Air blowing device and preparation method of perovskite solar cell

Abstract

The invention discloses an air blowing device used for preparation of a perovskite solar cell. The air blowing device mainly comprises an air compressor, an air pressure control valve, an air blowing electronic control switch and a nozzle. The invention also discloses a preparation method of the perovskite solar cell. The method comprises the following steps that a conductive substrate is manufactured, and an electron transmission layer is deposited on the conductive layer of the conductive substrate; the air blowing device is provided, perovskite active layer precursor solution is absorbed to be uniformly coated on the surface of the electron transmission layer of the conductive substrate, the conductive substrate is driven to rotate by starting spin coater and air is also blown to the conductive substrate; heat preservation is performed on the conductive substrate after air blowing for 10min and then the conductive substrate is cooled to the room temperature; and a hole transmission layer and a metal counter electrode are prepared on the surface of the perovskite active layer of the conductive substrate in turn. The beneficial effects of the air blowing device and the preparation method of the perovskite solar cell are that the perovskite active layer is prepared by using an air blowing method, and the dry compressed air flows through the surface of the solution so that the perovskite solution is enabled to uniformly form a film; and the compressed air is easy to acquire and nontoxic and harmless so as to be safe and reliable.

Description

technical field [0001] The invention relates to a preparation process and method of a perovskite solar cell, in particular to an air blowing device and a preparation method of a perovskite solar cell. Background technique [0002] In recent years, the research on perovskite solar cells has become a hot spot in the research field. As an important component of perovskite solar cells, the preparation method of the perovskite active layer is a key technical point. In addition to the solution ratio, the film formation process is also a major link that affects the performance of the battery. [0003] The anti-solvent method and the cooling method are two commonly used technical methods for preparing perovskite active layers in the perovskite field. However, both technical methods have their obvious defects: for example, the solvent used in the anti-solvent method is generally chlorine. Toxic and harmful reagents such as benzene have the following disadvantages: 1. The reagent its...

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Problems solved by technology

[0003] Anti-solvent method and cooling method are two commonly used technical means for preparing perovskite active layer in the perovskite field. However, both technical means have their obvious defects: for example, the solvent used in the anti-solvent method is generally chlorine Toxic and harmful reagents such as benzene have the following disadvantages: 1. The reagent itself has strong toxicity, causing direct and potential harm to the operator and other experimenters around; 2. Some reagents are extremely volatile and serious 3. The anti-solvent method requires a large amount of solvents, resulting in a huge amount of waste liquid recovery, resulting in a large amount of waste and potential environmental threats

The operation of the cooling method is to heat the glass substrate and the solution at the same time, then place the substrate on the spin coater, drip the heating solution, and then spin coat. However, there are too many uncontrollable factors in this process, such as the proficiency of the operator. , the temperature of the surrounding environment, air circulation, etc., the temperature of the solution and the substrate is difficult to achieve the same every time during spin coating, the repeatability is too poor, and the performance of batteries prepared in different batches is difficult to achieve exactly the same

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