Perovskite passivation material, passivation unit and perovskite battery

Through spin coating and annealing cross-linking technology of vinylthiophene compounds, the problem of uncoordinated ions on the surface of perovskite solar cells is solved, and the stability and electrochemical performance are improved, which is suitable for commercial applications.

CN119277948APending Publication Date: 2025-01-07TRINA SOLAR CO LTD
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Patent Information

Application Number
CN202411356881.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-01-07

AI Technical Summary

Technical Problem

The stability problems of perovskite solar cells are mainly due to the fact that the bare ions on the uncoordinated surface of perovskite are prone to polarization reactions during preparation and use, resulting in interface defects and layer degradation. The existing passivation method is expensive or affects charge extraction. and transport, and fail to effectively solve the passivation problem of uncoordinated ions.

Method used

Vinylthiophene compounds are used as passivation materials, and uniform films are formed through spin coating technology, and cross-linking reactions are carried out during the annealing process to form a stable network structure, enhance the binding force with the perovskite layer, and achieve effective passivation.

Benefits of technology

The stability and long-term effectiveness of the passivation layer are achieved, the electrochemical performance of perovskite batteries is improved, the photoelectric conversion efficiency and stability is significantly improved, the manufacturing cost is reduced, and it is suitable for commercial promotion.

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Abstract

The invention belongs to the technical field of perovskite solar cell interface modification, and particularly provides a perovskite passivation material, a passivation unit and a perovskite cell. The perovskite passivation material provided by the invention comprises a vinyl thiophene compound. According to the invention, the perovskite layer is passivated and modified through the vinyl thiophene compound, and the passivation layer has a good passivation effect and effectively passivates defects in the perovskite layer; and high stability is achieved, the long-term effectiveness of the passivation layer is guaranteed, and the passivation effect can be stably kept for a long time. The passivation layer can greatly improve the photoelectric conversion efficiency of the device, and provides powerful support for the development of the fields of perovskite solar cells and the like.
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