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Spray pyrolysis method of nickel oxide and perovskite solar cell

A spray pyrolysis, nickel oxide technology, applied in the field of solar cells, can solve problems such as unfavorable acquisition, poor liquid wettability, uniform thin film, etc.

Pending Publication Date: 2022-07-08
HUANENG NEW ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact angle of a droplet is strongly dependent on its surface tension, a larger surface tension means a larger contact angle, i.e. the liquid is less wettable, tending to create a spherical cap shape rather than forming a thin Wet layer, which is not conducive to obtaining a uniform film and is not conducive to the adhesion of subsequent films

Method used

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  • Spray pyrolysis method of nickel oxide and perovskite solar cell
  • Spray pyrolysis method of nickel oxide and perovskite solar cell
  • Spray pyrolysis method of nickel oxide and perovskite solar cell

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preparation example Construction

[0052] The present invention also provides a preparation method of the above perovskite solar cell, comprising: compounding a nickel oxide hole transport layer on the surface of the first electrode; coating a perovskite active material precursor solution on the surface of the nickel oxide hole transport layer forming a perovskite active layer; compounding an electron transport layer on the surface of the perovskite active layer; forming a second electrode on the surface of the electron transport layer to obtain a perovskite solar cell.

[0053] Wherein, the first electrode, the hole transport layer, the perovskite active layer, the electron transport layer and the second electrode are the same as described above, and will not be repeated here.

[0054] In the present invention, it is preferable to form the first electrode on the substrate first; the substrate is the same as the above, and will not be repeated here; when the substrate is a glass substrate, it is preferable to us...

Embodiment 1

[0062] 15.7635g of Ni (NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of deionized water to obtain Ni(NO 3 ) 2 solution, to Ni(NO 3 ) 2 The solution was added dropwise to 10mol·L -1 NaOH aqueous solution to the solution pH=10, at this time, a precipitate was formed in the solution, the solution was magnetically stirred for 5 min, and then the precipitate was washed with deionized water 3 times, and the precipitate was dried at 80 °C for 6 h, and then placed in a muffle furnace. Annealed at 270 °C for 2 h to obtain NiOx nanoparticles.

[0063] The NiOx nanoparticles were dissolved in deionized water and sonicated for 8 h to obtain a 0.08 mol / L precursor solution. The NiOx precursor solution was deposited on the FTO by spraying equipment, cycled 8 times, the spraying speed was 5 mm / s, and the spraying height was 50 cm to obtain a NiOx hole transport layer with a thickness of 30 nm, which was then annealed at 130 °C for 30 min.

[0064] Use atomic force microscope to analyze th...

Embodiment 2

[0066] 15.7635g of Ni (NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of deionized water to obtain Ni(NO 3 ) 2 solution, to Ni(NO 3 ) 2 The solution was added dropwise to 10mol·L -1 NaOH aqueous solution to the solution pH=10, at this time a precipitate was formed in the solution, the solution was magnetically stirred for 5 min, then the precipitate was washed with deionized water 3 times, and the precipitate was dried at 80 °C for 6 h, and then placed in a muffle furnace. Annealed at 270 °C for 2 h to obtain NiOx nanoparticles.

[0067] The NiOx nanoparticles were dissolved in deionized water and isopropanol, wherein the volume ratio of deionized water and isopropanol was 9:1, and then sonicated for 8 h to obtain a 0.1 mol / L precursor solution. The NiOx precursor solution was deposited on the FTO by spraying equipment, cycled 8 times, the spraying speed was 5 mm / s, and the spraying height was 50 cm to obtain a NiOx hole transport layer with a thickness of 30 nm, which was th...

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Abstract

The invention provides a nickel oxide spray pyrolysis method which comprises the following steps: S1) mixing nickel salt with water to obtain a nickel salt solution; s2) mixing the nickel salt solution with a precipitant solution to obtain a precipitate; s3) calcining the precipitate to obtain nickel oxide nanoparticles; s4) mixing the nickel oxide nanoparticles with water and / or isopropanol, and performing ultrasonic treatment to obtain a nickel oxide precursor solution; and S5) carrying out spray deposition on the nickel oxide precursor solution, and then carrying out annealing treatment to obtain the nickel oxide film. Compared with the prior art, the method has the advantages that the surface tension and the viscosity of the nickel oxide spraying solution are adjusted by adjusting different solvents and the volume ratio of the solvents, so that the nickel oxide spraying solution is more easily atomized into small particles during spray pyrolysis, and the uniformity of a film is better.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a spray pyrolysis method of nickel oxide and a perovskite solar cell. Background technique [0002] Solar cells can convert solar energy into electrical energy through photoelectric conversion, which can be directly used by people and has attracted much attention. According to the development of solar cells and the light absorbing layer materials used, solar cells can be divided into three categories. The first type is silicon-based solar cells, including monocrystalline silicon, polycrystalline silicon solar cells, amorphous silicon thin-film solar cells, and silicon tandem solar cells; the second type is compound solar cells, including copper indium gallium selenide (CIGS), tellurium Cadmium (CdTe), gallium arsenide (GaAs), and perovskite solar cells; the third category is new solar cells, including dye-sensitized solar cells, organic solar cells, and quantum d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04
CPCC01G53/04C03C17/3417B82Y30/00B82Y40/00C01P2004/04C01P2004/03C03C2218/112C03C2218/32H10K30/15H10K30/10Y02P70/50Y02E10/549
Inventor 李梦洁赵志国赵东明秦校军冯笑丹刘家梁
Owner HUANENG NEW ENERGY CO LTD
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