Preparation method of perovskite solar cell light absorption layer material methylamine lead dibromide

A technology of methylamine lead bromide and solar cells, which is applied in the manufacture of circuits, electrical components, and final products, can solve the problem that it is difficult to obtain perovskite absorbing layers, and that perovskite cells cannot be commercially produced on a large scale. Problems such as high cost price, achieve the effects of shortening the holding time, good stability and light absorption performance, and simple system operation

Inactive Publication Date: 2015-09-23
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing perovskite materials mainly include solution method and co-evaporation method, but it is difficult to obtain a perovskite absorbing layer with high crystallinity by a single solution method, although co-evaporation method can obtain perovskite absorbing layer with high crystallinity layer, but the preparation cost is high, the above problems have caused the perovskite battery to be unable to be commercially produced on a large scale

Method used

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  • Preparation method of perovskite solar cell light absorption layer material methylamine lead dibromide

Examples

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Embodiment 1

[0025] (1) Clean the substrate

[0026] Use FTO conductive glass with a thickness of 3mm as the substrate, first ultrasonically clean it in acetone for 10 minutes, then clean it in absolute ethanol for 10 minutes, finally rinse it with deionized water, and dry it;

[0027] (2) Preparation of reaction solution

[0028] Get 0.01mol of solid methyl ammonium bromide (CH 3 NH 3 Br) and 0.02mol solid lead bromide (PbBr 2 ), add 20mL of N,N-dimethylformamide (DMF) solution, and stir until the solid powder is completely dissolved to obtain a reaction solution;

[0029] (3) Pulse electromagnetic field treatment

[0030] Pour the reaction solution prepared in step (2) into a beaker, and apply a pulse voltage of 500v to the reaction solution, and a pulse electromagnetic field treatment with an electric pulse frequency of 3Hz for 3min;

[0031] (4) Spin coating film formation

[0032] Add the pulse-treated reaction solution dropwise on the conductive glass substrate, and perform low...

Embodiment 2

[0036] (1) Clean the substrate

[0037] Use FTO conductive glass with a thickness of 4mm as the substrate, first ultrasonically clean it in acetone for 15 minutes, then clean it in absolute ethanol for 15 minutes, and finally rinse it with deionized water and dry it;

[0038] (2) Preparation of reaction solution

[0039] Get 0.01mol of solid methyl ammonium bromide (CH 3 NH 3 Br) and 0.01mol of solid lead bromide (PbBr 2 ), add 15mL of N,N-dimethylformamide (DMF) solution, and stir until the solid powder is completely dissolved to obtain a reaction solution;

[0040] (3) Pulse electromagnetic field treatment

[0041] Pour the reaction solution prepared in step (2) into a beaker, and apply a pulse voltage of 600v to the reaction solution, and a pulse electromagnetic field with an electric pulse frequency of 4Hz for 150s;

[0042] (4) Spin coating film formation

[0043] Add the pulse-treated reaction solution dropwise on the conductive glass substrate, and perform low-spe...

Embodiment 3

[0047] (1) Clean the substrate

[0048] Use FTO conductive glass with a thickness of 5mm as the substrate, first ultrasonically clean it in acetone for 20 minutes, then clean it in absolute ethanol for 20 minutes, and finally rinse it with deionized water and dry it;

[0049] (2) Preparation of reaction solution

[0050] Get 0.02mol of solid methyl ammonium bromide (CH 3 NH 3 Br) and 0.01mol of solid lead bromide (PbBr 2 ), add 20mL of N,N-dimethylformamide (DMF) solution, and stir until the solid powder is completely dissolved to obtain a reaction solution;

[0051] (3) Pulse electromagnetic field treatment

[0052] Pour the reaction solution prepared in step (2) into a beaker, and apply a pulse voltage of 700v to the reaction solution, and a pulse electromagnetic field treatment with an electric pulse frequency of 5Hz for 2min;

[0053] (4) Spin coating film formation

[0054] Add the pulse-treated reaction solution dropwise on the conductive glass substrate, and perfo...

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Abstract

The invention relates to a preparation method of a perovskite solar cell light absorption layer material methylamine lead dibromide. The preparation method comprises the following steps: mixing solid methyl ammonium bromide and solid lead dibromide, adding the mixture into a N,N-dimethyl formamide solvent, stirring uniformly to obtain a reaction solution, pouring the reaction solution in a container, applying a pulse electromagnetic field to treat the reaction solution, dropwise adding the treated reaction solution on a clean conducting glass substrate, performing low-speed spin coating and high-speed spin coating respectively to form a perovskite film with the thickness of 500-800 nm, then putting the perovskite film in a vacuum drying oven, and performing annealing treatment to obtain a methylamine lead dibromide film. The preparation method has the advantages that the preparation technology is simple, the preparation cost is low, the degree of crystallinity of the product can be improved by adopting the treatment of the pulse electromagnetic field, and the heat preservation time of annealing treatment is greatly shortened and is only 1/6 of that when the treatment of the pulse electromagnetic field is unadopted, so that the production cycle of the product is shortened, the energy resources are saved, and the preparation method is beneficial for industrial production.

Description

technical field [0001] The invention belongs to the field of solar cell material preparation, and relates to a method for preparing high-crystallinity perovskite solar cell absorbing layer material methylamine lead bromide, in particular to a method for preparing high-crystallinity perovskite by using a pulsed electromagnetic field auxiliary solution method Method for mining solar cell absorbing layer material methylamine lead bromide. Background technique [0002] With the depletion of energy and the deterioration of the environment, people urgently need to find a new type of clean energy that can replace traditional fossil energy. Solar energy has the advantages of sustainability and pollution-free, and is an important part of the sustainable development energy strategy of countries around the world. Solar cells are The main means of utilizing solar energy at present. At present, solar cells are mostly second-generation monocrystalline silicon or polycrystalline silicon s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0256
CPCH01L31/0256H01L31/18Y02P70/50
Inventor 唐立丹梅海林王冰彭淑静齐锦刚王建中
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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