Test fixture and test system for perovskite cells

Abstract

The application provides a test fixture and a test system for a perovskite battery, and relates to the technical field of test devices. The test fixture comprises a base, a carrier plate and a mask plate. By designing a detachable carrier plate and base, the perovskite battery is not squeezed and fixed on the carrier plate, thereby solving the problem that the perovskite battery is fixed by a clamp for testing in the prior art, which leads to inaccurate test results and easily damages the perovskite battery. In addition, the carrier plate is always arranged in the mounting cavity of the base, and the distance between the perovskite battery and the solar simulator can be easily fixed by keeping the base in a fixed position, which is beneficial to further improve the accuracy of the test results of the perovskite battery in the application.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, specifically to a testing fixture and testing system for perovskite solar cells. Background Technology

[0002] In related technologies, when testing the photoelectric conversion efficiency of perovskite solar cells, the cells are typically fixed using clamps. If the clamping force is too weak, the perovskite cells are difficult to secure and may detach; if the clamping force is too strong, the cells may be scratched. Furthermore, the additional clamping force applied to the perovskite cells during testing can lead to inaccurate results. Additionally, using clamps makes it difficult to maintain a consistent distance between the perovskite cells and the solar simulator, also resulting in inaccurate test data and reduced reliability. Utility Model Content

[0003] This application provides a test fixture and test system for perovskite solar cells, aiming to solve at least one of the above-mentioned technical problems.

[0004] On the one hand, this application provides a test fixture for perovskite solar cells, the test fixture including a base, a carrier plate and a mask; The base is provided with a mounting cavity, and the mounting cavity is provided with a first electrical connection part and a second electrical connection part; the first electrical connection part and the second electrical connection part are respectively used to electrically connect to the positive electrode and the negative electrode of the perovskite battery; The mask plate is provided with a first light-transmitting hole; The carrier plate is detachably connected to the base. The carrier plate has a first cavity and a second cavity. The surface of the carrier plate has a second light-transmitting hole. The second cavity is disposed between the first cavity and the surface with the second light-transmitting hole. The light-transmitting hole connects the first cavity and the second cavity. The perovskite solar cell can be disposed in the first cavity without being squeezed. The mask is disposed in the second cavity. The second light-transmitting hole communicates with the first cavity through the first light-transmitting hole, so that optics can illuminate the light-absorbing surface of the perovskite solar cell through the second light-transmitting hole and the first light-transmitting hole. The orthographic projection of the first light-transmitting hole is located in the second light-transmitting hole.

[0005] In some embodiments, the carrier plate includes a top surface and a bottom surface disposed opposite to each other, the second light-transmitting hole is disposed on the top surface, and the first cavity is disposed close to the bottom surface.

[0006] In some embodiments, the carrier plate further includes a first side and a second side disposed opposite to each other, the first side being connected to the top surface and the bottom surface respectively, the second side being connected to the top surface and the bottom surface respectively, and the first side and / or the second side being provided with a first mounting port communicating with the first cavity, wherein the perovskite solar cell can be plugged into and detached in the first cavity through the first mounting port.

[0007] In some embodiments, the carrier plate further includes a first side and a second side disposed opposite to each other, the first side being connected to the top surface and the bottom surface respectively, the second side being connected to the top surface and the bottom surface respectively, and the first side and / or the second side being provided with a second mounting port communicating with the first cavity, the mask being insertably and detachably disposed in the second cavity through the second mounting port.

[0008] In some embodiments, the carrier plate further includes a first side surface connected to the top surface and the bottom surface respectively. The first side surface is provided with a first mounting port and a second mounting port. The first mounting port communicates with the first cavity, and the second mounting port communicates with the second cavity. The perovskite solar cell can be plugged into the first cavity through the first mounting port, and the mask can be plugged into the second cavity through the second mounting port.

[0009] In some embodiments, the carrier plate is adapted to the shape of the mounting cavity; And / or, the carrier plate is snapped into the mounting cavity; And / or the surface of the base is provided with a third mounting port, the third mounting port communicating with the mounting cavity, the carrier plate being able to be placed in the mounting cavity or removed from the mounting cavity through the third mounting port.

[0010] In some embodiments, the mounting cavity has a bottom wall disposed opposite to the third mounting port, the first electrical connection portion and the second electrical connection portion are disposed on the bottom wall, and the second cavity is disposed close to the bottom wall; And / or, the carrier plate is provided with a handle; And / or, the first electrical connection portion is a conductive probe; And / or, the second electrical connection portion is a conductive probe; And / or, the number of the mask plates is multiple, and the area of ​​the first light-transmitting hole on each mask plate is different.

[0011] In some embodiments, the first electrical connection portion and / or the second electrical connection portion are elastic conductive probes.

[0012] This application embodiment also provides a test fixture for perovskite solar cells, the test fixture including a base, a carrier plate and a mask; The base is provided with a mounting cavity, and the mounting cavity is provided with a first electrical connection part and a second electrical connection part; the first electrical connection part and the second electrical connection part are respectively used to electrically connect to the positive electrode and the negative electrode of the perovskite battery; The mask plate is provided with a first light-transmitting hole; The carrier plate is detachably connected to the base. The carrier plate has a first cavity and a second cavity. The surface of the carrier plate has a second light-transmitting hole. The second cavity is disposed between the first cavity and the surface with the second light-transmitting hole. The light-transmitting hole connects the first cavity and the second cavity. The perovskite solar cell is disposed in the first cavity and is adapted to the shape of the first cavity. The mask is disposed in the second cavity. The second light-transmitting hole communicates with the first cavity through the first light-transmitting hole, so that optics can illuminate the light-absorbing surface of the perovskite solar cell through the second light-transmitting hole and the first light-transmitting hole. The orthographic projection of the first light-transmitting hole is located in the second light-transmitting hole.

[0013] This application embodiment also provides a testing system, which includes a solar simulator, a digital source meter, a perovskite solar cell, and the aforementioned testing fixture; the solar simulator is used to provide a test light source, and the digital source meter is electrically connected to the first electrical connection part and the second electrical connection part to acquire electrical signals generated during the test.

[0014] Beneficial effects: This application provides a test fixture for perovskite solar cells and a test system incorporating the fixture. By designing a detachable carrier plate and base, the perovskite solar cell is fixed to the carrier plate without being squeezed, thus solving the problems of inaccurate test results and easy damage to the perovskite solar cell caused by clamping and fixing it in the prior art. Furthermore, the carrier plate is always positioned within the mounting cavity of the base. By keeping the base in a fixed position, the distance between the perovskite solar cell and the solar simulator can be easily fixed, which further improves the accuracy of the test results for the perovskite solar cell in this application. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the testing system provided in this application; Figure 2 yes Figure 1Exploded view of the test system; Figure 3 This is a schematic flowchart of one embodiment of the base provided in this application; Figure 4 This is a schematic flowchart of an embodiment of the carrier plate provided in this application; Figure 5 This is a schematic flowchart of an embodiment of the mask provided in this application; Figure 6 This is a schematic flowchart of one embodiment of the perovskite solar cell provided in this application.

[0017] Icon labels: 100. Test fixture; 10. Base; 11. Mounting cavity; 121. First electrical connection part; 122. Second electrical connection part; 13. Bottom wall; 14. Conductive wire; 20. Carrier plate; 21. First cavity; 22. Second cavity; 23. Second light-transmitting hole; 24. Top surface; 25. Bottom surface; 26. First side surface; 27. First mounting port; 28. Second mounting port; 29. ​​Handle; 30. Mask; 31. First light-transmitting hole; 40. Perovskite solar cell; 41. Positive electrode; 42. Negative electrode. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0022] In related technologies, when testing the photoelectric conversion efficiency of perovskite solar cells, the cells are typically fixed using clamps. If the clamping force is too weak, the perovskite cells are difficult to secure and may detach; if the clamping force is too strong, the cells may be scratched. Furthermore, the additional clamping force applied to the perovskite cells during testing can lead to inaccurate results. Additionally, using clamps makes it difficult to maintain a consistent distance between the perovskite cells and the solar simulator, also resulting in inaccurate test data and reduced reliability.

[0023] In view of this, embodiments of this application provide a test fixture for perovskite solar cells and a test system having the test fixture. By designing a detachable carrier plate and base, the perovskite solar cell is fixed to the carrier plate without being squeezed, thereby solving the problems of inaccurate test results and easy damage to the perovskite solar cell caused by clamping and fixing it in the prior art. In addition, the carrier plate is always set in the mounting cavity of the base. By keeping the base in a fixed position, the distance between the perovskite solar cell and the solar simulator can be easily fixed, which is beneficial to further improve the accuracy of the test results of the perovskite solar cell in this application.

[0024] Specifically, please refer to Figures 1 to 6 This application provides a test fixture 100 for a perovskite solar cell 40. Please refer to... Figures 2 to 4The test fixture 100 includes a base 10, a carrier plate 20, and a mask 30. The base 10 supports the carrier plate 20, the mask 30, and the perovskite solar cell 40 located within it. It also electrically connects the perovskite solar cell 40 (i.e., the cell under test) to external inspection equipment (e.g., a digital source meter) so that the external inspection equipment can acquire the electrical signals generated during the absorption of visible light by the cell under test. The carrier plate 20 supports and fixes the cell under test and the mask 30, and the cell under test is not subjected to external pressure when fixed on the carrier plate 20. The mask 30 determines the area of ​​light irradiated onto the cell under test.

[0025] The base 10 has a mounting cavity 11, within which a first electrical connection portion 121 and a second electrical connection portion 122 are provided. The first electrical connection portion 121 and the second electrical connection portion 122 are respectively used for electrical connection to the positive electrode 41 and the negative electrode 42 of the perovskite battery 40. For example, the first electrical connection portion 121 is used for electrical connection to the positive electrode 41 of the perovskite battery 40, and correspondingly, the second electrical connection portion 122 is used for electrical connection to the negative electrode 42 of the perovskite battery 40. Again, for example, the first electrical connection portion 121 is used for electrical connection to the negative electrode 42 of the perovskite battery 40, and correspondingly, the second electrical connection portion 122 is used for electrical connection to the positive electrode 41 of the perovskite battery 40.

[0026] The mask 30 has a first light-transmitting hole 31. For example, the mask 30 can be a metal mask. The first light-transmitting hole 31 passes through the mask 30. The shape of the first light-transmitting hole 31 is not limited, and it can be circular, square, or irregular, etc.

[0027] The carrier plate 20 and the base 10 are detachably connected. For example, the carrier plate 20 and the base 10 are detachably connected by sliding. Alternatively, the carrier plate 20 and the base 10 are detachably connected by fastening or snap-fitting. Another example is that the carrier plate 20 and the base 10 are detachably connected by plug-in connection. Yet another example is that the carrier plate 20 and the base 10 are detachably connected by threaded connection.

[0028] The carrier plate 20 has a first cavity 21 and a second cavity 22. A second light-transmitting hole 23 is provided on the surface of the carrier plate 20. The second cavity 22 is located between the first cavity 21 and the surface with the second light-transmitting hole 23, and the light-transmitting hole connects the first cavity 21 and the second cavity 22. The perovskite solar cell 40 can be disposed within the first cavity 21 without being compressed. That is, the perovskite solar cell 40 is fixed within the first cavity 21 with minimal or no external compression. For example, by making the volume of the first cavity 21 slightly larger than the volume of the perovskite solar cell 40, the perovskite solar cell 40 can be fixed within the first cavity 21 without being compressed. For example, when the perovskite battery 40 is fixed inside the first cavity 21, the perovskite battery 40 is in surface contact with the first cavity 21. The contact area between the perovskite battery 40 and the first cavity 21 is large. Even if it is subjected to the squeezing force of the wall of the first cavity 21, compared with the fixing method of clamping, its impact on the test results is relatively small because of its large contact area and uniform squeezing force.

[0029] The mask 30 is disposed inside the second cavity 22; the second light-transmitting hole 23 is connected to the first cavity 21 through the first light-transmitting hole 31, so that the light source (e.g., visible light) can irradiate the light-absorbing surface of the perovskite cell 40 through the second light-transmitting hole 23 and the first light-transmitting hole 31, thereby enabling the perovskite cell 40 to undergo photoelectric conversion.

[0030] The orthographic projection of the first light-transmitting hole 31 is located within the second light-transmitting hole 23. That is, after the perovskite solar cell 40 and the mask 30 are installed in the preset position on the carrier plate 20, and the carrier plate 20 is installed in the mounting cavity 11, the orthographic projection of the first light-transmitting hole 31 is located within the second light-transmitting hole 23. The area of ​​incident light illuminating the light-absorbing surface of the perovskite solar cell 40 is the area of ​​the first light-transmitting hole 31 on the corresponding mask 30. In this way, the area of ​​incident light can be directly obtained through the area of ​​the first light-transmitting hole 31.

[0031] For example, there are multiple masks 30, and the area of ​​the first light-transmitting hole 31 on each mask 30 is different. Furthermore, each mask 30 is adapted to the second cavity 22. In this way, the area of ​​the incident light can be changed by replacing different masks 30, which helps to further improve the testing efficiency.

[0032] In summary, this application provides a test fixture 100 for a perovskite solar cell 40. The test fixture 100 includes a base 10, a carrier plate 20, and a mask 30. The base 10 has a mounting cavity 11, and the mounting cavity 11 has a first electrical connection part 121 and a second electrical connection part 122. The first electrical connection part 121 and the second electrical connection part 122 are respectively used to electrically connect with the positive electrode 41 and the negative electrode 42 of the perovskite solar cell 40. The mask 30 has a first light-transmitting hole 31. The carrier plate 20 is detachably connected to the base 10. The carrier plate 20 has a first cavity 21 and a second cavity 22. The surface of the carrier plate 20 has a second light-transmitting hole 23. The second cavity 22 is disposed between the first cavity 21 and the surface with the second light-transmitting hole 23. The light-transmitting hole connects the first cavity 21 and the second cavity 22. The perovskite solar cell 40 can be disposed in the first cavity 21 without being squeezed, and the mask 30 is disposed in the second cavity 22. The second light-transmitting hole 23 is connected to the first cavity 21 through the first light-transmitting hole 31, so that light can pass through the second light-transmitting hole 23 and the first light-transmitting hole 31 and illuminate the light-absorbing surface of the perovskite solar cell 40 located in the first cavity 21; the orthographic projection of the first light-transmitting hole 31 is located in the second light-transmitting hole 23.

[0033] In this embodiment, by designing a detachable carrier plate 20 and a base 10, the perovskite solar cell 40 is fixed to the carrier plate 20 without being squeezed, thereby solving the problem in the prior art where the perovskite solar cell 40 is clamped and fixed for testing, resulting in inaccurate test results and easy damage to the perovskite solar cell 40. Furthermore, the carrier plate 20 is always positioned within the mounting cavity 11 of the base 10. By keeping the base 10 in a fixed position, the distance between the perovskite solar cell 40 and the solar simulator (not shown in the figure) can be easily fixed, which is beneficial to further improving the accuracy of the test results of the perovskite solar cell 40 in this application.

[0034] In some embodiments, please continue reading Figure 4 The carrier plate 20 includes a top surface 24 and a bottom surface 25 disposed opposite to each other. A second light-transmitting hole 23 is disposed on the top surface 24, and a first cavity 21 is disposed near the bottom surface 25. In this embodiment, by disposing the second light-transmitting hole 23 on the top surface 24 and the first cavity 21 near the bottom surface 25, the structure of the carrier plate 20 is simplified and its structural compactness is improved.

[0035] For example, the carrier plate 20 is generally cuboid in shape. Along the thickness direction of the carrier plate 20, the carrier plate 20 includes a top surface 24 and a bottom surface 25 disposed opposite each other. The second light-transmitting hole 23 is disposed on the top surface 24, and the first cavity 21 is disposed near the bottom surface 25. Of course, in other embodiments of this application, the carrier plate 20 may also be cylindrical, multifaceted spherical, prismatic, etc., and is not limited here.

[0036] Furthermore, the carrier plate 20 also includes a first side 26 and a second side disposed opposite to each other. The top surface 24 and bottom surface 25 of the first side 26 are connected, and the top surface 24 and bottom surface 25 of the second side are also connected. A first mounting port 27 communicating with the first cavity 21 is provided on the first side 26 and / or the second side, allowing the perovskite battery 40 to be plugged into and detached from the first cavity 21 via the first mounting port 27. It should be noted that the first mounting port 27 can be provided on the first side 26, or on the second side, or simultaneously on both the first side 26 and the second side; no limitation is made here. In this embodiment, by providing a first mounting port 27 communicating with the first cavity 21 on the first side 26 and / or the second side, the perovskite battery 40 can be conveniently installed in or removed from the first cavity 21, which is beneficial to improving the assembly efficiency of the perovskite battery 40 and enhancing its ease of use.

[0037] For example, the first side 26 and the second side are disposed opposite each other along the width direction of the carrier plate 20.

[0038] In some embodiments, the carrier plate 20 further includes a first side surface 26 and a second side surface disposed opposite to each other. The first side surface 26 is connected to its top surface 24 and bottom surface 25, and the second side surface is also connected to its top surface 24 and bottom surface 25. A second mounting port 28 communicating with the first cavity 21 is provided on the first side surface 26 and / or the second side surface. The mask 30 can be inserted and removed into the second cavity 22 via the second mounting port 28. It should be noted that the second mounting port 28 can be provided on the first side surface 26, or on the second side surface, or simultaneously on both the first side surface 26 and the second side surface; no limitation is made here. In this embodiment, by providing a second mounting port 28 communicating with the second cavity 22 on the first side surface 26 and / or the second side surface, the perovskite battery 40 can be conveniently installed in or removed from the second cavity 22, which is beneficial for improving the assembly efficiency of the perovskite battery 40 and enhancing its ease of use.

[0039] In some embodiments, the carrier plate 20 further includes a first side surface 26 connected to the top surface 24 and the bottom surface 25 respectively. The first side surface 26 is provided with a first mounting port 27 and a second mounting port 28. The first mounting port 27 communicates with the first cavity 21, and the second mounting port 28 communicates with the second cavity 22. The perovskite solar cell 40 can be plugged into the first cavity 21 through the first mounting port 27, and the mask 30 can be plugged into the second cavity 22 through the second mounting port 28. In this embodiment, by providing the first mounting port 27 and the second mounting port 28 on the same side of the carrier plate 20, the mask 30 and the perovskite solar cell 40 can be loaded and unloaded on the same side of the carrier plate 20, which is beneficial to further improve the convenience of operation.

[0040] In some embodiments, the first cavity 21 extends through the first side surface 26 and the second side surface, which simplifies the fabrication process of the carrier plate 20. The first mounting port 27 can also be understood as being formed by the intersection of the outline of the first cavity 21 and the line of intersection of the first side surface 26 or the second side surface.

[0041] In some embodiments, the second cavity 22 extends through the first side surface 26 and the second side surface, which simplifies the fabrication process of the carrier plate 20. The second mounting port 28 can also be understood as being formed by the intersection of the outline of the second cavity 22 and the first side surface 26 or the second side surface.

[0042] In some other embodiments of this application, the first cavity 21 may not extend through the first side 26 and the second side. For example, the first cavity 21 extends from the side with the first mounting port 27 (e.g., the first side 26) toward the direction close to the second side, and does not extend to the second side.

[0043] In some embodiments, the carrier plate 20 is adapted to the shape of the mounting cavity 11. This improves the assembly accuracy of the carrier plate 20 and enhances the structural compactness of the test fixture 100.

[0044] In some embodiments, the carrier plate 20 is fixed within the mounting cavity 11. Exemplarily, the carrier plate 20 is fixed within the mounting cavity 11 by a snap-fit ​​mechanism. Also exemplaryly, the carrier plate 20 is threadedly connected to the base 10 to fix the carrier plate 20 within the mounting cavity 11. It should be noted that the specific method by which the carrier plate 20 is fixed within the mounting cavity 11 is not a major improvement of this application and is not limited thereto.

[0045] In some embodiments, the carrier plate 20 is provided with a handle portion 29. In this embodiment, by providing the handle portion 29 on the carrier plate 20, the carrier plate 20 can be moved and loaded / unloaded more conveniently. Exemplarily, a handle portion 29 is provided at each end along the length direction of the carrier plate 20.

[0046] In some embodiments, the surface of the base 10 is provided with a third mounting opening, which communicates with the mounting cavity 11. The carrier plate 20 can be placed in or removed from the mounting cavity 11 through the third mounting opening. In this embodiment, by providing a third mounting opening on the surface of the base 10, which communicates with the mounting cavity 11, the assembly efficiency of the carrier plate 20 and the base 10 is improved.

[0047] In some embodiments, the mounting cavity 11 has a bottom wall 13 opposite to the third mounting port, a first electrical connection portion 121 and a second electrical connection portion 122 are disposed on the bottom wall 13, and a second cavity 22 is disposed close to the bottom wall 13. This facilitates electrical connection between the first electrical connection portion 121 and the second electrical connection portion 122 and the perovskite battery 40 located within the second cavity 22. Exemplarily, both the first electrical connection portion 121 and the second electrical connection portion 122 are conductive probes. After the carrier plate 20 is mounted on the base 10, the first electrical connection portion 121 and the second electrical connection portion 122 are electrically connected to the positive electrode 41 and the negative electrode 42 of the perovskite battery 40, respectively. Exemplarily, the side of the first cavity 21 facing the bottom wall 13 is open, allowing the positive electrode 41 and the negative electrode 42 of the perovskite battery 40 to be exposed, thereby enabling the first electrical connection portion 121 and the second electrical connection portion 122 to be electrically connected to the positive electrode 41 and the negative electrode 42 of the perovskite battery 40, respectively. For example, the side of the first cavity 21 facing the bottom wall 13 is provided with a clearance hole. The position of the clearance hole corresponds to the first electrical connection part 121 and the second electrical connection part 122. When the carrier plate 20 and the perovskite battery 40 therein are installed into the mounting cavity 11, the first electrical connection part 121 and the second electrical connection part 122 pass through the corresponding clearance hole and are electrically connected to the positive electrode 41 and the negative electrode 42 of the perovskite battery 40.

[0048] Furthermore, the first electrical connection 121 is electrically connected to an external inspection device via a conductor and the second electrical connection 122 via a conductive wire 14. Exemplarily, the base 10 also includes a conductive wire 14, with the first electrical connection 121 and the second electrical connection 122 respectively electrically connected to the corresponding conductive wire 14.

[0049] Furthermore, the first electrical connection 121 and / or the second electrical connection 122 are elastic conductive probes. In this embodiment, the first electrical connection 121 and / or the second electrical connection 122 are set as elastic conductive probes. By causing the perovskite cell 40 to abut against the first electrical connection 121 and / or the second electrical connection 122, slight elastic deformation is generated. This helps to maintain a stable and tight contact between the first electrical connection 121 and / or the second electrical connection 122 and the positive and negative electrodes 42 of the perovskite cell 40, which helps to improve the accuracy of the test.

[0050] This application embodiment also provides a test fixture 100 for a perovskite solar cell 40. The test fixture 100 includes a base 10, a carrier plate 20, and a mask 30. The base 10 has a mounting cavity 11, and the mounting cavity 11 has a first electrical connection part 121 and a second electrical connection part 122. The first electrical connection part 121 and the second electrical connection part 122 are respectively used for electrical connection with the positive electrode 41 and the negative electrode 42 of the perovskite solar cell 40. The mask 30 has a first light-transmitting hole 31. The carrier plate 20 is detachably connected to the base 10, and the carrier plate 20 has a first cavity 21 and a second cavity 22. The surface of the first cavity 21 is provided with a second light-transmitting hole 23, and the second cavity 22 is disposed between the first cavity 21 and the surface provided with the second light-transmitting hole 23. The light-transmitting hole connects the first cavity 21 and the second cavity 22. The perovskite cell 40 is disposed in the first cavity 21 and is adapted to the shape of the first cavity 21. The mask 30 is disposed in the second cavity 22. The second light-transmitting hole 23 is connected to the first cavity 21 through the first light-transmitting hole 31 so that the light can be irradiated on the light-absorbing surface of the perovskite cell 40 through the second light-transmitting hole 23 and the first light-transmitting hole 31. The orthogonal projection of the first light-transmitting hole 31 is located in the second light-transmitting hole 23. In this embodiment, a first cavity 21 is provided within the carrier plate 20, and the perovskite solar cell 40 is disposed within the first cavity 21 and adapted to the shape of the first cavity 21. This first cavity 21 limits and fixes the perovskite solar cell 40 within it. Compared with the clamping method, this effectively improves the problems of inaccurate test results caused by the large squeezing force applied to the perovskite solar cell 40 by the clamp during testing, and the easy scratching of the perovskite solar cell 40 by the clamp. Furthermore, the carrier plate 20 is always disposed within the mounting cavity 11 of the base 10. By keeping the base 10 in a fixed position, the distance between the perovskite solar cell 40 and the solar simulator can be easily fixed, which is beneficial to further improving the accuracy of the test results of the perovskite solar cell 40 in this application.

[0051] A second aspect of this application also provides a testing system, which includes a solar simulator, a digital source meter, a perovskite solar cell 40, and a test fixture 100. The solar simulator provides a test light source, and the digital source meter is electrically connected to a first electrical connection portion 121 and a second electrical connection portion 122 to acquire electrical signals generated during the test. Since the testing system in this application includes the aforementioned test fixture 100, it also possesses the beneficial effects of the test fixture 100, and will not be elaborated upon here. It should be noted that since the solar simulator and digital source meter are not major improvements of this application, existing equipment can be used, and will not be elaborated upon here.

[0052] For example, when testing the perovskite solar cell 40 using the testing system of this application, the specific process can be as follows: First, insert the metal mask 30 and the perovskite solar cell 40 into the second cavity 22 and the first cavity 21 of the carrier plate 20, respectively, with the FTO or ITO transparent side of the perovskite solar cell 40 facing the first light-transmitting hole 31 and the second light-transmitting hole 23. Then, install the carrier plate 20 into the mounting cavity 11 of the base 10, and electrically connect the positive electrode 41 and the negative electrode 42 on both sides of the perovskite solar cell 40 to the first electrical connection part 121 and the second electrical connection part 122, respectively (taking the electrical connection of the first electrical connection part 121 and the second electrical connection part 122 as a gold probe as an example, the positive electrode 41 and the negative electrode 42 of the perovskite solar cell 40 can be electrically connected to the corresponding gold probes). The first electrical connection part 121 and the second electrical connection part 122 are connected to the digital source meter through wires. Then, the solar simulator and digital source meter are turned on. The light generated by the solar simulator shines on the perovskite cell 40 through the second light-transmitting hole 23 and the first light-transmitting hole. The generated electrical signal is conducted through the electrodes to the first electrical connection part 121 and the second electrical connection part 122, and finally collected by the digital source meter, thereby realizing the testing of the perovskite cell 40.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0054] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0055] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0056] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0057] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0058] The above provides a detailed description of a test fixture and test system for perovskite solar cells provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A test fixture (100) for a perovskite solar cell (40), characterized in that, The test fixture (100) includes a base (10), a carrier plate (20), and a mask plate (30); The base (10) is provided with a mounting cavity (11), and the mounting cavity (11) is provided with a first electrical connection part (121) and a second electrical connection part (122); the first electrical connection part (121) and the second electrical connection part (122) are respectively used to electrically connect with the positive electrode (41) and the negative electrode (42) of the perovskite battery (40); The mask (30) is provided with a first light-transmitting hole (31); The carrier plate (20) is detachably connected to the base (10). The carrier plate (20) is provided with a first cavity (21) and a second cavity (22). The surface of the carrier plate (20) is provided with a second light-transmitting hole (23). The second cavity (22) is disposed between the first cavity (21) and the surface provided with the second light-transmitting hole (23). The light-transmitting hole connects the first cavity (21) and the second cavity (22). The perovskite solar cell (40) can be disposed in the first cavity (21) without being squeezed. The mask plate (30) is disposed in the second cavity (22). The second light-transmitting hole (23) is connected to the first cavity (21) through the first light-transmitting hole (31) so that the light can be irradiated on the light-absorbing surface of the perovskite solar cell (40) through the second light-transmitting hole (23) and the first light-transmitting hole (31). The orthographic projection of the first light-transmitting hole (31) is located in the second light-transmitting hole (23).

2. The test fixture (100) as described in claim 1, characterized in that, The carrier plate (20) includes a top surface (24) and a bottom surface (25) disposed opposite to each other. The second light-transmitting hole (23) is disposed on the top surface (24), and the first cavity (21) is disposed close to the bottom surface (25).

3. The test fixture (100) as described in claim 2, characterized in that, The carrier plate (20) further includes a first side (26) and a second side disposed opposite to each other. The first side (26) is connected to the top surface (24) and the bottom surface (25) respectively, and the second side is connected to the top surface (24) and the bottom surface (25) respectively. The first side (26) and / or the second side are provided with a first mounting port (27) communicating with the first cavity (21). The perovskite battery (40) can be plugged into the first cavity (21) through the first mounting port (27).

4. The test fixture (100) as described in claim 2, characterized in that, The carrier plate (20) further includes a first side (26) and a second side disposed opposite to each other. The first side (26) is connected to the top surface (24) and the bottom surface (25) respectively, and the second side is connected to the top surface (24) and the bottom surface (25) respectively. The first side (26) and / or the second side are provided with a second mounting port (28) communicating with the first cavity (21). The mask (30) can be inserted and removed into the second cavity (22) through the second mounting port (28).

5. The test fixture (100) as described in claim 2, characterized in that, The carrier plate (20) further includes a first side surface (26) connected to the top surface (24) and the bottom surface (25) respectively. The first side surface (26) is provided with a first mounting port (27) and a second mounting port (28). The first mounting port (27) communicates with the first cavity (21), and the second mounting port (28) communicates with the second cavity (22). The perovskite battery (40) can be plugged into the first cavity (21) through the first mounting port (27), and the mask plate (30) can be plugged into the second cavity (22) through the second mounting port (28).

6. The test fixture (100) as described in claim 1, characterized in that, The carrier plate (20) is adapted to the shape of the mounting cavity (11); And / or, the carrier plate (20) is snapped into the mounting cavity (11); The base (10) has a third mounting port on its surface, which communicates with the mounting cavity (11), and the carrier plate (20) can be placed in the mounting cavity (11) or removed from the mounting cavity (11) through the third mounting port.

7. The test fixture (100) as described in claim 6, characterized in that, The mounting cavity (11) has a bottom wall (13) opposite to the third mounting port, the first electrical connection part (121) and the second electrical connection part (122) are disposed on the bottom wall (13), and the second cavity (22) is disposed close to the bottom wall (13); And / or, the carrier plate (20) is provided with a handle (29); And / or, the first electrical connection (121) is a conductive probe; And / or, the second electrical connection (122) is a conductive probe; And / or, there are multiple mask plates (30), and the area of ​​the first light-transmitting hole (31) on each mask plate (30) is different.

8. The test fixture (100) as described in claim 7, characterized in that, The first electrical connection portion (121) and / or the second electrical connection portion (122) are elastic conductive probes.

9. A test fixture (100) for a perovskite solar cell (40), characterized in that, The test fixture (100) includes a base (10), a carrier plate (20), and a mask plate (30); The base (10) is provided with a mounting cavity (11), and the mounting cavity (11) is provided with a first electrical connection part (121) and a second electrical connection part (122); the first electrical connection part (121) and the second electrical connection part (122) are respectively used to electrically connect with the positive electrode (41) and the negative electrode (42) of the perovskite battery (40); The mask (30) is provided with a first light-transmitting hole (31); The carrier plate (20) is detachably connected to the base (10). The carrier plate (20) is provided with a first cavity (21) and a second cavity (22). The surface of the carrier plate (20) is provided with a second light-transmitting hole (23). The second cavity (22) is disposed between the first cavity (21) and the surface provided with the second light-transmitting hole (23). The light-transmitting hole connects the first cavity (21) and the second cavity (22). The perovskite solar cell (40) is located in the first cavity (21) and is adapted to the shape of the first cavity (21). The mask plate (30) is disposed in the second cavity (22). The second light-transmitting hole (23) is connected to the first cavity (21) through the first light-transmitting hole (31) so that the light can be irradiated on the light-absorbing surface of the perovskite solar cell (40) through the second light-transmitting hole (23) and the first light-transmitting hole (31). The orthographic projection of the first light-transmitting hole (31) is located in the second light-transmitting hole (23).

10. A testing system, characterized in that, The testing system includes a solar simulator, a digital source meter, a perovskite cell (40), and a test fixture (100) as described in any one of claims 1 to 9; the solar simulator is used to provide a test light source, and the digital source meter is electrically connected to the first electrical connection part (121) and the second electrical connection part (122) to acquire electrical signals generated during the test.

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