Perovskite solar cell and electronic device

Abstract

The utility model discloses a perovskite solar cell and an electronic device. The titanium ore solar cell comprises a light-transmitting bottom plate, a functional layer structure, an insulating film and a cover plate which are stacked in sequence, a first abutting position and a second abutting position which are spaced from each other are arranged between the light-transmitting bottom plate and the cover plate, the cover plate is provided with two lead-out holes, and a first conductive strip and a second conductive strip are fixed to the surface, facing the insulating film, of the cover plate. The two ends of the first conductive strip and the two ends of the second conductive strip are each provided with a conductive terminal, and the conductive terminals located in the leading-out holes are at least partially exposed out of the leading-out holes, the conductive terminals located in the first abutting positions abut against the positive electrode lead, and the conductive terminals located in the second abutting positions abut against the negative electrode lead. According to the technical scheme of the utility model, the problems that the perovskite solar cell is inconvenient to assemble and low in production efficiency can be solved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a perovskite solar cell and electronic device. Background Technology

[0002] Perovskite solar cells are solar cells that use perovskite-type organometal halide semiconductors as light-absorbing materials, and belong to the third generation of solar cells.

[0003] In existing perovskite solar cell structures, the positive and negative leads of the cell need to pass through the lead-out holes of the cover glass, respectively. In particular, when a lead passes through one lead-out hole, in order to prevent the lead from detaching from that lead-out hole, the space between the cover glass and the substrate is limited, which is inconvenient to operate and results in low production efficiency. Therefore, it is difficult to achieve automated production. Utility Model Content

[0004] The main purpose of this invention is to propose a perovskite solar cell, which aims to solve the problems of inconvenient assembly and low production efficiency of perovskite solar cells.

[0005] To achieve the above objectives, the perovskite solar cell proposed in this utility model includes a light-transmitting substrate, a functional layer structure, an insulating film, and a cover plate stacked sequentially. The light-transmitting substrate and the cover plate are provided with a first abutment position and a second abutment position that are spaced apart from each other.

[0006] The functional layer structure has a positive electrode lead and a negative electrode lead, the positive electrode lead extending to the first contact position and the negative electrode lead extending to the second contact position;

[0007] The cover plate has two outlet holes;

[0008] The perovskite solar cell further includes a first conductive strip and a second conductive strip arranged at intervals. The first conductive strip and the second conductive strip are both fixed to the surface of the cover plate facing the insulating film. Each end of the first conductive strip and each end of the second conductive strip is provided with a conductive terminal.

[0009] One end of the first conductive strip extends to one of the lead-out holes, and the other end of the first conductive strip extends to the first abutment position;

[0010] One end of the second conductive strip extends to another lead-out hole, and the other end of the second conductive strip extends to the second abutment position;

[0011] The conductive terminal located in the lead-out hole is at least partially exposed in the lead-out hole;

[0012] The conductive terminal located at the first contact position abuts against the positive lead;

[0013] The conductive terminal located at the second contact position abuts against the negative lead.

[0014] In one embodiment, the functional layer structure includes a first electrode layer, a hole transport layer, a perovskite layer, an electron transport layer, and a second electrode layer stacked sequentially. The end of the positive electrode lead away from the first contact point is connected to the first electrode layer, and the end of the negative electrode lead away from the second contact point is connected to the second electrode layer.

[0015] In one embodiment, the insulating film is provided with a first through hole and a second through hole, the first through hole being located at the first abutment position, the second through hole being used to expose the positive electrode lead, the second through hole being located at the second abutment position, and the second through hole being used to expose the negative electrode lead.

[0016] In one embodiment, the first via and the second via are located at a distance from each other at the periphery of the insulating film.

[0017] In one embodiment, the functional layer structure is provided in multiple ways, and the multiple functional layer structures are connected in parallel to each other and arranged sequentially along the width direction of the perovskite solar cell.

[0018] The first conductive strip includes a first branch and a second branch. The first branch has a plurality of conductive terminals that are one-to-one abutting against the negative leads of the plurality of functional layer structures. One end of the second branch is connected to the first branch, and the other end of the second branch extends to a lead-out hole and is provided with a conductive terminal. A plurality of first through holes are provided, and the plurality of first through holes are used to allow the conductive terminals of the first branch to pass through the insulating film.

[0019] In one embodiment, the perovskite solar cell further includes two conductive sheets, which are respectively and correspondingly covered on the side of the two lead-out holes away from the insulating film, and both conductive sheets are fixedly connected to the cover plate.

[0020] The conductive sheet and the conductive terminal are in contact with each other.

[0021] In one embodiment, the conductive sheet is bonded to the cover plate with a sealant, the sealant covering the periphery of the conductive sheet.

[0022] In one embodiment, the middle portion of the conductive sheet facing away from the cover plate is exposed in the sealant.

[0023] In one embodiment, the first conductive strip is formed by coating the light-transmitting substrate with silver paste;

[0024] And / or, the second conductive strip is formed by coating the light-transmitting substrate with silver paste;

[0025] And / or, the insulating film is made of POE;

[0026] And / or, the perovskite solar cell further includes an encapsulating adhesive disposed between the light-transmitting substrate and the cover plate, and surrounding the functional layer structure.

[0027] This invention also proposes an electronic device, including an electronic device and a perovskite solar cell as described above, wherein the electronic device and the perovskite solar cell are electrically connected.

[0028] In the technical solution of this utility model, by setting a first conductive strip and a second conductive strip with conductive terminals on the cover plate, the conductive terminals of the first conductive strip and the second conductive strip abut against the positive lead and the negative lead of the functional layer structure respectively at the abutment position, eliminating the need for complicated perforation operations, simplifying the assembly process, and thus effectively improving production efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A schematic diagram of a perovskite solar cell according to an embodiment of the present invention;

[0031] Figure 2 for Figure 1 Cross-sectional view of a perovskite solar cell;

[0032] Figure 3 A schematic diagram of the structure of the electronic device provided by this utility model.

[0033] Explanation of icon numbers:

[0034] 1000. Electronic equipment; 100. Perovskite solar cell; 10. Transparent substrate; 20. Functional layer structure; 21. Positive lead; 23. Negative lead; 30. Insulating film; 30a. First via; 30b. Second via; 40. Cover plate; 40a. Lead-out hole; 50. First conductive strip; 60. Second conductive strip; 70. Conductive terminal; 100a. First contact point; 100b. Second contact point; 80. Conductive sheet; 81. Sealant; 90. Encapsulating adhesive; 300. Electronic device.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] This invention proposes a perovskite solar cell 100.

[0040] Please see Figure 1 and Figure 2In one embodiment of the perovskite solar cell 100 of this utility model, the perovskite solar cell 100 includes a light-transmitting substrate 10, a functional layer structure 20, an insulating film 30, and a cover plate 40 stacked sequentially. A first abutment position 100a and a second abutment position 100b are provided between the light-transmitting substrate 10 and the cover plate 40, spaced apart from each other. The functional layer structure 20 has a positive electrode lead 21 and a negative electrode lead 23. The positive electrode lead 21 extends to the first abutment position 100a, and the negative electrode lead 23 extends to the second abutment position 100b. The cover plate 40 has two lead-out holes 40a. The perovskite solar cell 100 also includes a first conductive strip 50 and a second conductive strip 60 arranged at intervals. Both the first conductive strip 50 and the second conductive strip 60 are fixed to the surface of the cover plate 40 facing the insulating film 30. A conductive terminal 70 is provided at both ends of the first conductive strip 50 and the second conductive strip 60. One end of the first conductive strip 50 extends to a lead-out hole 40a, and the other end of the first conductive strip 50 extends to a first abutment position 100a. One end of the second conductive strip 60 extends to another lead-out hole 40a, and the other end of the second conductive strip 60 extends to a second abutment position 100b. The conductive terminal 70 located in the lead-out hole 40a is at least partially exposed in the lead-out hole 40a. The conductive terminal 70 located in the first abutment position 100a abuts against the positive lead 21. The conductive terminal 70 located in the second abutment position 100b abuts against the negative lead 23.

[0041] Furthermore, the light-transmitting substrate 10 allows sunlight to pass through and illuminate the functional layer structure 20, and can be made of glass, transparent plastic, or other effective transparent materials. The functional layer structure 20 is the core component of the perovskite solar cell 100, responsible for light absorption and charge separation and transmission. The insulating film 30 can be POE (polyolefin elastomer), PET (polyethylene terephthalate), or other effective insulating materials. The cover plate 40 protects the internal structure from external environmental influences and can be made of glass, plastic, or other effective materials. The first conductive strip 50 and the second conductive strip 60 are used to transmit current; they are typically made of metallic materials, such as silver or copper conductive strips. In other embodiments, the first conductive strip 50 and the second conductive strip 60 can also be made of other effective conductive materials. The conductive terminal 70 can be made of silver, copper, or other effective conductive materials. The first conductive strip 50 and the conductive terminal 70 can be welded together, integrally formed, or connected using other effective methods. The connection between the second conductive strip 60 and the conductive terminal 70 is similar and will not be described further here. The first conductive strip 50 can be fixedly connected to the cover plate 40 by adhesive bonding, integral molding, or other effective connection methods. The fixed connection between the second conductive strip 60 and the cover plate 40 is similar and will not be described in detail here.

[0042] Understandably, by providing a first conductive strip 50 and a second conductive strip 60 with conductive terminals 70 on the cover plate 40, the conductive terminals 70 of the first conductive strip 50 and the second conductive strip 60 abut against the positive lead 21 and the negative lead 23 of the functional layer structure 20 respectively at the abutment position, there is no need for complicated perforation operations, which simplifies the assembly process and effectively improves production efficiency.

[0043] Specifically, after the functional layer structure 20 and the insulating film 30 are stacked on the light-transmitting base plate 10, and the first conductive strip 50, the second conductive strip 60 and their respective conductive terminals 70 are fixed on the cover plate 40, the light-transmitting base plate 10 and the cover plate 40 are assembled accordingly. That is, the conductive terminals 70 of the first conductive strip 50 on the cover plate 40 abut against the positive lead 21 on the light-transmitting base plate 10, and the conductive terminals 70 of the second conductive strip 60 on the cover plate 40 abut against the negative lead 23 on the light-transmitting base plate 10. In the whole process, there is no need for complicated perforation operations, which simplifies the assembly process and effectively improves production efficiency.

[0044] Please see Figure 2 In one embodiment of the perovskite solar cell 100 of this utility model, the functional layer structure 20 includes a first electrode layer, a hole transport layer, a perovskite layer, an electron transport layer and a second electrode layer stacked in sequence. The positive electrode lead 21 is connected to the first electrode layer at one end away from the first contact position 100a, and the negative electrode lead 23 is connected to the second electrode layer at one end away from the second contact position 100b.

[0045] The first electrode layer can be ITO (indium tin oxide), AZO (zinc oxide), or other effective transparent conductive materials. The hole transport layer is used to transport holes. The perovskite layer is the active layer of the solar cell, used to absorb light and generate electron-hole pairs. The electron transport layer is used to guide the generated electrons to the second electrode layer. It effectively collects electrons and prevents the recombination of holes with electrons. The second electrode layer is used to collect and export electrons; it can be metallic aluminum, silver, or other conductive materials.

[0046] Please see Figure 1 and Figure 2In one embodiment of the perovskite solar cell 100 of this utility model, the insulating film 30 is provided with a first via 30a and a second via 30b. The first via 30a is located at the first contact position 100a, and the second via 30b is used to expose the positive electrode lead 21, the second via 30b is located at the second contact position 100b, and the second via 30b is used to expose the negative electrode lead 23. It can be understood that by providing the first via 30a and the second via 30b on the insulating film 30, the first contact position 100a and the second contact position 100b do not need to be located outside the insulating film 30, thereby avoiding the increase in the area of ​​the perovskite solar cell 100 due to reserving the first contact position 100a and the second contact position 100b.

[0047] Please see Figure 1 and Figure 2 In one embodiment of the perovskite solar cell 100 of this invention, the first via 30a and the second via 30b are located at intervals around the periphery of the insulating film 30. Understandably, by respectively arranging the first via 30a and the second via 30b around the periphery of the insulating film 30, damage to the insulating film 30 can be reduced, allowing the insulating film 30 to be preserved relatively intact; on the other hand, it facilitates the lead layout of the first conductive strip 50 and the second conductive strip 60, and opening holes around the periphery of the insulating film 30 is relatively simple and easy.

[0048] In one embodiment of the perovskite solar cell 100 of this utility model, multiple functional layer structures 20 are provided, which are connected in parallel and arranged sequentially along the width direction of the perovskite solar cell 100. The first conductive strip 50 includes a first branch and a second branch. The first branch has multiple conductive terminals 70 that correspond one-to-one with the negative electrode leads 23 of the multiple functional layer structures 20. One end of the second branch is connected to the first branch, and the other end of the second branch extends to a lead-out hole 40a and is provided with a conductive terminal 70. Multiple first through holes 30a are provided, which allow the conductive terminals 70 of the first branch to pass through the insulating film 30.

[0049] Understandably, connecting multiple functional layer structures 20 in parallel can increase the total output current of the perovskite solar cell 100. The branch design of the first conductive strip 50 simplifies the complex parallel wiring. Furthermore, the first branch is fixed on the cover plate 40, avoiding the need for replicating wiring designs on multiple functional layer structures 20 for parallel connection. Moreover, after the cover plate 40 is placed on the insulating film 30, it not only enables the conductive terminals 70 of the first conductive strip 50 and the conductive terminals 70 of the second conductive strip 60 to abut against the positive electrode lead 21 and the negative electrode lead 23 of the functional layer structure 20 respectively, avoiding complex perforation operations; but also enables parallel connection between the negative electrode leads 23 of multiple functional layer structures 20, effectively simplifying the assembly of the perovskite solar cell 100 and effectively improving production efficiency.

[0050] Please see Figure 1 and Figure 2 In one embodiment of the perovskite solar cell 100 of this utility model, the perovskite solar cell 100 further includes two conductive sheets 80, which are respectively and correspondingly covered on the side of the two lead-out holes 40a away from the insulating film 30. Both conductive sheets 80 are fixedly connected to the cover plate 40. The conductive sheets 80 abut against the conductive terminals 70.

[0051] Understandably, the arrangement of the conductive sheet 80 provides a larger contact area, facilitating connection to external circuits, such as through soldering or clamping, and contributing to improved electrical connection stability. One conductive sheet 80 covers the first lead-out hole 40a, and another conductive sheet 80 covers the second lead-out hole 40a, preventing dust and moisture from entering the battery and improving encapsulation performance. Furthermore, the conductive sheets 80 and conductive terminals 70 are electrically connected via mutual contact, facilitating assembly and effectively improving production efficiency.

[0052] Please see Figure 1 and Figure 2 In one embodiment of the perovskite solar cell 100 of this utility model, the conductive sheet 80 is bonded to the cover plate 40 by a sealant 81, and the sealant 81 covers the periphery of the conductive sheet 80.

[0053] Understandably, the use of sealant 81 prevents air and moisture from entering around the conductive sheet 80, protecting the electrical contact area between the conductive sheet 80 and the conductive terminal 70. Furthermore, the adhesive method ensures that the conductive sheet 80 is firmly attached to the cover plate 40, effectively preventing the conductive sheet 80 from loosening or shifting.

[0054] Please see Figure 1 In one embodiment of the perovskite solar cell 100 of this utility model, the middle portion of the conductive sheet 80 facing away from the cover plate 40 is exposed to the sealant 81. Specifically, the sealant 81 may be butyl rubber, modified silicone, or other effective adhesives.

[0055] Understandably, the exposed conductive sheet 80 area provides a convenient connection interface for direct connection to external circuits, improving installation convenience. Furthermore, the sealant 81 covers the periphery of the conductive sheet 80, leaving only the central portion exposed, protecting the edges while still meeting electrical connection requirements.

[0056] Please see Figure 1 and Figure 2 In one embodiment of the perovskite solar cell 100 of this invention, the first conductive strip 50 is formed by coating a light-transmitting substrate 10 with silver paste. Understandably, silver paste has excellent conductivity, and forming the first conductive strip 50 with silver paste can reduce resistance and energy loss.

[0057] Please see Figure 1 and Figure 2 In one embodiment of the perovskite solar cell 100 of this invention, the second conductive strip 60 is formed by coating a light-transmitting substrate 10 with silver paste. Understandably, silver paste has excellent conductivity, and forming the second conductive strip 60 with silver paste can reduce resistance and energy loss.

[0058] Please see Figure 2 In one embodiment of the perovskite solar cell 100 of this utility model, the insulating film 30 is made of POE. POE (polyolefin elastomer) is a novel thermoplastic elastomer material. Understandably, POE material, as the insulating film 30, possesses good flexibility, weather resistance, and electrical insulation properties, effectively protecting the functional layer structure 20 and extending the lifespan of the perovskite solar cell 100.

[0059] Please see Figure 2 In one embodiment of the perovskite solar cell 100 of this utility model, the perovskite solar cell 100 further includes an encapsulating adhesive 90, which is disposed between the light-transmitting substrate 10 and the cover plate 40 and surrounds the functional layer structure 20. Specifically, the encapsulating adhesive 90 may be butyl rubber, modified silicone, or other effective adhesives.

[0060] Please see Figure 3This utility model also proposes an electronic device 1000, including an electronic device 300 and the perovskite solar cell 100 as described above, wherein the electronic device 300 and the perovskite solar cell 100 are electrically connected. The specific structure of the perovskite solar cell 100 is as described in the above embodiments. Since the electronic device 1000 adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The electronic device 300 can be a wearable device, such as a smartwatch, health monitoring device, etc.; a portable electronic product, such as a smartphone, tablet computer, etc.; or an Internet of Things (IoT) device, such as a sensor, environmental monitoring device, etc.

[0061] Understandably, the perovskite solar cell 100 and the electronic device 300 are electrically connected. The perovskite solar cell 100 can absorb light to generate electricity, thereby providing power to the electronic device 300 and extending the usage time of the electronic device 300.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A perovskite solar cell, characterized in that, It includes a light-transmitting base plate, a functional layer structure, an insulating film, and a cover plate stacked in sequence, wherein the light-transmitting base plate and the cover plate are provided with a first abutment position and a second abutment position that are spaced apart from each other; The functional layer structure has a positive electrode lead and a negative electrode lead, the positive electrode lead extending to the first contact position and the negative electrode lead extending to the second contact position; The cover plate has two outlet holes; The perovskite solar cell further includes a first conductive strip and a second conductive strip arranged at intervals. The first conductive strip and the second conductive strip are both fixed to the surface of the cover plate facing the insulating film. Each end of the first conductive strip and each end of the second conductive strip is provided with a conductive terminal. One end of the first conductive strip extends to one of the lead-out holes, and the other end of the first conductive strip extends to the first abutment position; One end of the second conductive strip extends to another lead-out hole, and the other end of the second conductive strip extends to the second abutment position; The conductive terminal located in the lead-out hole is at least partially exposed in the lead-out hole; The conductive terminal located at the first contact position abuts against the positive lead; The conductive terminal located at the second contact position abuts against the negative lead.

2. The perovskite solar cell as described in claim 1, characterized in that, The functional layer structure includes a first electrode layer, a hole transport layer, a perovskite layer, an electron transport layer, and a second electrode layer stacked sequentially. The end of the positive electrode lead away from the first contact point is connected to the first electrode layer, and the end of the negative electrode lead away from the second contact point is connected to the second electrode layer.

3. The perovskite solar cell according to claim 1, characterized in that, The insulating film is provided with a first through hole and a second through hole. The first through hole is located at the first contact position, and the second through hole is used to expose the positive lead. The second through hole is located at the second contact position and is used to expose the negative lead.

4. The perovskite solar cell according to claim 3, characterized in that, The first via and the second via are located at intervals around the periphery of the insulating film.

5. The perovskite solar cell as described in claim 3, characterized in that, The functional layer structure is provided in multiple ways, and the multiple functional layer structures are connected in parallel to each other and arranged sequentially along the width direction of the perovskite solar cell. The first conductive strip includes a first branch and a second branch. The first branch has a plurality of conductive terminals that are one-to-one abutting against the negative leads of the plurality of functional layer structures. One end of the second branch is connected to the first branch, and the other end of the second branch extends to a lead-out hole and is provided with a conductive terminal. A plurality of first through holes are provided, and the plurality of first through holes are used to allow the conductive terminals of the first branch to pass through the insulating film.

6. The perovskite solar cell according to claim 1, characterized in that, The perovskite solar cell also includes two conductive sheets, which are respectively covered on the side of the two lead-out holes away from the insulating film, and both conductive sheets are fixedly connected to the cover plate. The conductive sheet and the conductive terminal are in contact with each other.

7. The perovskite solar cell according to claim 6, characterized in that, The conductive sheet is bonded to the cover plate with sealant, and the sealant covers the periphery of the conductive sheet.

8. The perovskite solar cell as described in claim 7, characterized in that, The middle portion of the conductive sheet, facing away from the cover plate, is exposed in the sealant.

9. The perovskite solar cell according to claim 1, characterized in that, The first conductive strip is formed by coating the light-transmitting substrate with silver paste; And / or, the second conductive strip is formed by coating the light-transmitting substrate with silver paste; And / or, the insulating film is made of POE; And / or, the perovskite solar cell further includes an encapsulating adhesive disposed between the light-transmitting substrate and the cover plate, and surrounding the functional layer structure.

10. An electronic device, characterized in that, It includes an electronic device and a perovskite solar cell as described in any one of claims 1 to 9, wherein the electronic device and the perovskite solar cell are electrically connected.

Images