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Production method of perovskite thin film and preparation method of perovskite solar cell

A production method and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of difficult process, difficult mass production, and high production cost of perovskite films, so as to reduce environmental pollution and reduce costs. Membrane difficulty, good for mass production

Pending Publication Date: 2020-11-27
LONGI GREEN ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for producing a perovskite thin film and a method for preparing a perovskite solar cell, aiming to solve the problems of high production cost, difficult process and difficult mass production of large-area perovskite thin films

Method used

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  • Production method of perovskite thin film and preparation method of perovskite solar cell
  • Production method of perovskite thin film and preparation method of perovskite solar cell
  • Production method of perovskite thin film and preparation method of perovskite solar cell

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preparation example Construction

[0061] In the embodiment of the present invention, a method for preparing a perovskite battery is also provided, referring to image 3 As shown,. image 3 A flow chart of the steps of a method for preparing a perovskite solar cell in an embodiment of the present invention is shown. The method comprises the steps of:

[0062] SI, using the production method of the perovskite film as described in any one of the preceding, to obtain the perovskite film formed on the substrate.

[0063] SII, forming a second carrier transport layer and a back electrode layer sequentially on the side of the perovskite film away from the substrate; wherein, the second carrier transport layer and the first carrier transport layer included in the substrate type is reversed.

[0064] According to the preparation method of the above-mentioned perovskite battery can be as follows Figure 4 as shown, Figure 4 A schematic structural view of a perovskite solar cell in an embodiment of the present inve...

Embodiment 1

[0068] The production method of perovskite solar cell comprises steps SA1-SA5:

[0069] Step SA1, providing transparent conductive glass, and cleaning the transparent conductive glass.

[0070] Specifically, the transparent conductive glass was ultrasonically cleaned with detergent, deionized water, absolute ethanol, acetone, and isopropanol in sequence for 10 minutes (minutes), and then blown dry with nitrogen. The transparent conductive glass is a combination of the substrate and the front electrode layer, and one side of the conductive glass has the front electrode layer.

[0071] Step SA2, preparing a hole transport layer on the side of the transparent conductive glass with the front electrode layer.

[0072] Specifically, the hole transport layer is NiMgO x , it should be noted that x in the chemical formula can be selected by those skilled in the art according to the actual situation. Configure a mixture of nickel acetylacetonate and magnesium acetate dihydrate, where...

Embodiment 2

[0080] The production method of the perovskite solar cell comprises steps SB1-SB5:

[0081] Step SB1, providing transparent conductive glass, and cleaning the transparent conductive glass.

[0082] Step SB2, preparing a hole transport layer on the side of the transparent conductive glass with the front electrode layer.

[0083] The steps SB1 to SB2 are respectively the same as the aforementioned SA1 - SA2 , and will not be repeated here in order to avoid repetition.

[0084] Step SB3, preparing a perovskite thin film on the side of the hole transport layer away from the front electrode layer.

[0085] Specifically, under the protection of nitrogen, the perovskite thin film is prepared on the side of the hole transport layer away from the front electrode layer or the transparent conductive glass by scraping in the coating method. Equimolar PbI 2 and CH 3 NH 3 I was co-dissolved in a mixture of DMF and ethanol, the volume ratio of DMF and ethanol was 4:1 to obtain a 0.5 mol...

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Abstract

The invention provides a production method of a perovskite thin film and a preparation method of a perovskite solar cell, and relates to the technical field of thin film production. The production method of the perovskite thin film comprises the following steps: providing a substrate; providing a perovskite solution, wherein a solvent in the perovskite solution comprises a mixture formed by N, N-dimethylformamide and alcohol; coating the substrate with the perovskite solution to obtain a perovskite liquid film; and curing the perovskite liquid film to obtain the perovskite thin film. The surface tension of the perovskite solution is small, the perovskite solution and the substrate form good infiltration, the uniform perovskite liquid film is easy to form, the film forming difficulty is reduced, the utilization rate of the perovskite solution is improved, the use amount of the perovskite solution is reduced, the material waste is reduced, and the environmental pollution is reduced. Along with reduction of the film forming difficulty, the uniform perovskite liquid film can be produced in a coating mode, and mass production of large-area perovskite thin films is facilitated.

Description

technical field [0001] The invention relates to the technical field of thin film production, in particular to a method for producing a perovskite thin film and a method for preparing a perovskite solar cell. Background technique [0002] Large-area perovskite solar cells have high photoelectric conversion efficiency, so they have broad application prospects. However, large-area perovskite solar cells require large-area perovskite films. [0003] At present, the production methods of large-area perovskite thin films mainly include coating method and vacuum evaporation method. Among them, the vacuum evaporation method requires a relatively high degree of vacuum, which requires high equipment, high energy consumption, and high cost. As far as the vacuum evaporation method is concerned, the coating process is relatively mature, but the coating method is difficult to achieve mass production of large-area perovskite films, has high equipment requirements, high process costs, and...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/42
CPCH10K71/15H10K71/12H10K30/15Y02E10/549
Inventor 徐琛
Owner LONGI GREEN ENERGY TECH CO LTD
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