Solar cell and photovoltaic module

Abstract

The utility model relates to a solar cell and a photovoltaic module. The solar cell includes: a cell body; the plurality of first electrodes are arranged on the surface of one side of the battery body; the first electrode comprises a first slurry layer, a first seed layer and a first metal protection layer, the first slurry layer is arranged on the battery body, the first seed layer covers the first slurry layer, and the first metal protection layer covers the first seed layer. The cost can be reduced, and the reliability of the electrode can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of solar photovoltaic cells, and in particular to a solar cell and a photovoltaic module. Background Art

[0002] At present, the metal electrodes of silicon-based solar cells are mainly prepared by printing silver paste and sintering, but the silver paste is expensive, which is not conducive to reducing the cost of solar cells. In order to reduce the cost of solar cells, the relevant technology adopts the solution of copper paste + plating as the metal electrode, however, the reliability of this metal electrode is poor. Summary of the invention

[0003] Based on this, it is necessary to provide a solar cell and a photovoltaic module to address at least one of the above problems.

[0004] In a first aspect, an embodiment of the present application provides a solar cell, comprising:

[0005] A battery body; and

[0006] A plurality of first electrodes are arranged on one side surface of the battery body; the first electrode comprises a first slurry layer, a first seed layer and a first metal protective layer, the first slurry layer is arranged on the battery body, the first seed layer covers the first slurry layer, and the first metal protective layer covers the first seed layer.

[0007] In one embodiment, the first metal protective layer is configured as a metal plating layer.

[0008] In one embodiment, a first distance exists between a surface of the first seed layer close to the first slurry layer and a surface of the first seed layer away from the first slurry layer, and a second distance exists between a surface of the first metal protective layer close to the first seed layer and a surface of the first metal protective layer away from the first seed layer;

[0009] The second distance is greater than the first distance.

[0010] In one embodiment, the first distance is between 30nm and 200nm;

[0011] And / or, the second distance is between 1 μm and 5 μm.

[0012] In one embodiment, the material of the first slurry layer includes one or more of copper slurry and alloy slurry;

[0013] And / or, the material of the first seed layer includes one or more of copper, silver, nickel and titanium;

[0014] And / or, the material of the first metal protection layer includes one or more of tin and silver.

[0015] In one embodiment, the first electrode further includes a third seed layer, and the third seed layer is disposed between the first slurry layer and the battery body.

[0016] In one embodiment, the first seed layer also covers the surface of the battery body.

[0017] In one embodiment, the first seed layers of two adjacent first electrodes are spaced apart.

[0018] In one embodiment, the first seed layers of two adjacent first electrodes are connected.

[0019] In one embodiment, the battery body has a front side and a back side that are arranged opposite to each other, and the plurality of first electrodes are arranged on the back side of the battery body.

[0020] In one embodiment, the solar cell also includes a plurality of second electrodes, and the plurality of second electrodes are arranged on a surface of the battery body away from the first electrode; the second electrode includes a second slurry layer, a second seed layer and a second metal protective layer, the second slurry layer is arranged on the battery body, the second seed layer covers the second slurry layer, and the second metal protective layer covers the second seed layer.

[0021] In a second aspect, an embodiment of the present application further provides a photovoltaic assembly, comprising the solar cell in any embodiment of the first aspect.

[0022] In a third aspect, an embodiment of the present application further provides a photovoltaic system, comprising the photovoltaic component in the second aspect.

[0023] The solar cell and photovoltaic module provided in the embodiments of the present application, by setting the first electrode as a composite structure including a first slurry layer, a first seed layer and a first metal protective layer, can, on the one hand, reduce costs compared to silver paste electrodes; on the other hand, compared to electrodes made of copper paste and plating, the first slurry layer can be more evenly and fully protected, thereby improving the reliability of the first electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the partial structure of a solar cell provided in one embodiment of the present application.

[0026] Figure 2 A schematic diagram of the partial structure of another solar cell provided in one embodiment of the present application.

[0027] Figure 3 A schematic diagram of the partial structure of another solar cell provided in an embodiment of the present application.

[0028] Figure 4 A schematic diagram of the partial structure of another solar cell provided in an embodiment of the present application.

[0029] Figure 5 A schematic diagram of the partial structure of another solar cell provided in an embodiment of the present application.

[0030] Figure 6 A schematic diagram of the partial structure of another solar cell provided in an embodiment of the present application.

[0031] Figure 7 A schematic diagram of the partial structure of another solar cell provided in an embodiment of the present application.

[0032] Figure 8 for Figure 1 Schematic diagram of the solar cell during the manufacturing process.

[0033] Fig. 9 for Figure 2 Schematic diagram of the solar cell during the manufacturing process.

[0034] Fig.10 for Figure 3 Schematic diagram of the solar cell during the manufacturing process.

[0035] Reference numerals:

[0036] 10. Solar cell; 11. Battery body; 111. Semiconductor substrate; 112. First intrinsic semiconductor layer; 113. First doped layer; 114. First transparent conductive layer; 115. Second intrinsic semiconductor layer; 116. Second doped layer; 117. Second transparent conductive layer; 118. Passivation layer; 119. Anti-reflection layer; 12. First electrode; 121. First slurry layer; 122. First seed layer; 123. First metal protective layer; 124. Third seed layer; 13. Second electrode; 131. Second slurry layer; 132. Second seed layer; 133. Second metal protective layer. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers, doping types and / or parts, these elements, components, regions, layers, doping types and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, doping type or part from another element, component, region, layer, doping type or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer, doping type or part discussed below can be represented as a second element, component, region, layer or part.

[0040] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0041] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, in this specification, the term "and / or" includes any and all combinations of the relevant listed items.

[0042] Embodiments of the application are described herein with reference to cross-sectional views that are schematic diagrams of ideal embodiments (and intermediate structures) of the application, so that variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, embodiments of the application should not be limited to the specific shapes of the zones shown herein, but rather include shape deviations due to, for example, manufacturing techniques. For example, an implanted region shown as a rectangle typically has rounded or curved features and / or an implant concentration gradient at its edges, rather than a binary change from an implanted region to a non-implanted region. Similarly, a buried region formed by implantation may result in some implantation in the region between the buried region and the surface through which the implantation is performed. Therefore, the regions shown in the figures are schematic in nature, their shapes do not represent the actual shape of the region of the device, and do not limit the scope of the application.

[0043] As described in the background technology, currently, the metal electrodes of silicon-based solar cells are mainly prepared by printing silver paste and sintering, but the silver paste is expensive, which is not conducive to reducing the cost of solar cells. In order to reduce the cost of solar cells, the related technology adopts the solution of copper paste + plating as the metal electrode, however, the reliability of this metal electrode is poor.

[0044] After research, the applicant found that the reason why the metal electrode coated with copper paste has poor reliability is that the surface of the copper paste is not smooth after curing, and organic components will remain on the surface, resulting in the inability to form a uniform coating, thereby failing to effectively protect the copper paste electrode, resulting in poor reliability of the metal electrode.

[0045] In view of the above problems, the present application provides a solar cell and a photovoltaic module. By setting the first electrode as a composite structure including a first slurry layer, a first seed layer and a first metal protective layer, on the one hand, compared with the silver paste electrode, the metallization cost can be greatly reduced, and the cost can be reduced by more than 80%; on the other hand, compared with the electrode made of copper paste and plating, the first slurry layer can be more evenly and fully protected, thereby improving the reliability of the first electrode.

[0046] In a first aspect, an embodiment of the present application provides a solar cell 10, which may be a PERT (Passivated Emitter Rear Totally-diffused) cell, a TOPCon (Tunnel Oxide Passivated Contact) cell, an HJT (Heterojunction with Intrinsic Thin-film) cell, an IBC (Interdigitated Back Contact) cell, a stacked cell, or the like.

[0047] Specifically, refer to Figure 1 , Figure 2 and Figure 3 As shown, the solar cell 10 includes a cell body 11 and a plurality of first electrodes 12. The plurality of first electrodes 12 are disposed on one side surface of the cell body 11. The first electrode 12 includes a first slurry layer 121, a first seed layer 122 and a first metal protective layer 123, wherein the first slurry layer 121 is disposed on the cell body 11, the first seed layer 122 covers the first slurry layer 121, and the first metal protective layer 123 covers the first seed layer 122.

[0048] In the embodiment of the present application, by setting the first electrode 12 as a composite structure including a first slurry layer 121, a first seed layer 122 and a first metal protective layer 123, on the one hand, compared with the silver paste electrode, the metallization cost can be greatly reduced, which can reduce the cost by more than 80%; on the other hand, compared with the electrode made of copper paste and plating, the first seed layer 122 helps to form a uniform first metal protective layer 123, thereby providing more uniform and sufficient protection for the first slurry layer 121; on the other hand, the first seed layer 122 and the first metal protective layer 123 can form a double-layer protection for the first slurry layer 121, further improving the reliability of the first electrode 12.

[0049] In one embodiment, the first metal protection layer 123 is configured as a metal plating layer. Thus, forming the first metal protection layer 123 by electroplating not only helps to form a uniform protection film layer on the first seed layer 122, but also helps to reduce the manufacturing difficulty.

[0050] In one embodiment, the first seed layer 122 can be formed by a deposition process. Further, the first seed layer 122 can be made by a physical vapor deposition (PVD) process. In this way, a uniform first seed layer 122 can be formed.

[0051] In one embodiment, referring to Figure 1 As shown, there is a first distance T1 between the surface of the first seed layer 122 close to the first slurry layer 121 and the surface of the first seed layer 122 away from the first slurry layer 121, and there is a second distance T2 between the surface of the first metal protective layer 123 close to the first seed layer 122 and the surface of the first metal protective layer 123 away from the first seed layer 122. The second distance T2 is greater than the first distance T1.

[0052] Here, the first distance T1 may be understood as the thickness of the first seed layer 122 , and the second distance T2 may be understood as the thickness of the first metal protection layer 123 .

[0053] Making the first seed layer 122 thinner is beneficial to reducing the manufacturing cost, and making the first metal protection layer 123 thicker is beneficial not only to welding but also to providing better protection for the first slurry layer 121 .

[0054] In one embodiment, the first distance T1 is between 30nm and 200nm, that is, the thickness of the first seed layer 122 is between 30nm and 200nm. For example, the first distance T1 can be 30nm, 50nm, 80nm, 110nm, 150nm, 170nm, 200nm, or between any two of the above values.

[0055] It should be noted that when the thickness of the first seed layer 122 is thinner than 30 nm, it is not conducive to manufacturing the first metal protection layer 123 ; when the thickness of the first seed layer 122 is thicker than 200 nm, the manufacturing cost of the first seed layer 122 is likely to increase.

[0056] In one embodiment, the second distance T2 is between 1 μm and 5 μm, that is, the thickness of the first metal protection layer 123 is between 1 μm and 5 μm. For example, the second distance T2 can be 1 μm, 2 μm, 3 μm, 5 μm, or between any two of the above values.

[0057] It should be noted that when the thickness of the first metal protective layer 123 is thinner than 1 μm, it is not only not conducive to welding, but also makes the protection effect of the first metal protective layer 123 poor; when the thickness of the first metal protective layer 123 is thicker than 5 μm, it is easy to increase the production cost of the first metal protective layer 123.

[0058] In one embodiment, referring to Figure 1 As shown, the width W of the first slurry layer 121 is between 5 μm and 50 μm. For example, the width W of the first slurry layer 121 may be 5 μm, 10 μm, 20 μm, 30 μm, 50 μm, or between any two of the above values.

[0059] In one embodiment, referring to Figure 1 As shown, the height H of the first slurry layer 121 is between 5 μm and 20 μm. For example, the height H of the first slurry layer 121 can be 5 μm, 10 μm, 15 μm, 20 μm, or between any two of the above values.

[0060] By making the width W and the height H of the first slurry layer 121 within the above range, the first slurry layer 121 can have good electrical contact with the battery body 11, which is beneficial to reduce the resistance.

[0061] In one embodiment, the material of the first slurry layer 121 includes one or more of copper slurry and alloy slurry, which is helpful to reduce the manufacturing cost of the first electrode 12 .

[0062] It is understandable that the first slurry layer 121 can also be made of silver-clad copper slurry with low silver content.

[0063] In one embodiment, the material of the first seed layer 122 includes one or more of copper, silver, nickel and titanium. This is not only helpful to reduce the manufacturing cost of the first seed layer 122 , but also helpful to the adhesion of the first metal protection layer 123 .

[0064] In one embodiment, the material of the first metal protection layer 123 includes one or more of tin and silver, which is helpful to improve the protection performance and welding performance.

[0065] In one embodiment, referring to Figure 4 As shown, the first electrode 12 further includes a third seed layer 124, which is disposed between the first slurry layer 121 and the battery body 11. By providing the third seed layer 124, diffusion contamination caused by contact between the slurry and the battery body 11 can be reduced, which is beneficial to improving the performance of the solar cell 10.

[0066] In one embodiment, referring to Figure 2 and Figure 3 As shown, the first seed layer 122 also covers the surface of the battery body 11. This helps to reduce the difficulty of making the first seed layer 122, thereby reducing the manufacturing cost.

[0067] In one embodiment, referring to Figure 2 As shown, the first seed layers 122 of two adjacent first electrodes 12 are connected. In this way, after the first seed layer 122 is deposited, it is not necessary to remove the first seed layer 122 on the surface of the battery body 11, thereby reducing the manufacturing cost.

[0068] Furthermore, the battery body 11 has a front side and a back side that are arranged opposite to each other, and a plurality of first electrodes 12 are arranged on the back side of the battery body 11. It is understandable that since the first seed layer 122 and the first metal protective layer 123 cover the entire surface, arranging the first electrode 12 on the back side of the battery body 11 can reduce the influence of the first seed layer 122 and the first metal protective layer 123 on the incident sunlight, which is beneficial to improving the efficiency of the solar cell 10.

[0069] In one embodiment, referring to Figure 3 As shown, the first seed layers 122 of two adjacent first electrodes 12 are spaced apart. That is, the first seed layer 122 covers a portion of the surface of the battery body 11 adjacent to the first slurry layer 121. In this way, the accuracy of the mask (the mask is used to make the first seed layer 122) can be reduced, thereby reducing the production cost of the first electrode 12.

[0070] In one embodiment, referring to Figure 5 As shown, the solar cell 10 further includes a plurality of second electrodes 13, which are disposed on a surface of the cell body 11 on one side away from the first electrode 12. It is understood that the second electrode 13 may be a common electrode in conventional technology.

[0071] In one embodiment, referring to Figure 6 As shown, the second electrode 13 includes a second slurry layer 131, a second seed layer 132 and a second metal protective layer 133. The second slurry layer 131 is disposed on the battery body 11, the second seed layer 132 covers the second slurry layer 131, and the second metal protective layer 133 covers the second seed layer 132. In this way, it is not only beneficial to reduce the manufacturing cost, but also can improve the reliability of the second electrode 13.

[0072] It is understandable that the structures of the second electrode 13 and the first electrode 12 may be the same, and the embodiments of the present application will not be described in detail herein. Figure 6 As shown, the first seed layers 122 of two adjacent first electrodes 12 may be connected to each other, and the second seed layers 132 of two adjacent second electrodes 13 may also be spaced apart.

[0073] In one embodiment, the battery body 11 may include a semiconductor substrate 111, a first intrinsic semiconductor layer 112, a first doped layer 113, a first transparent conductive layer 114, a second intrinsic semiconductor layer 115, a second doped layer 116, and a second transparent conductive layer 117. The first intrinsic semiconductor layer 112, the first doped layer 113, and the first transparent conductive layer 114 are sequentially stacked on the front side of the semiconductor substrate 111, and the second electrode 13 is disposed on the first transparent conductive layer 114. The second intrinsic semiconductor layer 115, the second doped layer 116, and the second transparent conductive layer 117 are sequentially stacked on the back side of the semiconductor substrate 111, and the first electrode 12 is disposed on the second transparent conductive layer 117. The doping types of the first doped layer 113 and the second doped layer 116 are opposite, and the materials of the first doped layer 113 and the second doped layer 116 may be amorphous silicon, microcrystalline silicon, nanocrystalline silicon, etc.

[0074] In one embodiment, referring to Figure 7 As shown, the battery body 11 includes a semiconductor substrate 111, a passivation layer 118, an anti-reflection layer 119, a second intrinsic semiconductor layer 115, a second doping layer 116, and a second transparent conductive layer 117. The passivation layer 118 and the anti-reflection layer 119 are sequentially stacked on the front side of the semiconductor substrate 111, the second intrinsic semiconductor layer 115, the second doping layer 116, and the second transparent conductive layer 117 are sequentially stacked on the back side of the semiconductor substrate 111, and a plurality of first electrodes 12 are disposed at intervals on the back side of the battery body 11. It can be understood that the doping types of two adjacent second doping layers 116 are opposite.

[0075] Figure 1 The first electrode 12 of the solar cell 10 shown may be Figure 8 It is made by the process shown. Figure 2 The first electrode 12 of the solar cell 10 shown may be Fig. 9 It is made by the process shown. Figure 3 The first electrode 12 of the solar cell 10 shown may be Fig.10 Specifically, firstly, the slurry is printed on the battery body 11, and then sintered to form the first slurry layer 121, then the first seed layer 122 is deposited by PVD process, and then the first metal protection layer 123 is formed by chemical plating process, and finally cleaned and dried.

[0076] In a second aspect, an embodiment of the present application further provides a photovoltaic assembly, comprising the solar cell in any embodiment of the first aspect.

[0077] For example, the photovoltaic module includes a plurality of solar cells, which can be connected in series by welding ribbons, so that the electric energy generated by the individual solar cells can be collected for subsequent transmission. Of course, the solar cells can be arranged at intervals or stacked in a shingled form.

[0078] Furthermore, the photovoltaic module also includes an encapsulation layer and a cover plate (not shown), the encapsulation layer is used to cover the surface of the battery string, and the cover plate is used to cover the surface of the encapsulation layer away from the battery string. The solar cells are electrically connected in the form of a whole piece or multiple pieces to form a plurality of battery strings, and the plurality of battery strings are electrically connected in series and / or in parallel. Specifically, in some embodiments, the plurality of battery strings can be electrically connected by a conductive tape. The encapsulation layer covers the surface of the solar cell. Exemplarily, the encapsulation layer can be an organic encapsulation film such as an ethylene-vinyl acetate copolymer film, a polyethylene octene co-elastic film, or a polyethylene terephthalate film. The cover plate can be a cover plate with a light-transmitting function such as a glass cover plate, a plastic cover plate, etc.

[0079] In a third aspect, an embodiment of the present application further provides a photovoltaic system, comprising the photovoltaic component in the second aspect.

[0080] Specifically, the photovoltaic system can be used in photovoltaic power stations, such as ground power stations, rooftop power stations, water power stations, etc., and can also be used in equipment or devices that use solar energy to generate electricity, such as user solar power supplies, solar street lights, solar cars, solar buildings, etc. Of course, it can be understood that the application scenarios of the photovoltaic system are not limited to this, that is to say, the photovoltaic system can be used in all fields that require solar energy to generate electricity. Taking the photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a junction box and an inverter. The photovoltaic array may be an array combination of multiple photovoltaic components. For example, multiple photovoltaic components can form multiple photovoltaic arrays. The photovoltaic array is connected to the junction box. The junction box can converge the current generated by the photovoltaic array. The converged current flows through the inverter and is converted into the alternating current required by the mains power grid. After that, it is connected to the mains network to realize solar power supply.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A solar cell, characterized in that: include: Battery body; as well as A plurality of first electrodes are disposed on one side surface of the battery body; The first electrode includes a first slurry layer, a first seed layer and a first metal protective layer. The first slurry layer is disposed on the battery body, the first seed layer covers the first slurry layer, and the first metal protective layer covers the first seed layer.

2. The solar cell according to claim 1, characterized in that The first metal protective layer is configured as a metal coating.

3. The solar cell according to claim 1, characterized in that A first distance exists between a surface of the first seed layer close to the first slurry layer and a surface of the first seed layer away from the first slurry layer, and a second distance exists between a surface of the first metal protective layer close to the first seed layer and a surface of the first metal protective layer away from the first seed layer; The second distance is greater than the first distance.

4. The solar cell according to claim 3, characterized in that: The first distance is between 30nm and 200nm; And / or, the second distance is between 1 μm and 5 μm.

5. The solar cell according to claim 1, characterized in that: The first electrode further includes a third seed layer, and the third seed layer is disposed between the first slurry layer and the battery body.

6. The solar cell according to any one of claims 1 to 5, characterized in that: The first seed layer also covers the surface of the battery body.

7. The solar cell according to claim 6, characterized in that: The first seed layers of two adjacent first electrodes are spaced apart.

8. The solar cell according to claim 6, characterized in that: The first seed layers of two adjacent first electrodes are connected.

9. The solar cell according to claim 8, characterized in that The battery body has a front side and a back side which are arranged opposite to each other, and the plurality of first electrodes are arranged on the back side of the battery body.

10. The solar cell according to any one of claims 1 to 5, characterized in that: The solar cell also includes a plurality of second electrodes, which are arranged on a surface of the battery body away from the first electrode; the second electrode includes a second slurry layer, a second seed layer and a second metal protective layer, the second slurry layer is arranged on the battery body, the second seed layer covers the second slurry layer, and the second metal protective layer covers the second seed layer.

11. A photovoltaic module, characterized in that: Comprising the solar cell according to any one of claims 1 to 10.

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