Preparation method of perovskite precursor solution, perovskite solar cell and preparation method of perovskite solar cell

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By preparing perovskite precursor solutions and applying them in solar cells, the problem of poor stability of perovskite solar cells is solved, and the effect of improving photoelectric performance and efficiency is achieved.

CN119768013AActive Publication Date: 2025-04-04SHENZHEN TECH UNIV

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Patent Information

Application Number: CN202411647599.8
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-11-18
Publication Date: 2025-04-04
Estimated Expiration: 2044-11-18

Application Information

Patent Timeline

18 Nov 2024

Application

CN202411647599.8

04 Apr 2025

Publication

CN119768013A

IPC: H10K85/50; H10K30/40; H10K30/50; H10K71/12; H10K71/00

CPC: Y02E10/549

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Application Domain

Photovoltaic energy generation

Technology Topics

Perovskite solar cell Electrical battery

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AI Technical Summary

Technical Problem

The stability of perovskite solar cells is poor, mainly due to the large number of defects in the perovskite layer, resulting in low efficiency and poor stability.

Method used

By preparing a perovskite precursor solution, multiple substances and their contents are determined using the components of Cs0.05FA0.85MA0.1Pb I3, crystallization aids and diamine hydrobromide salt are added to form a perovskite precursor solution to eliminate defects in the perovskite crystal structure.

Benefits of technology

Effectively eliminate the defects of the perovskite layer and improve the photoelectric performance, efficiency and stability of perovskite solar cells.

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Abstract

The invention discloses a preparation method of a perovskite precursor solution, a perovskite solar cell and a preparation method of the perovskite solar cell, and relates to the technical field of cell preparation. The preparation method of the perovskite precursor solution comprises the following steps: determining a plurality of substances for synthesizing the perovskite material and the content of the substances according to the component Cs0. 05FA0. 85MA0. 1Pb I 3 of the perovskite material, and dissolving the plurality of substances to obtain a first solution; dissolving a crystallization auxiliary agent in the first solution to obtain a second solution; and dissolving diamine hydrobromide in the second solution to obtain a perovskite precursor solution. Through the mode, the perovskite precursor solution for eliminating the defects can be prepared, and the defects of a perovskite layer can be eliminated, so that the efficiency and the stability of the perovskite solar cell are improved.

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