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Device and method for preparing perovskite film through hot air flow blade coating

A technology of perovskite and hot air flow, which is applied in the direction of surface coating liquid devices, coatings, electrical components, etc., can solve the problem of mother liquor pollution substrate requirements, and achieve the effect of quality assurance

Inactive Publication Date: 2020-10-30
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention mainly solves the problems of heterogeneous crystallization (substances with different solubility separate out to form miscellaneous items during the slow precipitation process), the pollution of mother liquor and the high requirements for the substrate, which are difficult to solve in the current perovskite material thin film preparation technology. Preparation process, expanding the film-making area, providing methods and technical support for the industrial preparation of large-area pure-phase perovskite films

Method used

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  • Device and method for preparing perovskite film through hot air flow blade coating
  • Device and method for preparing perovskite film through hot air flow blade coating
  • Device and method for preparing perovskite film through hot air flow blade coating

Examples

Experimental program
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Effect test

Embodiment 1

[0048] This embodiment is to utilize the hot gas flow coating method to prepare the CH of perovskite 3 NH 3 PbBr 3 film, comprising the steps of:

[0049] S1. First, place the clean substrate 2 treated with ultraviolet and ozone on the workbench 1 and fix it, then add 2mol / L mother liquor to the edge of the substrate 2 dropwise, and the dropping amount is 0.005ml / cm 2 ; Described mother liquor is DMF solvent, and raw material is the CH that molar ratio is 1:1 3 NH 3 Br and PbBr 2 ; The length of the base 2 is 2cm, and the width is 2cm;

[0050] S2. Adjust the angle between the axial and vertical directions of the spray gun 4 to be 85° and align it with the liquid droplets. The air outlet width of the used heat gun is 10mm, and the height is 1mm; the distance from the air outlet to the liquid droplets is 1cm, and the wind speed of the air gun The adjustment range is 50L / min, and the hot air temperature is 50°C;

[0051] S3. Move the support frame 3 at a moving speed of 1...

Embodiment 2

[0053] The present embodiment utilizes hot gas flow coating method to prepare perovskite (C 4 h 9 NH 3 ) 2 (CH 3 NH 3 )Pb 2 I 7 film, comprising the steps of:

[0054] S1. First, place the clean substrate 2 treated with ultraviolet and ozone on the workbench 1 and fix it, then add 1mol / L mother liquor to the edge of the substrate 2 dropwise, and the dropping amount is 0.01ml / cm 2 ; Described mother liquor is the DMF and the DMSO solvent that volume ratio is 1:1, and raw material is the C that molar ratio is 2:1:2 4 h 9 NH 3 I, CH 3 NH 3 I and PbI 2 ; The length of the base 2 is 2cm, and the width is 2cm;

[0055] S2, adjust the angle between the axial and vertical directions of the spray gun 4 to be 60° and align the liquid droplets. The air outlet width of the used heat gun is 30mm, and the height of the spray gun 4 is 2mm; the distance from the air outlet to the droplets is 2cm, and the air outlet The gun wind speed adjustment range is 500L / min, and the hot air...

Embodiment 3

[0058] This embodiment is to utilize the hot gas flow coating method to prepare the CsPbBr of perovskite 3 film, comprising the steps of:

[0059] S1. First place the clean substrate 2 treated with ultraviolet and ozone on the workbench 1 and fix it, and then add 0.1mol / L mother liquor to the edge of the substrate 2 dropwise, and the dropping amount is 1ml / cm 2 ; Described mother liquor is DMSO solvent, and raw material is CsBr and PbBr that molar ratio is 1:1 2 ; The length of the base 2 is 10cm, and the width is also 10cm;

[0060] S2, adjust the angle between the axial and vertical direction of the spray gun 4 to be 0° and align the liquid droplet. The width of the air outlet of the flat heat gun used is 100mm, and the height of the spray gun 4 is 10mm; the distance from the air outlet to the droplet is 10cm, and the air outlet The gun wind speed adjustment range is 1000L / min, and the hot air temperature is 250°C;

[0061] S3. Move the support frame 3 at a moving speed o...

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Abstract

The invention belongs to the field of film preparation, and particularly belongs to a device and method for preparing a perovskite film through hot air flow blade coating. The device comprises a long-strip-shaped workbench, wherein a substrate used for preparing the film is arranged at the top of the workbench, and mother liquor used for preparing the film is arranged on the upper end face of thesubstrate; a supporting frame is arranged at one end of the top end of the workbench in the length direction, a spray gun capable of blowing hot air is connected to the supporting frame, and an air outlet of the spray gun downwards faces the mother liquor on the substrate at a certain angle; the spray gun and the substrate can move relatively at a constant speed in the length direction of the workbench; and the air outlet is in a linear opening shape, and the width of the linear opening needs to enable the blowing width of the hot air on the substrate to be larger than or equal to the width ofthe film. According to the device and method, the problems of out-phase crystallization, pollution to the mother liquor and high requirements for the substrate which are difficult to solve in the current perovskite material film preparation technology are mainly solved, meanwhile, the preparation process is simplified, the film preparation area is enlarged, and a method and technical support areprovided for industrial preparation of the pure-phase large-area perovskite film.

Description

technical field [0001] The invention belongs to the field of thin film preparation, in particular to a device and method for preparing a perovskite thin film by hot air scraping coating. Background technique [0002] Perovskite materials have been widely studied since they were discovered to show great advantages in the field of solar cells. At present, the efficiency of a single solar cell based on perovskite materials has exceeded 25%, which is extremely potential to replace silicon and become a new generation of solar energy. The current commercialization process of battery materials is in full swing. The perovskite layer is the core part of improving the efficiency of perovskite solar cells, and the problems of large area and simplified preparation are important problems to be solved in promoting its commercialization. Most of the current research is based on the spin coating method to prepare perovskite material thin films, and it is impossible to obtain effective larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C9/14B05C5/02B05C11/06B05C13/02B05D3/04H01L51/00H01L51/48H10K99/00
CPCB05C9/14B05C5/02B05C11/06B05C13/02B05D3/0413H10K71/12H10K71/40Y02P70/50
Inventor 殷建张超魏俊峰申绪男冯洋杨明赖运子杨立闫礼
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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