Method for preparing perovskite solar cell on micron-sized large suede

Abstract

The invention relates to the technical field of solar cells, in particular to a method for preparing a perovskite solar cell on a micron-sized large suede. The method comprises the following operationsteps: S1, preparing an electrode, a hole or an electron transport layer on a micron-sized suede substrate; S2, preparing a lead iodide / lead chloride film on the hole transport layer; S3, treating the lead iodide-lead chloride film in ligand steam, and cooling to N DEG C on a cooling table to obtain a ligand-lead iodide-lead chloride film; S4, coating the ligand-lead iodide-lead chloride thin film obtained in the step S3 with an organic salt solution, and then annealing in dry and clean air at 150 DEG C; S5, preparing an electron or hole transport layer; S6, preparing an electrode or a grid line electrode; wherein 5 < = N < = 15 DEG C. According to the method for preparing the perovskite solar cell on the micron-sized large suede, the quality of the perovskite thin film is improved, and uniform coverage of the large suede is realized.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method for preparing a perovskite solar cell on a micron-scale large suede surface. Background technique [0002] The small-area laboratory efficiency of perovskite solar cells has increased from 3.8% to 25% in 10 years, which already has a certain commercial value. Perovskite itself has many advantages, such as adjustable band gap and high carrier mobility. In particular, it can form stacked batteries with narrow bandgap batteries, and theoretically predicts that higher efficiency can be achieved. The preparation of thin-film cells on large-scale textured surfaces is an important means to improve the efficiency of thin-film solar cells. However, the current high-efficiency perovskite solar cells are processed by solution methods, such as spin coating, blade coating and coating, and it is difficult to form a well-covered perovskite film on the surface with tex...

AI Technical Summary

Problems solved by technology

However, the current high-efficiency perovskite solar cells are processed by solution methods, such as spin coating, blade coating and coating, and it is difficult to form a well-covered perovskite film on the surface with texture, for example, in the micron On the surface of crystalline silicon with large scale, the complete coverage of perovskite film cannot be achieved by solution method, and the top of the pyramid on the surface of crystalline silicon battery will leak electricity, which brings challenges to the preparation of stacked batteries

Although the vacuum co-evaporation method can solve the problem of suede coverage, the perovskite film prepared by the vacuum co-evaporation method is derived from the direct reaction of inorganic lead salt and organic salt vapor, so the film prepared by it has high defects. Efficiency is still far lower than batteries prepared by solution methods

[0003] In view of the defects in the above-mentioned existing perovskite film preparation methods, the inventors actively research and innovate based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theories, in order to create a The preparation method of perovskite solar cells on micron-scale large suede surface solves the problem of difficult film formation when perovskite cells and silicon cells form laminated cells, reduces the nucleation density, and improves the perovskite thin film quality, making it more practical

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