All-printing mesoscopic perovskite solar cell based on amide additives and preparation method of all-printing mesoscopic perovskite solar cell

By introducing amide additives into the perovskite precursor solution and using a full printing process, the high cost and stability issues of perovskite solar cells have been solved, achieving high photoelectric conversion efficiency and stability, making them suitable for flexible and lightweight applications.

CN121751872APending Publication Date: 2026-03-27GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing perovskite solar cells suffer from high cost and poor stability, especially due to the high cost and instability of organic hole transport materials, which limits their large-scale application.

Method used

High-quality perovskite crystal materials were prepared by mixing amide additives with lead iodide and formamidinium iodine solutions in a perovskite precursor solution. A porous layer structure, including a substrate, cathode layer, oxide dense layer, porous electron transport layer, porous insulating layer and porous anode layer, was constructed by a fully printed process to form a fully printed mesoscopic perovskite solar cell.

Benefits of technology

This improved the quality and hydrophobicity of the perovskite film, inhibited water molecule intrusion, slowed down the crystallization rate, and resulted in a denser perovskite film with fewer pinholes, significantly improving the photoelectric conversion efficiency.

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Abstract

The invention relates to the technical field of solar cells, in particular to a full-printing mesoscopic perovskite solar cell based on amide additives and a preparation method of the full-printing mesoscopic perovskite solar cell. The invention discloses a full-printing mesoscopic perovskite solar cell based on amide additives. The full-printing mesoscopic perovskite solar cell is composed of a substrate, a cathode layer, an oxide compact layer, a porous electron transport layer, a porous insulating layer, a porous anode layer and perovskite crystal materials, wherein the porous layers are filled with the perovskite crystal materials; according to the invention, the pesticide is introduced into the perovskite precursor solution as an additive, so that the defects of the perovskite film are passivated, the quality and hydrophobicity of the perovskite film are improved, and water molecules can be effectively prevented from invading into perovskite crystal grains, so that the perovskite decomposition reaction induced by the water molecules is physically inhibited, and the performance of the perovskite film is improved. Meanwhile, as a nucleation site, the crystal rate is delayed, a more compact perovskite thin film with fewer holes is obtained, and the photoelectric conversion efficiency of the full-printing perovskite solar cell is remarkably improved.
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