Method for continuously preparing perovskite photovoltaic single crystal thin film composite material

A single crystal thin film and composite material technology, applied in the growth of polycrystalline materials, photovoltaic power generation, single crystal growth, etc.

Active Publication Date: 2021-03-19
山西绿普光电新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the defects of many crystal grains, grain boundaries, pores and vacancies in the preparation of the existing perovskite thin film by low-temperature solution reaction method spin coating, the purpose of the present invention is to provide a method for continuously preparing perovskite photovoltaic single crystal thin film composite material method

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  • Method for continuously preparing perovskite photovoltaic single crystal thin film composite material

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Experimental program
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Effect test

Embodiment 1

[0034] (1). Change CH 3 NH 3 I and PbI 2 Dissolve in the organic solvent dimethylformamide DMF at a molar ratio of 1:1, stir at a low speed of 20 rpm for 3 hours, then let it stand at room temperature for 24 hours, then further raise the temperature to 100°C, and remove the organic solvent dimethylformamide DMF, Placed in a nitrogen atmosphere for 2 days to get CH 3 NH 3 PB 3 Nano microcrystalline grains for use;

[0035] (2). Clean and dry the transparent FTO conductive glass with acetone, then mix titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride at a mass ratio of 85:2:4:0.5, and then mix The mixed solution of titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride is coated on the dried conductive substrate, then heated to 100°C for 10 minutes, and then heated to 350°C to obtain a dense layer; The thickness of the layer is 55 nm;

[0036] (3). The mass ratio of perhydropolysilazane to xy...

Embodiment 2

[0041] (1). Change CH 3 NH 3 I and PbI 2 Dissolve in the organic solvent dimethylformamide DMF at a molar ratio of 1:1, stir at a low speed of 15 rpm for 4 hours, then stand at room temperature for 24 hours and then further raise the temperature to 100°C to exclude the organic solvent dimethylformamide DMF, Placed in a nitrogen atmosphere for 3 days to get CH 3 NH 3 PB 3 Nano microcrystalline grains for use;

[0042] (2). Clean and dry the transparent FTO conductive glass with acetone, then mix titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride at a mass ratio of 90:2:5:0.5, and then mix The mixed solution of titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride is coated on the dried conductive substrate, then heated to 100°C for 10 minutes, and then heated to 350°C to obtain a dense layer; The thickness of the layer is 55 nm;

[0043] (3). Mix perhydropolysilazane and xylene at a mass rat...

Embodiment 3

[0048] (1). Change CH 3 NH 3 I and PbI 2 Dissolve in the organic solvent dimethylformamide DMF at a molar ratio of 1:1, stir at a low speed of 10 rpm for 5 hours, then stand at room temperature for 24 hours and then further raise the temperature to 100°C to exclude the organic solvent dimethylformamide DMF, Placed in a nitrogen atmosphere for 2.5 days to get CH 3 NH 3 PB 3 Nano microcrystalline grains for use;

[0049](2). Clean and dry the transparent FTO conductive glass with acetone, then mix titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride at a mass ratio of 95:4:4:0.8, and then mix The mixed solution of titanium isopropoxide, ethanolamine, ethylene glycol monomethyl ether, and aluminum chloride is coated on the dried conductive substrate, then heated to 100°C for 10 minutes, and then heated to 350°C to obtain a dense layer; The thickness of the layer is 55 nm;

[0050] (3). Use perhydropolysilazane and xylene at a mass ra...

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Abstract

The invention belongs to the technical field of perovskite photovoltaic single crystal thin film composite materials, and particularly relates to a method for continuously preparing a perovskite photovoltaic single crystal thin film composite material. The method comprises the following steps: (1) dissolving CH3NH3I and PbI2 in an organic solvent dimethyl formamide (DMF), performing stirring at alow speed, performing aging at room temperature, further performing heating to remove the organic solvent dimethyl formamide (DMF), and performing standing in a nitrogen atmosphere for more than 2 days to obtain CH3NH3PbI3 nano microcrystal grains for later use; (2) preparing a compact layer; (3) preparing a micro-film layer; and (4) preparing a CH3NH3PbI3 perovskite single crystal thin sheet so as to obtain the perovskite photovoltaic single crystal thin film composite material. According to the invention, the defects of a perovskite layer are reduced, the surface states of crystal grains, crystal boundaries, pores and the like are reduced, and the stability of a perovskite solar cell is improved.

Description

technical field [0001] The invention belongs to the technical field of perovskite photovoltaic single crystal thin film composite materials, in particular to a method for continuously preparing perovskite photovoltaic single crystal thin film composite materials. Background technique [0002] With the rapid growth of the world's energy demand, the increasingly serious environmental problems have become a bottleneck hindering social and economic development, and the establishment of clean and sustainable new energy has become a global consensus. With the rapid development of new energy in recent years, clean and sustainable new energy is the ultimate in energy development. [0003] Solar energy has developed rapidly as an inexhaustible clean energy. Solar cells convert solar energy directly into electricity, which is one of the best ways to use solar energy effectively. The development of solar cell technology has roughly gone through three stages: the first generation of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B7/14C30B29/12H01L51/48
CPCC30B7/14C30B29/12H10K71/10Y02E10/549
Inventor 陈庆曾军堂司文彬李钧
Owner 山西绿普光电新材料科技有限公司
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