Solar cell structure and electronic equipment
By setting trenches in the solar cell structure and utilizing clearance space to achieve series connection and electrical isolation of sub-cells, the problem of excessive scribing in existing technologies is solved, thereby improving manufacturing efficiency and product yield.
Patent Information
- Application Number
- CN202423029298.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing solar cell structures require three scribing processes, resulting in low manufacturing efficiency and low product yield.
By setting trenches between adjacent sub-cells, and providing clearance space on the second wall of the trench, the second electrode of the first wall and the second electrode of the second sub-cell are insulated from each other, reducing the number of scribing operations and achieving series connection and electrical isolation of the sub-cells.
This reduces the number of scribing steps, improving the manufacturing efficiency and product yield of solar cells.
Smart Images
Figure CN223600276U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic technology field especially relates to a solar cell structure and electronic equipment. BACKGROUND
[0002] With the continuous development of science and technology, there are new solar cells, for example: perovskite solar cell, organic solar cell etc. The inside of this kind of solar cell is generally composed of multiple sub-cells in series. However, the sub-cells of the existing solar cell structure need to be scribed three times, the first time is to separate the bottom electrode; the second time is to form a groove, so that the two sub-cells can be connected in series after the subsequent electrode is deposited in the groove; the third time is to realize electrical isolation between each sub-cell, thereby forming a specified series structure. However, the solar cell contains multiple sub-cells, and the number of scribing times also increases by several times, which is difficult to improve the manufacturing efficiency of the solar cell. SUMMARY
[0003] The main purpose of the utility model is to provide a solar cell structure and electronic equipment, which aims to reduce the number of scribing and improve the manufacturing efficiency of the solar cell.
[0004] An embodiment of the utility model provides a solar cell structure, which comprises multiple series-connected sub-cells, and the sub-cells comprise a first electrode, a first transport layer, a light-absorbing layer, a second transport layer and a second electrode which are stacked in sequence.
[0005] At least two adjacent sub-cells are provided with a groove, the groove has a groove bottom, opposite first and second groove walls, the first groove wall is a side wall of a first sub-cell, the second groove wall is a side wall of a second sub-cell, the groove bottom is part of a surface of a first electrode of the second sub-cell, and a normal projection of the second groove wall towards the groove bottom direction does not fall on the first groove wall.
[0006] The second electrode is arranged on the first groove wall, the second electrode of the first sub-cell and the groove bottom are conductively connected through the second electrode of the first groove wall, the second groove wall is provided with a clearance space, and the clearance space is used for insulating the second electrode of the first groove wall from the second electrode of the second sub-cell.
[0007] In an embodiment of the utility model, the angle between the second groove wall and the groove bottom is an acute angle, so as to form the clearance space.
[0008] In an embodiment of the utility model, the first groove wall is a slope, and the slope surface of the slope faces the groove opening of the groove.
[0009] In an embodiment of the utility model, the first groove wall and the second groove wall are parallelly arranged, and the groove is formed by laser scribing.
[0010] In an embodiment of the utility model, the inclination angle of the second groove wall relative to the groove bottom is defined as alpha, the total thickness of the first transfer layer, the light absorption layer and the second transfer layer is h, the interval distance of the first transfer layers of two adjacent sub-cells at the bottom of the groove is w, wherein w>h / tan alpha, h>0, 0°<alpha<90°.
[0011] In an embodiment of the utility model, the range of alpha is 60° to 85°.
[0012] In an embodiment of the utility model, the groove is arranged between every two adjacent and series connected sub-cells.
[0013] In an embodiment of the utility model, the second groove wall is provided with a groove, and the groove forms the avoiding space.
[0014] In an embodiment of the utility model, the light absorption layer is a perovskite light absorption layer.
[0015] The utility model further provides an electronic device, the electronic device includes electronic device and solar cell structure, the solar cell structure and the electronic device are electrically connected;
[0016] The solar cell structure comprises a plurality of series connected sub-cells, and the sub-cells comprise a first electrode, a first transfer layer, a light absorption layer, a second transfer layer and a second electrode stacked in sequence.
[0017] At least two adjacent sub-cells are provided with a groove, the groove has a groove bottom, opposite first and second groove walls, the first groove wall is a side wall of a first sub-cell, the second groove wall is a side wall of a second sub-cell, the groove bottom is part of a surface of a first electrode of the second sub-cell, and a normal projection of the second groove wall towards the groove bottom direction does not fall on the first groove wall.
[0018] The first groove wall is provided with the second electrode, the second electrode of the first sub-cell and the groove bottom are electrically connected through the second electrode of the first groove wall, the second groove wall is provided with an avoiding space, and the avoiding space is used for insulating the second electrode of the first groove wall from the second electrode of the second sub-cell.
[0019] The technical scheme of the utility model discloses, through at least two adjacent sub - battery interval is equipped with the groove, the second groove wall of groove is equipped with the space for avoiding, the space for avoiding makes the second electrode of first groove wall and the second electrode of second sub - battery interval insulation, and the orthographic projection of second groove wall towards the direction of groove bottom does not fall on first groove wall, thereby when depositing second electrode, can make second electrode full cover first groove wall, realizes first sub - battery and second sub - battery series connection, can also avoid second electrode full cover in second groove wall, prevents second sub - battery positive and negative pole short - circuit. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to the structure shown by these drawings.
[0021] Figure 1 It is an embodiment of the structure schematic diagram of the solar cell structure of the utility model;
[0022] Figure 2 It is another embodiment of the structure schematic diagram of the solar cell structure of the utility model;
[0023] Figure 3 It is an embodiment of the structure schematic diagram of the electronic equipment of the utility model.
[0024] Explanation of the attached drawing:
[0025] 1000, electronic equipment;100, solar cell structure;10, sub - battery;11, first electrode;13, first transport layer;15, light absorbing layer;17, second transport layer;19, second electrode;30, groove;31, groove bottom;33, first groove wall;35, second groove wall;351, space for avoiding;353, recess;50, base;200, electronic device.
[0026] The realization of the utility model, functional characteristics and advantages will be further illustrated with reference to the drawings. Specific implementation
[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.
[0028] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.
[0029] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple", "several" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0030] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. 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.
[0031] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that the ordinary skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.
[0032] With the continuous development of technology, new types of solar cells have emerged, such as perovskite solar cells and organic solar cells. These types of solar cells are generally composed of multiple sub-cells connected in series. However, existing solar cell structures require three scribe lines between the sub-cells: the first scribe line separates the bottom electrode; the second scribe line forms trenches so that two sub-cells can be connected in series after the subsequent electrode is deposited in the trenches; the third scribe line provides electrical isolation between each sub-cell, thus forming the specified series structure. However, since solar cells contain multiple sub-cells, the number of scribe lines required increases exponentially, making it difficult to improve the manufacturing efficiency of solar cells.
[0033] Understandably, the solar cell structure proposed in this invention can be, but is not limited to, perovskite solar cells, organic solar cells, etc. The solar cell structure proposed in this invention can be applied to electronic devices (including consumer electronics), which can be, but is not limited to, mobile phones, laptops, tablets, personal digital assistants (PDAs), e-book readers, MP3 (Moving Picture Experts Group Audio Layer III) players, MP4 (Moving Picture Experts Group Audio Layer IV) players, wearable devices, navigators, etc.
[0034] The specific structure of the solar cell structure proposed in this utility model will be described below in specific embodiments:
[0035] like Figure 1 As shown, in one embodiment of the solar cell structure 100 of this utility model, the solar cell structure 100 includes a plurality of sub-cells 10 connected in series. Each sub-cell 10 includes a first electrode 11, a first transport layer 13, a light-absorbing layer 15, a second transport layer 17, and a second electrode 19 stacked in sequence.
[0036] A groove 30 is arranged between at least two adjacent sub-cells 10, the groove 30 has a groove bottom 31, opposite first and second groove walls 33 and 35, the first groove wall 33 is a side wall of a first sub-cell 10, the second groove wall 35 is a side wall of a second sub-cell 10, the groove bottom 31 is part of the surface of the first electrode 11 of the second sub-cell 10, and the normal projection of the second groove wall 35 towards the groove bottom 31 does not fall on the first groove wall 33. The first groove wall 33 is provided with a second electrode 19, the second electrode 19 of the first sub-cell 10 and the groove bottom 31 are conductively connected through the second electrode 19 of the first groove wall 33, and the second groove wall 35 is provided with a clearance space 351, the clearance space 351 is used to insulate the second electrode 19 of the first groove wall 33 and the second electrode 19 of the second sub-cell 10.
[0037] Understandably, by arranging the groove 30 between at least two adjacent sub-cells 10, the clearance space 351 is arranged, the clearance space 351 insulates the second electrode 19 of the first groove wall 33 and the second electrode 19 of the second sub-cell 10, and the normal projection of the second groove wall 35 towards the groove bottom 31 does not fall on the first groove wall 33, so that when the second electrode 19 is deposited, the second electrode 19 can fully cover the first groove wall 33 to realize the series connection of the first sub-cell 10 and the second sub-cell 10, and the second electrode 19 can also avoid fully covering the second groove wall 35 to prevent the positive and negative electrodes of the second sub-cell 10 from being short-circuited. Since the groove 30 of the solar cell structure 100 of the present application realizes the functions of the groove formed by the second scribing and the groove formed by the third scribing in the prior art, when the solar cell structure 100 of the present application is manufactured, the number of scribing can be reduced, thereby improving the manufacturing efficiency of the solar cell. In addition, the probability of the solar cell being unqualified due to scribing can be reduced, thereby improving the yield of the product.
[0038] It should be noted that the first transport layer 13 and the second transport layer 17 are opposite to each other, that is, if the first transport layer 13 is an electron transport layer, the second transport layer 17 is a hole transport layer; if the first transport layer 13 is a hole transport layer, the second transport layer 17 is an electron transport layer. The solar cell structure 100 includes a plurality of sub-cells 10, and the number of sub-cells 10 is not limited in the present application, as long as the number of sub-cells 10 is greater than or equal to two. In the present application, the number of grooves 30 is not limited, as long as there is a groove 30 arranged between a pair of adjacent sub-cells 10. Scribing refers to forming a groove, which can be formed by laser scribing, chemical etching, mechanical etching, etc. The method of scribing is not limited in the present application, as long as a groove can be formed.
[0039] In the embodiment, the first electrode 11 is used for conducting electricity to collect the current generated from the light-absorbing layer 15. The utility model does not make limitation to the material of the first electrode 11, as long as it can conduct electricity, and transparent electrode can be selected according to the demand, such as ITO (Indium Tin Oxide) and the like. The electron transport layer is arranged on the first electrode 11, and the electron transport layer is used to promote the conduction of electrons, reduce charge recombination and improve photoelectric efficiency. The utility model does not make limitation to the material of the electron transport layer, as long as it can promote the conduction of electrons and reduce charge recombination. The light-absorbing layer 15 is arranged on the electron transport layer, and the light-absorbing layer 15 is used to absorb light energy and generate electron-hole pairs. The utility model does not make limitation to the material of the light-absorbing layer 15, as long as it can absorb light energy and generate electron-hole pairs, such as perovskite light-absorbing layer, organic light-absorbing layer and the like. The hole transport layer is arranged on the light-absorbing layer 15, and the hole transport layer is used to help the migration of holes to the positive electrode, prevent the entry of electrons and reduce the loss of recombination. The utility model does not make limitation to the material of the hole transport layer, as long as it can absorb light energy and generate electron-hole pairs, help the migration of holes to the positive electrode and reduce the loss of recombination. The second electrode 19 is arranged on the hole transport layer, and the second electrode 19 is used for conducting electricity, which can effectively collect current and complete the circuit. The utility model does not make limitation to the material of the second electrode 19, as long as it can conduct electricity, and transparent electrode can be selected according to the demand, such as ITO (Indium Tin Oxide) and the like. When manufacturing the solar cell, the substrate 50 is usually arranged to provide support, and the first electrode 11 is arranged on the substrate 50.
[0040] Taking the perovskite solar cell as an example, the actual manufacturing process mainly includes the preparation of the first electrode 11, scribing, the preparation of the hole transport layer, the preparation of the perovskite light-absorbing layer, the preparation of the electron transport layer, scribing, the preparation of the second electrode 19 and packaging. Of course, in another embodiment, the manufacturing process of the perovskite solar cell can also mainly include the preparation of the first electrode 11, the preparation of the electron transport layer, scribing, the preparation of the perovskite light-absorbing layer, scribing, the preparation of the hole transport layer, the preparation of the second electrode 19 and packaging. Compared with the existing process of the perovskite battery structure or the organic battery structure: the preparation of the first electrode 11, scribing, the preparation of the hole transport layer, the preparation of the perovskite light-absorbing layer, the preparation of the electron transport layer, scribing, the preparation of the second electrode 19, scribing and packaging, the solar cell structure 100 of the utility model can reduce the number of scribing in the process, improve the production efficiency of the product, and can reduce the probability of the unqualified solar cell structure 100 caused by scribing, so as to improve the yield of the product.
[0041] It should be noted that the preparation of the first electrode 11 can be performed by magnetron sputtering, evaporation, etc. The first electrode 11 is coated on the substrate 50. The preparation of the first electrode 11 is not limited in the present application, and the first electrode 11 can be coated on the substrate 50. The preparation of the hole transport layer can be performed by magnetron sputtering, wet coating, etc. The hole transport layer is coated on the first electrode 11. The preparation of the hole transport layer is not limited in the present application, and the hole transport layer can be coated on the substrate 50. The preparation of the perovskite light-absorbing layer can be performed by coating, printing, etc. The perovskite light-absorbing layer is coated on the hole transport layer. The preparation of the perovskite light-absorbing layer is not limited in the present application, and the perovskite light-absorbing layer can be coated on the substrate 50. The preparation of the electron transport layer can be performed by magnetron sputtering, evaporation, etc. The electron transport layer is coated on the substrate 50. The preparation of the electron transport layer is not limited in the present application, and the electron transport layer can be coated on the perovskite light-absorbing layer. The preparation of the second electrode 19 can be performed by magnetron sputtering, evaporation, etc. The second electrode 19 is coated on the substrate 50. The preparation of the second electrode 19 is not limited in the present application, and the second electrode 19 can be coated on the perovskite light-absorbing layer.
[0042] As shown in the solar cell structure 100 of the present application, the angle between the second groove wall 35 and the groove bottom 31 is an acute angle to form the avoiding space 351. It can be understood that the angle between the second groove wall 35 and the groove bottom 31 is greater than 0 and less than 90°, so that the second groove wall 35 is concave to form the avoiding space 351, so that the second electrode 19 of the first groove wall 33 and the second electrode 19 of the second sub-cell 10 are insulated, and the inclined setting of the second groove wall 35 is relatively easy to process. Figure 1 As shown in the solar cell structure 100 of the present application, the first groove wall 33 is inclined, and the slope surface of the slope faces the slot opening of the groove 30. In this way, it is easier to deposit the second electrode 19 on the first groove wall 33, that is, the slope can reduce the probability of the second electrode 19 deposited on the first groove wall 33 being interrupted, thereby improving the reliability of the second electrode 19 connecting the first sub-cell 10 and the second sub-cell 10 in series.
[0043] Figure 1 As shown in the solar cell structure 100 of the present application, the first groove wall 33 is inclined, and the slope surface of the slope faces the slot opening of the groove 30. In this way, it is easier to deposit the second electrode 19 on the first groove wall 33, that is, the slope can reduce the probability of the second electrode 19 deposited on the first groove wall 33 being interrupted, thereby improving the reliability of the second electrode 19 connecting the first sub-cell 10 and the second sub-cell 10 in series.
[0044] As shown in the solar cell structure 100 of the present application, the first groove wall 33 is inclined, and the slope surface of the slope faces the slot opening of the groove 30. In this way, it is easier to deposit the second electrode 19 on the first groove wall 33, that is, the slope can reduce the probability of the second electrode 19 deposited on the first groove wall 33 being interrupted, thereby improving the reliability of the second electrode 19 connecting the first sub-cell 10 and the second sub-cell 10 in series. Figure 1 As shown in the solar cell structure 100 of the present application, the first groove wall 33 is inclined, and the slope surface of the slope faces the slot opening of the groove 30. In this way, it is easier to deposit the second electrode 19 on the first groove wall 33, that is, the slope can reduce the probability of the second electrode 19 deposited on the first groove wall 33 being interrupted, thereby improving the reliability of the second electrode 19 connecting the first sub-cell 10 and the second sub-cell 10 in series.
[0045] As Figure 1 shown in the solar cell structure 100 of the utility model one embodiment, the inclination angle of the second groove wall 35 relative to the groove bottom 31 is defined as α, the total thickness of the first transport layer 13, the light absorption layer 15 and the second transport layer 17 is h, at the bottom of the groove 30, the interval distance of the first transport layer 13 of the adjacent two sub-cells 10 is w, wherein w>h / tan α, h>0, 0°<α<90°.
[0046] It can be understood that the solar cell structure 100 satisfies: w>h / tan α, h>0, 0°<α<90°, which can ensure that the groove bottom 31, that is, the first electrode 11 of the second sub-cell 10, can be deposited with the second electrode 19, so that the first sub-cell 10 and the second sub-cell 10 can be effectively connected in series.
[0047] As Figure 1 shown in the solar cell structure 100 of the utility model one embodiment, the range of α is 60° to 85°. The inclination angle of the second groove wall 35 relative to the groove bottom 31 can be 60°, 65°, 70°, 75°, 80°, 85°, etc., as long as α satisfies the range of 60° to 85°. It can be understood that if α is less than 60°, the size of the cell dead zone will be greatly increased, resulting in a significant reduction in the active area of the cell. If α is greater than 85°, the probability of the second electrode 19 being unable to be effectively disconnected will increase, resulting in the phenomenon of the positive and negative electrodes of the same sub-cell 10 being easily short-circuited.
[0048] As Figure 1 shown in the solar cell structure 100 of the utility model one embodiment, the groove 30 is arranged between every two adjacent and connected sub-cells 10. It can be understood that in the solar cell structure 100, as long as the sub-cells 10 that need to be connected in series can be connected in series by arranging the groove 30 after the second electrode 19 is deposited, the number of scribing can be greatly reduced, thereby the probability of the solar cell being unqualified due to scribing can be greatly reduced, and the yield of the product can be further improved.
[0049] As Figure 2 shown in the solar cell structure 100 of the utility model one embodiment, the second groove wall 35 is provided with a groove 353, and the groove 353 forms an avoiding space 351. It can be understood that the groove 353 is recessed on the second groove wall 35 away from the first groove wall 33, which can effectively prevent the second electrode 19 from being deposited into the groove 353, thereby achieving the isolation of the positive and negative electrodes of the same sub-cell 10, and effectively avoiding the short circuit of the positive and negative electrodes of the same sub-cell 10.
[0050] As Figure 1As shown in the solar cell structure 100 embodiment of the utility model, the light absorbing layer 15 is perovskite light absorbing layer. Understandably, the light absorbing layer 15 is perovskite light absorbing layer, then the whole solar cell structure 100 is perovskite solar cell. Perovskite solar cell has higher photoelectric conversion efficiency, and simple structure, easy to process and manufacture.
[0051] The utility model discloses still propose a kind of electronic equipment 1000, such as Figure 3 As shown, electronic equipment 1000 includes electronic device 200 and solar cell structure 100, solar cell structure 100 and electronic device 200 are electrically connected. Solar cell structure 100, including multiple series' sub-cell 10, sub-cell 10 includes first electrode 11, first transport layer 13, light absorbing layer 15, second transport layer 17, second electrode 19 stacked in turn. At least two adjacent sub-cell 10 are equipped with groove 30, groove 30 has groove bottom 31, opposite first groove wall 33 and second groove wall 35, first groove wall 33 is the side wall of first sub-cell 10, second groove wall 35 is the side wall of second sub-cell 10, groove bottom 31 is the partial surface of the first electrode 11 of second sub-cell 10, the orthographic projection of second groove wall 35 towards groove bottom 31 direction does not fall on first groove wall 33. Second electrode 19 is equipped on first groove wall 33, the second electrode 19 of first sub-cell 10 and groove bottom 31 are electrically connected by the second electrode 19 of first groove wall 33, second groove wall 35 is equipped with avoiding space 351, and avoiding space 351 is used to make the second electrode 19 of first groove wall 33 and the second electrode 19 of second sub-cell 10 interval insulation.
[0052] Understandably, solar cell structure 100 and electronic device 200 are electrically connected, solar cell structure 100 can absorb light to generate electricity, so as to provide power for electronic device 200, to prolong the use time of electronic device 200.
[0053] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structural transformation made in the inventive concept of the utility model, using the utility model specification and attached drawing contents, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.
Claims
1. A solar cell structure, characterized in that, It includes multiple sub-cells connected in series, each sub-cell comprising a first electrode, a first transport layer, a light-absorbing layer, a second transport layer, and a second electrode stacked sequentially. A groove is provided between at least two adjacent sub-cells. The groove has a bottom, a first wall and a second wall, the first wall being a side wall of the first sub-cell, the second wall being a side wall of the second sub-cell, the bottom being a portion of the surface of the first electrode of the second sub-cell, and the orthographic projection of the second wall toward the bottom not falling on the first wall. The first tank wall is provided with the second electrode, and the second electrode of the first sub-cell and the bottom of the tank are electrically connected through the second electrode of the first tank wall. The second tank wall is provided with a clearance space, which is used to keep the second electrode of the first tank wall and the second electrode of the second sub-cell insulated from each other.
2. The solar cell structure as described in claim 1, characterized in that, The angle between the second tank wall and the tank bottom is an acute angle to form the clearance space.
3. The solar cell structure as described in claim 2, characterized in that, The first trench wall is sloping, and the slope of the slope faces the opening of the trench.
4. The solar cell structure as described in claim 3, characterized in that, The first groove wall and the second groove wall are arranged parallel to each other, and the groove is formed by laser scribing.
5. The solar cell structure as described in claim 2, characterized in that, The inclination angle of the second trench wall relative to the bottom of the trench is defined as α, the total thickness of the first transmission layer, the light-absorbing layer, and the second transmission layer is h, and the distance between the first transmission layers of two adjacent sub-cells at the bottom of the trench is w, where w > h / tanα, h > 0, and 0° < α < 90°.
6. The solar cell structure as described in claim 5, characterized in that, The range of α is 60° to 85°.
7. The solar cell structure as described in claim 1, characterized in that, The trench is provided between every two adjacent sub-cells connected in series.
8. The solar cell structure as described in claim 1, characterized in that, The second groove wall is provided with a groove, which forms the clearance space.
9. The solar cell structure as described in claim 1, characterized in that, The light-absorbing layer is a perovskite light-absorbing layer.
10. An electronic device, characterized in that, The electronic device includes an electronic device and a solar cell structure as described in any one of claims 1 to 9, wherein the solar cell structure and the electronic device are electrically connected.