Packaging structure of perovskite solar cell

Abstract

The utility model discloses a packaging structure of a perovskite solar cell, which relates to the photovoltaic field and comprises a cover plate, an elastic sealing film, a perovskite solar cell, a substrate and a shell, and the cover plate, the elastic sealing film, the perovskite solar cell and the substrate are sequentially stacked from top to bottom to form a primary packaging structure. And the primary packaging structure is packaged in the shell. The perovskite solar cell has the advantages that water and oxygen in the environment can be effectively prevented from diffusing into the cell by utilizing the barrier performance of the elastic sealing film on water and oxygen and further protection of the shell, and the stability of the perovskite solar cell is improved.

Description

Technical Field

[0001] The utility model relates to the photovoltaic field, in particular to a packaging structure of a perovskite solar cell. Background Art

[0002] As a representative of the third generation of new thin-film solar cells, perovskite cells have become a highly sought-after solar technology due to their high photoelectric conversion efficiency, simple fabrication process, and low cost. In just over a decade, the light energy conversion efficiency of perovskite solar cells has surpassed that of traditional silicon-based solar cells, a rate of improvement far exceeding that of silicon-based solar cells. However, despite the rapid improvement in photoelectric conversion efficiency in recent years, perovskite thin films are highly sensitive to moisture (water) and oxygen. When exposed to moisture, they undergo chemical reactions that can cause permanent failure of the solar cell. Current perovskite solar cell structures struggle to effectively prevent moisture (humidity) penetration, a key factor affecting the stability of perovskite solar cells. Currently, encapsulation is undoubtedly the simplest and most effective method for improving the stability of perovskite solar cells. Encapsulation of perovskite solar cells typically involves coating the cell surface with one or more layers of protective material to isolate the interior of the perovskite solar cell from the external environment, preventing the intrusion of water, oxygen, and other environmental factors, thereby improving the cell's stability and lifespan. However, current perovskite solar cell encapsulation methods are generally ineffective in blocking moisture. Utility Model Content

[0003] The technical problem to be solved by the present invention is how to effectively prevent water and oxygen in the environment from diffusing into the interior of the battery.

[0004] The utility model solves the above-mentioned technical problems through the following technical means: a packaging structure of a perovskite solar cell, comprising a cover plate, an elastic sealing film, a perovskite solar cell, a substrate and an outer shell, wherein the cover plate, the elastic sealing film, the perovskite solar cell and the substrate are stacked in sequence from top to bottom to form a preliminary packaging structure, and the preliminary packaging structure is packaged inside the outer shell.

[0005] As an optimized technical solution, the cover plate, the elastic sealing film, the perovskite solar cell and the edges of the substrate are bonded together by packaging adhesive.

[0006] As an optimized technical solution, the packaging glue adopts ultraviolet epoxy resin glue.

[0007] As an optimized technical solution, the preliminary packaging structure is encapsulated inside the shell by organic silicone.

[0008] As an optimized technical solution, the elastic sealing film adopts a polyolefin elastomer film.

[0009] As an optimized technical solution, both the cover plate and the substrate are made of glass plates.

[0010] As an optimized technical solution, the thickness of the elastic sealing film is 0.25 to 0.35 mm.

[0011] As an optimized technical solution, the thickness of the perovskite solar cell is 650 to 750 nm.

[0012] As an optimized technical solution, the thickness of the cover plate is 2 to 3 mm, the thickness of the substrate is 2.5 to 3 mm, the thickness of the outer shell is 2.5 to 3.5 mm, the thickness of the structure consisting of the cover plate, elastic sealing film, perovskite solar cell and substrate is 4.5 to 5.5 mm, and the thickness of the packaging structure of the perovskite solar cell is 7.5 to 8.5 mm.

[0013] The advantages of the present invention are:

[0014] 1. The elastic sealing film’s barrier properties for water and oxygen, as well as the further protection of the outer shell, can effectively prevent water and oxygen in the environment from diffusing into the battery, thereby improving the stability of the perovskite solar cell.

[0015] 2. The packaging purpose can be achieved by only using lamination and packaging glue, which is relatively low in cost, has commercial potential, and has a wide range of applications.

[0016] 3. The polyolefin elastomer film, organic silica gel and UV epoxy resin glue used are all back contact electrode materials commonly used in the preparation of perovskite solar cells. They will not react with battery components, thereby improving the stability of the packaging structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the packaging structure of the perovskite solar cell according to an embodiment of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the cover plate, elastic sealing film, perovskite solar cell and substrate of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] like Figure 1 、 Figure 2 As shown, an embodiment of the present utility model discloses a packaging structure of a perovskite solar cell, including a cover plate 1, an elastic sealing film 2, a perovskite solar cell 3, a substrate 4 and a shell 5.

[0021] The cover plate 1, the elastic sealing film 2, the perovskite solar cell 3 and the substrate 4 are stacked in sequence from top to bottom to form a preliminary packaging structure, which is encapsulated inside the shell 5 by organic silica gel. The edges of the cover plate 1, the elastic sealing film 2, the perovskite solar cell 3 and the substrate 4 are bonded by packaging glue, and the packaging glue adopts ultraviolet epoxy resin glue; the elastic sealing film 2 adopts a polyolefin elastomer film (POE film), and the thickness of the elastic sealing film 2 is 0.25-0.35mm; the thickness of the perovskite solar cell 3 is 650-750nm; the cover plate 1 and the substrate 4 are both glass plates, the thickness of the cover plate 1 is 2-3mm, and the thickness of the substrate 4 is 2.5-3mm; the thickness of the shell 5 is 2.5-3.5mm; the thickness of the preliminary packaging structure composed of the cover plate 1, the elastic sealing film 2, the perovskite solar cell 3 and the substrate 4 is 4.5-5.5mm, and the thickness of the packaging structure of the perovskite solar cell after complete encapsulation is 7.5-8.5mm.

[0022] The packaging method of the perovskite solar cell packaging structure is as follows: placing a cover plate 1, an elastic sealing film 2, a perovskite solar cell 3 and a substrate 4 in a laminator, setting the lamination program parameters, setting the temperature to 90°C, the number of laminations to 3, the pressure difference of each lamination to 10 standard atmospheres, the maximum pressure to 30 standard atmospheres, setting the lamination time to 8 minutes, and vacuuming for 10 minutes, for a total of 34 minutes; after the parameters are set, the cover plate 1, the elastic sealing film 2, the perovskite solar cell 3 and the substrate 4 are preliminarily packaged; then, ultraviolet epoxy resin glue is used to bond the edges of the cover plate 1, the elastic sealing film 2, the perovskite solar cell 3 and the substrate 4 to achieve further packaging; finally, organic silica gel is used to package the previous packaging structure in a shell 5 to obtain the final perovskite solar cell packaging structure; this structure can effectively prevent water and oxygen in the environment from diffusing into the interior of the battery, thereby improving the stability of the perovskite solar cell.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A packaging structure for a perovskite solar cell, characterized in that: It includes a cover plate, an elastic sealing film, a perovskite solar cell, a substrate and an outer shell. The cover plate, the elastic sealing film, the perovskite solar cell and the substrate are stacked in sequence from top to bottom to form a preliminary packaging structure, and the preliminary packaging structure is packaged inside the outer shell.

2. The packaging structure of a perovskite solar cell according to claim 1, wherein: The cover plate, the elastic sealing film, the perovskite solar cell and the edges of the substrate are bonded together by packaging adhesive.

3. The packaging structure of a perovskite solar cell according to claim 2, wherein: The packaging glue is ultraviolet epoxy resin glue.

4. The packaging structure of a perovskite solar cell according to claim 1, wherein: An elastic packaging layer is provided on the inner side of the shell.

5. The packaging structure of a perovskite solar cell according to claim 4, wherein: The elastic packaging layer is made of organic silicone material.

6. The packaging structure of a perovskite solar cell according to claim 1, wherein: The elastic sealing film is a polyolefin elastomer film.

7. The packaging structure of a perovskite solar cell according to claim 1, wherein: The cover plate and the substrate are both made of glass plates.

8. The packaging structure of a perovskite solar cell according to claim 1, wherein: The thickness of the elastic sealing film is 0.25-0.35 mm.

9. The packaging structure of a perovskite solar cell according to claim 8, wherein: The thickness of the perovskite solar cell is 650-750 nm.

10. The packaging structure of a perovskite solar cell according to claim 9, wherein: The thickness of the cover plate is 2 to 3 mm, the thickness of the substrate is 2.5 to 3 mm, the thickness of the outer shell is 2.5 to 3.5 mm, the thickness of the structure consisting of the cover plate, elastic sealing film, perovskite solar cell and substrate is 4.5 to 5.5 mm, and the thickness of the packaging structure of the perovskite solar cell is 7.5 to 8.5 mm.

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