Large-area pure-iodine wide-band-gap perovskite solar cell and method for preparing large-area pure-iodine wide-band-gap perovskite solar cell in air
The preparation of pure iodine wide bandgap perovskite solar cells in air by the anti-reflection solvent method has solved the problems of excessive crystallization speed and low photoelectric conversion efficiency caused by bromine elements in the prior art, and achieved efficient and stable perovskite thin film deposition and improved solar cell performance.
CN119730662APending Publication Date: 2025-03-28YANGZHOU TECH INNOVATION RES CENT FOR CARBON NEUTRALITY OF YANGZHOU UNIV
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Patent Information
- Application Number
- CN202411811145.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing wide-bandgap perovskite solar cells have too fast crystallization due to the presence or increase of bromine elements, making it difficult to deposit high-quality films, and the photoelectric conversion efficiency is low.
Method used
Pure iodine wide bandgap perovskite solar cells were prepared in air by anti-solvent method. By mixing two precursor solutions, the perovskite film was deposited, which avoided the defects of the anti-solvent method and improved the crystallinity and quality of the film.
Benefits of technology
It realizes efficient perovskite thin film deposition, improves the photoelectric conversion efficiency and light stability of solar cells, and significantly improves the repetition of devices.
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Abstract
The invention provides a large-area pure-iodine broadband gap perovskite solar cell and a preparation method thereof in air, and belongs to the technical field of perovskite. According to the preparation method, a Cs0. 3DMA0. 2MA0. 5PbI3 perovskite light absorption layer or a Cs0. 4DMA0. 2FA0. 2MA0. 2PbI3 perovskite light absorption layer is prepared on a hole transport layer, a precursor solution of each perovskite light absorption layer is obtained by mixing two process solutions, insoluble substances generated after all substances are directly mixed are avoided, the preparation process is realized through an anti-solvent-free process, and the preparation method is simple and easy to implement. The preparation of the large-area high-quality pure-iodine wide-band gap perovskite thin film in the air is facilitated, and the good product rate is excellent. In addition, the pure iodine wide-band gap perovskite solar cell has excellent light stability, and the problem of light-induced phase separation of mixed halogen wide-band gap perovskite can be fundamentally solved.
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