Unijunction perovskite cell module and solar cell system
By using a glass fiber adhesive film layer in a single-junction perovskite solar cell module, the problems of glass cracking and perovskite layer peeling in the lamination process are solved, enhancing the strength and stability of the module and improving the reliability of the solar cell system.
Patent Information
- Application Number
- CN202421330839.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
Existing single-junction perovskite solar cell modules are prone to cracking and peeling of the perovskite layer during the lamination process, which affects their stability and reliability and restricts their mass production.
The single-junction perovskite solar cell module is reinforced with a glass fiber film layer, which includes a combination of glass fiber materials and elastic materials to disperse thermal expansion stress, enhance dimensional stability, and prevent laminated glass from cracking and perovskite layer from peeling off.
This improves the strength and reliability of single-junction perovskite solar cell modules, avoids laminated glass cracking and perovskite layer peeling, and enhances the reliability of solar cell systems.
Smart Images
Figure CN223540890U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of perovskite solar cell technology, and particularly relates to a single-junction perovskite solar cell module and solar cell system. Background Technology
[0002] Single-junction perovskite solar cells have advantages such as low cost and high photoelectric conversion efficiency. After years of rapid development, the efficiency of single-junction perovskite solar cells has exceeded 25%, and they are considered one of the most promising photovoltaic technologies for future applications. Currently, the stability of single-junction perovskite solar cells needs improvement, which places higher demands on module packaging and restricts their mass production.
[0003] Currently, some single-junction perovskite solar cell modules use non-steel substrate glass for their front panels, which is prone to cracking during the lamination process. Furthermore, the surface flatness of tempered glass poses a significant challenge to the fabrication of perovskite devices, hindering its widespread adoption. In addition, current encapsulation methods using encapsulants exhibit poor dimensional stability, making it easy for the perovskite layer to peel off during lamination. Utility Model Content
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a single-junction perovskite solar cell module and solar cell system, which enhances the strength of the single-junction perovskite solar cell module, making it less prone to cracking during the lamination process and less prone to peeling off the perovskite layer.
[0005] In a first aspect, this application provides a single-junction perovskite solar cell module, comprising:
[0006] Base;
[0007] A fiberglass film layer is disposed on one side of the substrate;
[0008] Water-blocking adhesive is applied to the side of the substrate near the fiberglass adhesive film layer and is arranged around the fiberglass adhesive film layer.
[0009] A single-junction perovskite functional layer is located on the side of the glass fiber adhesive film layer and the water-blocking adhesive away from the substrate.
[0010] According to the single-junction perovskite solar cell module of this application, by setting a glass fiber film on the single-junction perovskite functional layer, the single-junction perovskite solar cell module can be enhanced, avoiding the problem of laminated glass cracking or the flatness of the glass after tempering not meeting the fabrication process of perovskite devices. At the same time, the glass fiber film layer can disperse thermal expansion stress, enhance dimensional stability, and prevent the film from peeling off the perovskite layer.
[0011] According to one embodiment of this application, the material of the fiberglass film layer includes an elastic material and a fiberglass material, wherein the fiberglass material includes shredded fiberglass or fiberglass cloth.
[0012] According to one embodiment of this application, the diameter of the shredded glass fiber ranges from 10μm to 20μm, the length ranges from 3mm to 6mm, and the diameter of the glass fiber cloth ranges from 12μm to 23μm.
[0013] According to one embodiment of this application, the fiberglass adhesive film layer includes:
[0014] A first thermoplastic polyolefin elastic layer is disposed on one side of the substrate;
[0015] A layer of broken glass fiber is disposed on the side of the first thermoplastic polyolefin elastic layer away from the substrate;
[0016] The single-junction perovskite functional layer is located on the side of the broken glass fiber layer away from the first thermoplastic polyolefin elastic layer.
[0017] According to one embodiment of this application, the fiberglass adhesive film layer includes:
[0018] A second thermoplastic polyolefin elastic layer is disposed on one side of the substrate;
[0019] A mixed layer is disposed on the side of the second thermoplastic polyolefin elastic layer away from the substrate, and the mixed layer is mixed with thermoplastic polyolefin and shredded glass fiber;
[0020] The third thermoplastic polyolefin elastic layer is disposed on the side of the mixed layer away from the second thermoplastic polyolefin elastic layer;
[0021] The single-junction perovskite functional layer is located on the side of the third thermoplastic polyolefin elastic layer away from the mixed layer.
[0022] According to one embodiment of this application, the fiberglass adhesive film layer includes:
[0023] The fourth thermoplastic polyolefin elastic layer is disposed on one side of the substrate;
[0024] A fiberglass cloth layer is disposed on the side of the fourth thermoplastic polyolefin elastic layer away from the substrate;
[0025] The fifth thermoplastic polyolefin elastic layer is located on the side of the fiberglass cloth layer away from the fourth thermoplastic polyolefin elastic layer.
[0026] The single-junction perovskite functional layer is located on the side of the fifth thermoplastic polyolefin elastic layer away from the fiberglass cloth layer.
[0027] According to one embodiment of this application, the glass fiber material is colored glass fiber.
[0028] According to one embodiment of this application, the single-junction perovskite solar cell module further includes:
[0029] The junction box is located on the side of the single-junction perovskite functional layer away from the glass fiber film layer, and the junction box is electrically connected to the single-junction perovskite functional layer.
[0030] According to one embodiment of this application, the substrate material is glass.
[0031] Secondly, this application provides a solar cell system, which includes a single-junction perovskite cell module according to the foregoing.
[0032] According to the solar cell system of this application, the single-junction perovskite solar cell module has higher flatness and dimensional stability after the laminated glass breaks or the glass is tempered, and the perovskite layer is not easy to peel off, which makes the solar cell system more reliable.
[0033] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0035] Figure 1 This is one of the structural schematic diagrams of a single-junction perovskite solar cell module provided in the embodiments of this application;
[0036] Figure 2 This is the second schematic diagram of the structure of the single-junction perovskite solar cell module provided in the embodiments of this application;
[0037] Figure 3 This is the third schematic diagram of the structure of the single-junction perovskite solar cell module provided in the embodiments of this application;
[0038] Figure 4 This is the fourth schematic diagram of the single-junction perovskite solar cell module provided in the embodiments of this application.
[0039] Figure label:
[0040] The substrate is 10, the fiberglass film layer is 20, the first thermoplastic polyolefin elastic layer is 21, the second thermoplastic polyolefin elastic layer is 22, the third thermoplastic polyolefin elastic layer is 23, the fourth thermoplastic polyolefin elastic layer is 24, the fifth thermoplastic polyolefin elastic layer is 25, the shredded fiberglass layer is 26, the mixed layer is 27, the fiberglass cloth layer is 28, the water-blocking adhesive is 30, the single-junction perovskite functional layer is 40, and the junction box is 50. Detailed Implementation
[0041] The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings. In the drawings, for clarity, the dimensions of layers, regions, elements, and their relative dimensions may be exaggerated. The same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0042] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this disclosure, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. And the discussion of a second element, component, area, layer, or portion does not imply that the first element, component, area, layer, or portion necessarily exists in this disclosure.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0044] Reference Figure 1 , Figure 1 The structure of a single-junction perovskite solar cell module is shown. One embodiment of this application proposes a single-junction perovskite solar cell module.
[0045] In this embodiment, the single-junction perovskite solar cell module includes a substrate 10, a glass fiber adhesive film layer 20, a water-blocking adhesive 30, and a single-junction perovskite functional layer 40. The glass fiber adhesive film layer 20 is disposed on one side of the substrate 10, the water-blocking adhesive 30 is disposed on the side of the substrate 10 closest to the glass fiber adhesive film layer 20 and arranged around the glass fiber adhesive film layer 20, and the single-junction perovskite functional layer 40 is disposed on the side of the glass fiber adhesive film layer 20 and the water-blocking adhesive 30 furthest from the substrate 10.
[0046] The substrate 10 serves as the battery substrate, providing support for the multilayer thin-film structure. Furthermore, the substrate 10 also isolates the interior of the single-junction perovskite battery module from the exterior, protecting sensitive internal materials and structures from oxidation or corrosion.
[0047] As an example, the material of the substrate 10 can be glass.
[0048] In other examples, the glass of the substrate 10 can be tempered glass.
[0049] In related technologies, the encapsulant film of single-junction perovskite solar cell modules uses a simple thermoplastic encapsulant film. Because it lacks cross-linking points, thermal expansion is easily observed during the lamination process, resulting in poor dimensional stability and making it easy to peel off the single-junction perovskite functional layer 40. In contrast, this embodiment uses glass fiber material to form the encapsulant film, which can disperse thermal expansion stress, enhance dimensional stability, and prevent the encapsulant film from peeling off the perovskite layer.
[0050] Fiberglass materials can be shredded fiberglass or fiberglass cloth. Shredded fiberglass refers to ground glass fibers, which are short fibers obtained by breaking glass fibers into smaller pieces. Fiberglass cloth refers to fiberglass fabric, which is made from glass spheres or waste glass through processes such as high-temperature melting, drawing, winding, and weaving.
[0051] Water-blocking adhesive 30 can be made of butyl rubber, which provides excellent sealing and waterproofing performance while ensuring the stability and safety of the component. Other organic-based encapsulation materials, such as epoxy resin and polyvinyl alcohol, or inorganic-based encapsulation materials, such as silicone, can also be used.
[0052] In this embodiment, the single-junction perovskite functional layer 40 can be a formal structure or an inverse structure. A formal structure single-junction perovskite functional layer 40 may include stacked conductive glass, an electron transport layer, a perovskite layer, a hole transport layer, and a metal counter electrode layer. An inverse structure single-junction perovskite functional layer 40 may include stacked conductive glass, a hole transport layer, a perovskite layer, an electron transport layer, and a metal counter electrode layer.
[0053] In some embodiments, the single-junction perovskite solar cell module further includes a junction box 50, which is disposed on the side of the single-junction perovskite functional layer 40 away from the glass fiber film layer 20, and is electrically connected to the single-junction perovskite functional layer 40.
[0054] Junction box 50 is used to collect the current generated by the single-junction perovskite solar cell module. The junction box 50 may contain a positive electrode and a negative electrode, which can be electrically connected to the conductive glass or metal counter electrode layer in the single-junction perovskite functional layer 40 via conductive elements.
[0055] According to the single-junction perovskite solar cell module of this application, by setting a glass fiber adhesive film layer 20 on the single-junction perovskite functional layer 40, the single-junction perovskite solar cell module can be enhanced, avoiding the problem of laminated glass cracking or the flatness of the glass after tempering not meeting the fabrication process of perovskite devices. At the same time, the glass fiber adhesive film layer 20 can disperse thermal expansion stress, enhance dimensional stability, and prevent the adhesive film from peeling off the perovskite layer.
[0056] In some embodiments, the material of the fiberglass film layer 20 includes an elastic material and a fiberglass material, wherein the fiberglass material includes shredded fiberglass or fiberglass cloth.
[0057] The elastic material can be TPO (Thermoplastic polyolefin), which is composed of two components: rubber and polyolefin. The elastic material and glass fiber material can be mixed into a single film, or the elastic material and glass fiber material can be formed into separate films and then stacked together.
[0058] In some embodiments, the diameter of the shredded glass fiber ranges from 10 μm to 20 μm, the length ranges from 3 mm to 6 mm, and the diameter of the glass fiber cloth ranges from 12 μm to 23 μm.
[0059] The diameter of the glass fiber fragments comes from the breaking down of the glass fibers, and its diameter is usually similar to that of the original glass fibers. Its diameter can be 10μm, 15μm, or 20μm, etc. As for the length, because the glass fiber fragments are broken down, their length is significantly shorter than the original long fibers; the specific length depends on the breaking process and degree. The length of the glass fiber fragments can be 3mm, 4mm, or 6mm, etc., providing better distribution and mixing uniformity.
[0060] The diameter of fiberglass cloth refers to the diameter of the single filaments that make up the fiberglass cloth, which can be 12μm, 15μm, or 23μm, etc. Within the diameter range of 12μm to 23μm, it has an excellent strength-to-weight ratio, as well as good insulation and corrosion resistance.
[0061] The following presents three structures for the glass fiber adhesive film layer 20:
[0062] Reference Figure 2Structure 1 of the fiberglass adhesive film layer 20: The fiberglass adhesive film layer 20 includes a first thermoplastic polyolefin elastic layer 21 and a shredded fiberglass layer 26. The first thermoplastic polyolefin elastic layer 21 is disposed on one side of the substrate 10; the shredded fiberglass layer 26 is disposed on the side of the first thermoplastic polyolefin elastic layer 21 away from the substrate 10; wherein, the monojunction perovskite functional layer 40 is disposed on the side of the shredded fiberglass layer 26 away from the first thermoplastic polyolefin elastic layer 21.
[0063] Reference Figure 3 Structure 2 of the fiberglass adhesive film layer 20: The fiberglass adhesive film layer 20 includes a second thermoplastic polyolefin elastic layer 22, a third thermoplastic polyolefin elastic layer 23, and a mixed layer 27. The second thermoplastic polyolefin elastic layer 22 is disposed on one side of the substrate 10; the mixed layer 27 is disposed on the side of the second thermoplastic polyolefin elastic layer 22 away from the substrate 10, and the mixed layer 27 is mixed with thermoplastic polyolefin and shredded fiberglass; the third thermoplastic polyolefin elastic layer 23 is disposed on the side of the mixed layer 27 away from the second thermoplastic polyolefin elastic layer 22; wherein, the monojunction perovskite functional layer 40 is disposed on the side of the third thermoplastic polyolefin elastic layer 23 away from the mixed layer 27.
[0064] Reference Figure 4 The structure 3 of the fiberglass adhesive film layer 20 includes a fourth thermoplastic polyolefin elastic layer 24, a fifth thermoplastic polyolefin elastic layer 25, and a fiberglass cloth layer 28. The fourth thermoplastic polyolefin elastic layer 24 is disposed on one side of the substrate 10; the fiberglass cloth layer 28 is disposed on the side of the fourth thermoplastic polyolefin elastic layer 24 away from the substrate 10; the fifth thermoplastic polyolefin elastic layer 25 is disposed on the side of the fiberglass cloth layer 28 away from the fourth thermoplastic polyolefin elastic layer 24; wherein, the monojunction perovskite functional layer 40 is disposed on the side of the fifth thermoplastic polyolefin elastic layer 25 away from the fiberglass cloth layer 28.
[0065] Using conventional thermoplastic encapsulation films as a comparative example, the comparison between the three structures and the conventional structure is shown in the table below:
[0066] Table 1 Performance of different embodiments and comparative examples
[0067] project Structure 1 Structure 2 Structure 3 Comparative Example DH-1000h power attenuation (%) 1.8 1.4 0.9 2.3 <![CDATA[UV-30kW / h / m^ 2 Power attenuation (%) 2.6 1.7 1.2 2.1 TC-200 power attenuation (%) 1.5 1.2 0.8 1.9 HF-30 power attenuation 1.3 0.9 0.7 1.5
[0068] As can be seen from the table, the glass fiber encapsulation layer 20 exhibits lower power attenuation compared to conventional thermoplastic encapsulation films. Structure 3 shows the lowest power attenuation. Therefore, replacing the conventional thermoplastic encapsulation film with the glass fiber encapsulation layer 20 can effectively improve the strength of single-junction perovskite solar cell modules.
[0069] In some embodiments, the glass fiber material is colored glass fiber.
[0070] In this embodiment, by using colored glass fiber, the glass fiber film layer 20 can have a corresponding color, such as red, green or blue, thereby meeting the application requirements of the single-junction perovskite solar cell module in different scenarios and improving the aesthetics of the single-junction perovskite solar cell module.
[0071] One embodiment of this application also provides a solar cell system, which includes the single-junction perovskite solar cell module described above. The specific structure and principle of the single-junction perovskite solar cell module can be found in the foregoing embodiments and will not be repeated here.
[0072] According to the solar cell system of this application, the single-junction perovskite solar cell module has higher flatness and dimensional stability after the laminated glass breaks or the glass is tempered, and the perovskite layer is not easy to peel off, which makes the solar cell system more reliable.
[0073] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A single-junction perovskite solar cell module, characterized in that, include: Base; A fiberglass film layer is disposed on one side of the substrate; Water-blocking adhesive is disposed on the side of the substrate near the fiberglass adhesive film layer and arranged around the fiberglass adhesive film layer; A single-junction perovskite functional layer is disposed on the side of the glass fiber adhesive film layer and the water-blocking adhesive away from the substrate.
2. The single-junction perovskite solar cell module according to claim 1, characterized in that, The diameter of the broken glass fibers in the glass fiber film layer ranges from 10μm to 20μm, and the length ranges from 3mm to 6mm, or the diameter of the glass fiber cloth in the glass fiber film layer ranges from 12μm to 23μm.
3. The single-junction perovskite solar cell module according to claim 1, characterized in that, The fiberglass film layer includes: A first thermoplastic polyolefin elastic layer is disposed on one side of the substrate; A layer of broken glass fiber is disposed on the side of the first thermoplastic polyolefin elastic layer away from the substrate; The single-junction perovskite functional layer is located on the side of the broken glass fiber layer away from the first thermoplastic polyolefin elastic layer.
4. The single-junction perovskite solar cell module according to claim 1, characterized in that, The fiberglass film layer includes: A fourth thermoplastic polyolefin elastic layer is disposed on one side of the substrate; A fiberglass cloth layer is disposed on the side of the fourth thermoplastic polyolefin elastic layer away from the substrate; A fifth thermoplastic polyolefin elastic layer is disposed on the side of the fiberglass cloth layer away from the fourth thermoplastic polyolefin elastic layer; The single-junction perovskite functional layer is located on the side of the fifth thermoplastic polyolefin elastic layer away from the fiberglass cloth layer.
5. The single-junction perovskite solar cell module according to claim 1, characterized in that, The fiberglass film layer is made of colored fiberglass.
6. The single-junction perovskite solar cell module according to any one of claims 1-5, characterized in that, The single-junction perovskite solar cell module also includes: A junction box is located on the side of the single-junction perovskite functional layer away from the glass fiber film layer, and the junction box is electrically connected to the single-junction perovskite functional layer.
7. The single-junction perovskite solar cell module according to any one of claims 1-5, characterized in that, The substrate is made of glass.
8. A solar cell system, characterized in that, The solar cell system includes a single-junction perovskite cell module according to any one of claims 1-7.