Perovskite solar cell encapsulation method with capillary adhesive sealing

Abstract

This invention discloses a method for encapsulating perovskite solar cells with capillary adhesive sealing. It uses a UV-curable adhesive instead of conventional encapsulating adhesive for encapsulating the perovskite solar cells. Through this method, the power generation area of ​​the perovskite solar cells can be increased, and the photoelectric conversion efficiency can be improved. Furthermore, the UV-curable adhesive does not generate thermal stress, which can increase the lifespan of the perovskite solar cells.

Claims

1. A method for encapsulating a perovskite solar cell with capillary adhesive sealing, comprising the following steps: (A) preparing a substrate and fabricating a perovskite solar cell structure on the substrate; (B) placing an encapsulation film on the perovskite solar cell structure; (C) placing an encapsulation substrate on the encapsulation film; (D) applying pressure to the encapsulation substrate, such that the edge of the encapsulation film is spaced apart from the edge of the substrate and the edge of the encapsulation substrate; (E) applying a UV-curable adhesive to the edge of the substrate and the gap between the edge of the substrate and the encapsulation substrate, wherein the UV-curable adhesive fills the gap by capillary action; and (F) irradiating the UV-curable adhesive with UV light to cure the UV-curable adhesive.

2. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the substrate is a flexible substrate or a rigid substrate.

3. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the perovskite solar cell structure comprises: a first electrode layer; a first transport layer disposed on the first electrode layer; a photoelectric conversion layer disposed on the first transport layer; a second transport layer disposed on the photoelectric conversion layer; and a second electrode layer disposed on the second transport layer.

4. The encapsulation method for a perovskite solar cell with capillary adhesive sealing as described in claim 1, wherein the encapsulation film is made of thermoplastic polyolefin.

5. The encapsulation method for a perovskite solar cell with capillary adhesive sealing as described in claim 1, wherein the thickness of the encapsulation film is between 0.4 mm and 0.6 mm.

6. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the encapsulation substrate is a flexible encapsulation substrate or a rigid encapsulation substrate.

7. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the spacing is between 1 mm and 7 mm.

8. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the spacing is preferably between 1 mm and 5 mm.

9. The perovskite solar cell encapsulation method with capillary adhesive sealing as described in claim 1, wherein the spacing is preferably between 1 mm and 2 mm.

10. The method for encapsulating a perovskite solar cell with capillary adhesive sealing as described in claim 1, wherein the viscosity of the UV-curable adhesive is between 0 and 50,000 centipoise.

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