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A method for preparing perovskite solar cells by applying air knife coating

A perovskite-type, composite perovskite technology, applied in the device, coating, circuit and other directions of coating liquid on the surface, can solve the problem of restricting large-area device components, and achieve great application value, convenient operation, and operation. simple effect

Active Publication Date: 2021-07-16
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current common method for preparing carrier transport layers is spin-coating, which limits the assembly of large-area devices.

Method used

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  • A method for preparing perovskite solar cells by applying air knife coating
  • A method for preparing perovskite solar cells by applying air knife coating
  • A method for preparing perovskite solar cells by applying air knife coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: Use the method of the present invention to prepare high-quality perovskite film

[0064] Choose PbI 2 And iodomethylamine is the precursor raw material of perovskite-type materials. It is dissolved in a mixed solvent of DMSO and DMF with a volume ratio of 1:4 at a molar ratio of 1mmol: 1mmol, and is configured to obtain a 45wt% precursor solution. The solution was spread on the substrate to obtain a light yellow transparent liquid film, and then an air knife was used to input a nitrogen pressure of 0.3 MPa to complete the process of uniform coating and drying of the liquid film to obtain a light brown transparent film.

[0065] The obtained perovskite precursor film was placed on a hot stage at 100° C. for 10 minutes and annealed to obtain a black-brown uniform perovskite layer film of the present invention.

[0066] figure 1 A schematic diagram of a simple process flow for preparing high-quality perovskite films using the method of the present invention...

Embodiment 2

[0068] Embodiment 2: Using the method of the present invention to prepare high-quality electron transport material thin films

[0069] Choose SnO 2 As a hole transport material, configure SnO with a mass concentration of 5% 2 Colloidal aqueous solution. The solution is spread on the substrate, and the substrate is a clean commercial transparent conductive substrate ITO to obtain a transparent liquid film, and then an air knife is used to input a nitrogen pressure of 0.4 MPa to complete the process of uniform coating and drying of the liquid film. Subsequently, the substrate was transferred to a hot stage at 150° C. for annealing for 10 minutes to obtain the electron transport material thin film of the present invention.

Embodiment 3

[0070] Embodiment 3: Using the method of the present invention to prepare high-quality hole transport material thin films

[0071] Choose spiro-OMeTAD as the hole transport material, dissolve it in chlorobenzene, and use 4-tert-butylpyridine and lithium bistrifluoromethanesulfonimide as additives to configure holes with a molar concentration of 0.06mol / L Transfer material solution. The solution was spread on the substrate to obtain a light yellow transparent liquid film, and then an air knife was used to input a nitrogen gas pressure of 0.4 MPa to complete the process of uniform coating and drying of the liquid film to obtain a hole transport material film.

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Abstract

The invention discloses a method for preparing perovskite solar cells by applying air knife coating. The method uses air knife coating to prepare high-quality perovskite thin films, electron transport material thin films and hole transport material thin films. Using the high-intensity airflow film formed after the compressed gas enters the air knife, the perovskite precursor solution is uniformly coated, and the solvent components in the solution are quickly taken away, and the uniform explosive nucleation and growth are promoted, thereby preparing good crystallinity. High-quality perovskite films that are uniform, flat, defect-free, and void-free in a wide range. In addition, the method can prepare large-area, uniform, flat, defect-free high-quality electron transport material films and hole transport material films. The preparation method is simple in operation, strong in operability and controllability, and is suitable for the preparation of large-area perovskite thin-film solar cells, so it has great potential application value in the field of solar cells or other scientific fields.

Description

technical field [0001] The invention belongs to the field of thin film preparation technology and solar cell technology, and relates to the preparation of large-area thin films by a solution method and its application in perovskite solar cells, in particular to a method for preparing perovskite solar cells by applying air knife coating, in particular It is a preparation method of applying an air knife to coat a perovskite film, an electron transport material film and a hole transport material film, and use them as a light-absorbing layer, an electron transport layer and a hole transport layer to apply to a perovskite solar cell . Background technique [0002] At present, environmental pollution and the increasing depletion of fossil energy restrict the sustainable development of human society. As an inexhaustible renewable and clean energy, solar energy has received widespread attention worldwide and has become an important breakthrough for human society to solve environmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/42B05C11/06
CPCY02E10/549
Inventor 胡劲松丁捷葛倩庆
Owner INST OF CHEM CHINESE ACAD OF SCI