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A method for preparing high-efficiency perovskite solar cells by introducing sulfide additives

A technology for the preparation of solar cells and additives, used in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as residual and weak regulation ability, improve optical performance and stability, increase the life of photogenerated carriers, and reduce internal defects. Effect

Active Publication Date: 2021-08-03
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, inorganic acids, metal chloride salts, and organic compound additives have been widely used to improve the performance of perovskite photovoltaic devices, but there are still some problems of residual and weak regulation ability.

Method used

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  • A method for preparing high-efficiency perovskite solar cells by introducing sulfide additives
  • A method for preparing high-efficiency perovskite solar cells by introducing sulfide additives
  • A method for preparing high-efficiency perovskite solar cells by introducing sulfide additives

Examples

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Effect test

example 1

[0027] Example 1: CH without thioacetamide additive 3 NH 3 PB 3 Perovskite solar cells

[0028]First, cut the conductive substrate into small pieces, ultrasonically clean it with deionized water, acetone, isopropanol, and ethanol for 30 minutes, and use nitrogen to blow off the residual liquid on the surface of the substrate. Set the program and use the ultraviolet ozone cleaner to treat for 30 minutes, and place it in a clean petri dish for use. Titanium diisopropoxide bis(acetylacetonate) was dispersed in absolute ethanol at a volume ratio of 1:9 to prepare a titanium dioxide dense layer precursor solution. The obtained precursor solution was spin-coated at 3000rpm for 20s, and heated on a hot plate at 100°C for 3min. The conductive substrate prepared with a dense layer was placed in a high-temperature muffle furnace and annealed at 510°C for 30 minutes, and then cooled to room temperature. Disperse the nano-mesoporous slurry in absolute ethanol at a certain mass ratio, ...

example 2

[0029] Example 2: CH Incorporation of Thioacetamide Additive 3 NH 3 PB 3 Perovskite solar cells

[0030] First, cut the conductive substrate into small pieces, ultrasonically clean it with deionized water, acetone, isopropanol, and ethanol for 30 minutes, and use nitrogen to blow off the residual liquid on the surface of the substrate. Set the program and use the ultraviolet ozone cleaner to treat for 30 minutes, and place it in a clean petri dish for use. Titanium diisopropoxide bis(acetylacetonate) was dispersed in absolute ethanol at a volume ratio of 1:9 to prepare a titanium dioxide dense layer precursor solution. The obtained precursor solution was spin-coated at 3000rpm for 20s, and heated on a hot plate at 100°C for 3min. The conductive substrate prepared with a dense layer was placed in a high-temperature muffle furnace and annealed at 510°C for 30 minutes, and then cooled to room temperature. Disperse the nano-mesoporous slurry in absolute ethanol at a certain ma...

example 3

[0031] Example 3: Cs without introduction of thioacetamide additive 0.06 FA 0.79 MA 0.15 Pb(I 0.85 Br 0.15 ) 3 Perovskite solar cells

[0032] First, cut the conductive substrate into small pieces, ultrasonically clean it with deionized water, acetone, isopropanol, and ethanol for 30 minutes, and use nitrogen to blow off the residual liquid on the surface of the substrate. Set the program and use the ultraviolet ozone cleaner to treat for 30 minutes, and place it in a clean petri dish for use. Titanium diisopropoxide bis(acetylacetonate) was dispersed in absolute ethanol at a volume ratio of 1:9 to prepare a titanium dioxide dense layer precursor solution. The obtained precursor solution was spin-coated at 3000rpm for 20s, and heated on a hot plate at 100°C for 3min. The conductive substrate prepared with a dense layer was placed in a high-temperature muffle furnace and annealed at 510°C for 30 minutes, and then cooled to room temperature. Disperse the nano-mesoporous s...

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Abstract

The invention discloses a method for preparing high-efficiency perovskite solar cells by introducing sulfide additives, which belongs to the field of photovoltaic solar cells of nanometer functional devices. The structure of perovskite solar cells is a mesoporous structure: a conductive substrate, a semiconductor oxide transport layer, a mesoporous layer, an organic-inorganic hybrid perovskite layer, a hole transport layer, and a metal counter electrode. The present invention is based on methylamine lead iodide (MAPbI 3 ) and ternary cations (Cs 0.06 FA 0.79 MA 0.15 Pb(I 0.85 Br 0.15 ) 3 ) The perovskite light-absorbing layer introduces an appropriate amount of sulfide additives to regulate its growth process, realizing the construction of high-efficiency perovskite solar cells, improving the crystal quality of the perovskite light-absorbing layer and the lifetime of photogenerated carriers in the perovskite film. Defect reduction. After the treatment of the perovskite film to construct the battery, the electrical performance parameters of the device are improved, and the final performance is improved. The additive-assisted growth method has simple process and low cost, helps to improve the optical performance and stability of the perovskite photovoltaic device, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of photovoltaic solar cells of nanometer functional devices, and relates to the preparation of high-efficiency perovskite solar cells. Background technique [0002] As the basis of human life and social and economic development, energy has brought unprecedented prosperity and development of material civilization to mankind. However, with the development of human society, it is an inevitable trend that new energy sources are continuously discovered and utilized, and old energy sources are gradually replaced. At the end of the 19th century, with the excavation and use of coal and oil, the whole world entered the era of fossil energy, which greatly promoted the rapid development of industry and the industrial revolution, and further promoted the positive development and advancement of human social civilization. At the same time, while traditional fossil energy brings convenience to human beings, it also makes human bein...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/42
CPCH10K71/30H10K30/30H10K2102/00Y02E10/549
Inventor 张跃徐晨哲司浩楠康卓
Owner UNIV OF SCI & TECH BEIJING
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