Interface modification method for improving environmental stability of perovskite solar cell

A technology of environmental stability and interface modification, applied in the field of solar cells, can solve problems such as the challenge of the service life of perovskite solar cells, and achieve the effects of improving photoelectric conversion efficiency, reducing ion migration channels, and improving environmental stability.

Pending Publication Date: 2022-05-31
安徽速牛智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the commercial application of perovskite solar cells mainly faces the challenge of service life
Therefore, continuing to develop and explore ways to improve the stability of perovskite solar cells is the biggest challenge at present.

Method used

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  • Interface modification method for improving environmental stability of perovskite solar cell
  • Interface modification method for improving environmental stability of perovskite solar cell
  • Interface modification method for improving environmental stability of perovskite solar cell

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Embodiment 1

[0037] The perovskite solar cell device after a kind of interface modification of the present embodiment, its structure comprises successively from top to bottom: gold electrode (anode), hole transport layer (Spiro-OMeTAD), perovskite light-absorbing layer ((FAPbI 3 ) 0.925 (MAPbBr 3 ) 0.05 (CsPbI 3 ) 0.025 ), electron transport layer (SnO 2 ) and ITO conductive glass (cathode), wherein the side and upper surface of the perovskite light-absorbing layer are combined with hexadecyltrimethylammonium hexafluorophosphate (see figure 1 ).

[0038] The battery preparation method is simple, comprising the following steps:

[0039] (1) Put the ITO glass (size: 1.5cm×2.0cm) into tap water containing detergent for 15 minutes, then use acetone, ethanol, and ultrapure water for 15 minutes respectively, and finally take it out and dry it with a hair dryer or an oven Dry (70° C.) to obtain the cleaned ITO conductive glass.

[0040] (2) UV treatment is performed on the cleaned ITO con...

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Abstract

The invention provides an interface modification method for improving the environmental stability of a perovskite solar cell. The interface modification method comprises the following steps: cleaning an ITO conductive glass substrate; preparing a SnO2 electron transport layer on the ITO conductive glass substrate; preparing a perovskite precursor solution; preparing the perovskite precursor solution on the electron transport layer through a spin-coating method, and then annealing to prepare a perovskite light absorption layer; the preparation method comprises the following steps: dissolving hexadecyl trimethyl ammonium hexafluorophosphate in an isopropanol solution to prepare an interface modifier precursor solution; spin-coating the surface of the perovskite thin film with the interface modifier precursor solution, and then annealing; preparing a hole transport layer on the perovskite thin film; and evaporating an electrode on the hole transport layer. According to the invention, the pseudo-halogen molecules and the long-chain organic cations with super-strong hydrophobicity are introduced for interface modification, so that the surface defects of the perovskite thin film can be effectively reduced, the surface hydrophobicity of the thin film is improved, and the stability and efficiency of the perovskite solar cell are enhanced.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to an interface modification method for improving the environmental stability of perovskite solar cells. Background technique [0002] Using photovoltaic technology to realize power generation is one of the important ways to obtain energy at present. With the development of human society's demand for energy consumption and the increasing awareness of ecological environment protection, traditional fossil energy will not be able to meet the needs of human development and the requirements for environmental protection. Therefore, renewable and pollution-free solar energy will occupy an increasing proportion in the entire energy structure. Especially under the leadership of the dual carbon targets, using solar energy to generate electricity is undoubtedly an effective way to reduce carbon emissions. The research and development of high-efficiency, stable and low-cost solar cells is the basis...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/42
CPCH10K71/12H10K71/441H10K30/15Y02E10/549
Inventor 潘旭刘国震叶加久徐申东张辉
Owner 安徽速牛智能科技有限公司
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