension part of the conductive tape 4 in the first area A extends towards the extension part of the conductive tape 4 in the second area B; and the extension part of the conductive tape 4 in the first area A and the extension part of the conductive tape 4 in the second area B are spaced apart. The lead-out end 5 includes a positive lead-out end 51 and a negative lead-out end 52, which are oppositely arranged, the positive lead-out end 51 extends from the extension part of the conductive tape 4 in the first area A towards one end of the second area B, and the negative lead-out end 52 extends from the extension part of the conductive tape 4 in the second area B towards one end of the first area A. By using the above arrangement, the extension part of the conductive tape 4 in the first area A extends towards the extension part of the conductive tape 4 in the second area B, which can shorten the distance between the lead-out ends in the subsequent formation, facilitate the convergence of the conductive tape and the lead-out end for connecting the external circuit, and facilitate packaging.
[0057] In one embodiment, the transparent conductive layer 2 extends to the part of the first area A and the part of the second area B, and also extends to the side of the third area C along the first area A or the second area B, and the part in the first area A and the part in the second area B are spaced apart, and are spaced apart from the part in the third area C; the extension part of the conductive tape 4 also covers the part of the transparent conductive layer 2 in the first area A on the side of the third area C and the part of the transparent conductive layer 2 in the second area B on the side of the third area C; and the conductive tape 4 adheres and fixes the lead-out end to the surface of the transparent conductive layer 2. Specifically, the extension part of the conductive tape 4 in the first area A adheres and fixes the positive lead-out end 51 to the substrate layer 1; and the extension part of the conductive tape 4 in the second area B adheres and fixes the negative lead-out end 52 to the substrate layer 1.
[0058] It should be noted that the conductive tape 4 in the perovskite solar cell has the same function as the general bus bar, and the conductive tape 4 of the present application also has the function of adhesion, which can adhere and fix the lead-out end to the substrate layer 1; in addition, the lead-out end 5 can be made of the same material as the general bus bar.
[0059] In one embodiment, the material of the substrate layer 1 includes glass, coated glass, polyethylene terephthalate or polyethylene naphthalate; and the material of the transparent conductive layer 2 includes indium tin oxide, fluorine-doped tin oxide, aluminum-doped zinc oxide or boron-doped zinc oxide.
[0060] In one embodiment, the transparent conductive layer 2 has a thickness of 400 nm to 1000 nm, for example 400 nm, 600 nm, 800 nm or 1000 nm; and the electrode layer 6 has a thickness of 30 nm to 200 nm, for example 30 nm, 100 nm, 150 nm or 200 nm. The thickness parameters of the transparent conductive layer 2 and the electrode layer 6 can be set according to the requirements of the actual production process, and are not limited.
[0061] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A perovskite solar cell, characterized by, The application relates to a substrate layer; one side surface of the substrate layer has a first region, a second region and a third region; the third region is located between the first region and the second region; a transparent conductive layer; the transparent conductive layer is located at least in the third region and extends to the first region and the second region; a battery layer; the battery layer is located on the side surface of the transparent conductive layer of the third region away from the substrate layer; an electrode layer; the electrode layer is arranged at least on the side surface of the transparent conductive layer in the first region and the second region away from the substrate layer; a conductive adhesive tape; the conductive adhesive tape is located on the side surface of the electrode layer in the first region and the second region away from the substrate layer; the conductive adhesive tape comprises a substrate layer, a grid conductive layer and a conductive adhesive filling layer located on one side surface of the substrate layer; the grid conductive layer is arranged on the surface of the substrate layer in a grid structure; the conductive adhesive filling layer fills the mesh holes of the grid structure; the substrate layer is a transparent polymer film; the grid conductive layer is a micron-level grid line structure. The electrode layer is also located on the side surface of the battery layer away from the substrate layer. The battery layer comprises a hole transport layer located on the side surface of the transparent conductive layer away from the substrate layer, a perovskite absorption layer located on the side surface of the hole transport layer away from the substrate layer and an electron transport layer located on the side surface of the perovskite absorption layer away from the substrate layer. The conductive adhesive tape is arranged at intervals with the battery layer. The thickness of the electrode layer is 30nm-200nm. The width of the conductive adhesive tape is less than or equal to the width of the transparent conductive layer in any one of the first region and the second region. The width of the conductive adhesive tape is 3mm-18mm. The conductive adhesive tape comprises: a substrate layer, a grid conductive layer and a conductive adhesive filling layer located on one side surface of the substrate layer; the grid conductive layer is arranged on the surface of the substrate layer in a grid structure; the conductive adhesive filling layer fills the mesh holes of the grid structure; the grid conductive layer and the conductive adhesive filling layer in the conductive adhesive tape are attached to the surface of the electrode layer.
2. The perovskite solar cell according to claim 1, characterized in that, 3. The perovskite solar cell according to claim 2, characterized in that, 4.The perovskite solar cell of claim 1, wherein, 5.The perovskite solar cell of claim 1, wherein, 6.The perovskite solar cell of claim 1, wherein, 7. The perovskite solar cell according to claim 6, characterized in that, 8.The perovskite solar cell of claim 1, wherein, 9. The perovskite solar cell according to claim 8, characterized in that, The grid conductive layer comprises a plurality of meshes, and a cross-sectional dimension of a single mesh is 0.0004mm 2 -1mm 2 The material of the conductive glue filling layer is transparent conductive glue; a cross-sectional dimension of a mesh line for forming a single mesh in the grid conductive layer is 0.0004mm 2 -0.04mm 2 The thickness of the substrate layer is 10-100μm; the thickness of the conductive glue filling layer is 50-200μm; the substrate layer is a polyethylene terephthalate layer or a polyethylene naphthalate layer; and the grid conductive layer is a silver conductive layer.