Large-area perovskite solar cell packaging method

Abstract

The invention discloses a method for packaging a large-area perovskite solar cell. The method comprises steps of preparing an insulating layer on a back electrode of the perovskite solar cell in a mode of magnetron sputtering or ALD or vacuum coating, enabling one part of the insulating layer to be deposited on the surface of a perovskite film layer through the pores of a carbon electrode of the cell, and enabling the other part of the insulating layer to be directly deposited on the surface of carbon; forming a primary package; forming an isolating layer on the insulating layer by adopting any one or any combination of polyimide, polytetrafluoroethylene and glass fiber, and sequentially paving a resin film and a packaging back plate on the isolating layer; melting the resin film through vacuumizing, pressurizing and heating equipment, adhering the packaging back plate to the conductive substrate, and adhering the insulating layer to the packaging back plate to complete secondary fullpackaging. The method disclosed by the invention can be completed on a large-area cell, and the large-area perovskite solar cell with long service life, high stability and high efficiency can be obtained.

Description

technical field [0001] The invention belongs to the technical field of solar cell packaging, and in particular relates to a large-area perovskite solar cell packaging method and packaging structure. Background technique [0002] As a new type of solar cell, perovskite solar cells have become an international research hotspot due to their high photoelectric conversion efficiency and low cost, as well as the continuous improvement of cell efficiency. A solar cell with industrialization prospect. However, due to the poor stability and short life of this battery, it has become an obstacle to the further development of batteries, and few researchers have conducted in-depth research and experiments on the stability of its packaging, which will slow down the industrialization of perovskite batteries. . [0003] In addition, at this stage, most of them stay in the research of small-area efficiency, while the research on the stability of large-area batteries is negligible. At pre...

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Problems solved by technology

However, due to the poor stability and short life of this battery, it has become an obstacle to the further development of batteries, and few researchers have conducted in-depth research and experiments on the stability of its packaging, which will slow down the industrialization of perovskite batteries.

[0003] In addition, at this stage, most of them stay in the research of small-area efficiency, while the research on the stability of large-area batteries is negligible. At present, there is no mature large-area battery packaging technology. Research shows that the industrialization of perovskite solar cells may replace In addition to achieving low cost, traditional solar cells need to improve battery life and stability. Therefore, it is necessary to solve the stability problem of large-area perovskite solar cells exposed to air for a long time. It is necessary to find a packaging method for large-area cells, so as to promote The industrialization of perovskite solar cells will also become an inevitable trend in the development of perovskite solar cells

[0004] Patent documents 201510974245.9 and 201710342369.4 only mentioned the advantages of large-area solid-state perovskite batteries with lower cost than planar structure batteries, but did not mention the stability of their battery packaging; patent documents 201811469723. Then a cavity will be formed between the glass backplane and the perovskite device, without forming a vacuum or blocking the water and oxygen protective layer, there will be water and oxygen, and with time and light, the water and oxygen will thermally expand, especially in the sun. Water vapor is formed when the temperature rises during power generation, and the perovskite will gradually react with air and moisture, thereby affecting the efficiency and life of the battery, and the packaging glue is sensitive to ultraviolet light and is easy to age; therefore, it is necessary to find a Ways and means capable of solving all or part of the above-mentioned problems

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