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Method for preparing large-area semitransparent perovskite thin film by using scraper coating method and application of large-area semitransparent perovskite thin film

A blade coating, perovskite technology, used in semiconductor devices, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of limited large-area preparation, complex process, high energy consumption, etc., and achieve excellent thermodynamic stability, Simple process, effective absorption and utilization

Inactive Publication Date: 2020-07-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the reported high-efficiency perovskite thin films are prepared by spin-coating method. The spin-coating method can achieve high photoelectric conversion efficiency of the device, but the process is complicated, and the process itself limits the large-area preparation. The spin-coating method Can only achieve less than 5cm 2 effective working area, which means that the spin-coating method is a fatal flaw for the commercialization of perovskite solar cells
In addition, there are also perovskite thin films prepared by vacuum evaporation, but there are also disadvantages of high energy consumption and high cost.

Method used

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  • Method for preparing large-area semitransparent perovskite thin film by using scraper coating method and application of large-area semitransparent perovskite thin film
  • Method for preparing large-area semitransparent perovskite thin film by using scraper coating method and application of large-area semitransparent perovskite thin film
  • Method for preparing large-area semitransparent perovskite thin film by using scraper coating method and application of large-area semitransparent perovskite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing a large-area, translucent perovskite film using a doctor blade coating method is provided, and the specific steps are as follows:

[0041] 1) Preparation of perovskite precursor solution

[0042] Weigh 256.9mg PbBr 2 , 87.5mg FABr and dissolve it in 800μL DMF and DMSO mixed solution (DMF and DMSO volume ratio is 4:1); continue to dropwise add 40ul of lecithin DMF and DMSO mixed solution, place on a magnetic stirrer and stir Stand by for 2 hours to obtain a perovskite precursor solution of about 0.7M, wherein the concentration of lecithin in the perovskite precursor solution is 0.2mg / mL.

[0043] 2) Coating of perovskite precursor solution

[0044] 5×2.5cm 2 Put the FTO glass substrate into the PLASMA plasma cleaning machine to clean for 5 minutes to enhance the wettability of the FTO glass substrate to the perovskite precursor solution. Set the substrate of the blade coater to a preheating temperature of 150°C, and place the FTO glass substrat...

Embodiment 2

[0048] A method for preparing a large-area, translucent perovskite film using a doctor blade coating method is provided, and the specific steps are as follows:

[0049] 1) Preparation of perovskite precursor solution

[0050] Weigh 256.9mg PbBr 2 , 87.5mg FABr and dissolve it in the mixed solution of 800μL DMF and DMSO (the volume ratio of DMF and DMSO is 4:1), continue to add dropwise the mixed solution of DMF and DMSO of 40ul cetyltrimethylammonium bromide Place it on a magnetic stirrer and stir for 2 hours to obtain a 0.7 M perovskite precursor solution, wherein the concentration of cetyltrimethylammonium bromide in the perovskite precursor solution is 0.2 mg / mL.

[0051] 2) Coating of perovskite precursor solution

[0052] 5×2.5cm 2 Put the FTO glass substrate into the PLASMA plasma cleaning machine to clean for 5 minutes to enhance the wettability of the FTO glass substrate to the perovskite precursor solution. Set the substrate of the blade coater to a preheating tem...

Embodiment 3

[0058] A method for preparing a large-area, translucent perovskite film using a doctor blade coating method is provided, and the specific steps are as follows:

[0059] 1) Preparation of perovskite precursor solution

[0060] Weigh 256.9mg PbBr 2 , 87.5mg FABr and dissolve it in 800 μL of DMF and DMSO mixed solution (DMF and DMSO volume ratio is 4:1), continue to drop 40ul of DMF and DMSO mixed solution of sodium dodecylsulfonate and place it under magnetic force Stir on the stirrer for 2 hours and wait for use to obtain a 0.7M perovskite precursor solution, wherein the concentration of sodium dodecylsulfonate in the perovskite precursor solution is 0.2 mg / mL.

[0061] 2) Coating of perovskite precursor solution

[0062] 5×2.5cm 2 Put the FTO glass substrate into the PLASMA plasma cleaning machine to clean for 5 minutes to enhance the wettability of the FTO glass substrate to the perovskite precursor solution. Set the substrate of the blade coater to a preheating temperatu...

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Abstract

The invention discloses a method for preparing a large-area semitransparent perovskite thin film by using a scraper coating method and application thereof. The method comprises the following steps of:preparing an FAPbBr3 perovskite precursor solution containing a surfactant; preheating the FTO glass substrate and a scraper coating machine; an FTO glass substrate is used as a zero-point height; and setting the coating height of a scraper, dropwise adding the FAPbBr3 perovskite precursor solution into a gap between the FTO glass substrate and the scraper, operating the scraper coating machine,driving the perovskite precursor solution to be fully paved on the FTO glass substrate by the scraper to obtain a perovskite precursor film, and annealing to obtain the large-area semitransparent perovskite film. The method is simple in process, high in efficiency and low in cost, and the obtained perovskite thin film is large in area and good in quality and can be applied to the field of solar photovoltaic power generation energy.

Description

technical field [0001] The invention belongs to the field of perovskite thin films, and in particular relates to a method for preparing large-area, translucent perovskite thin films by using a doctor blade coating method and an application thereof. Background technique [0002] Since the industrial revolution, human consumption of energy has been increasing day by day. For a long time, fossil energy has been the main source of energy for human beings. However, since fossil energy is a non-renewable energy, human beings will eventually face the problem of fossil energy depletion. Therefore, it is very important to develop renewable new energy and realize sustainable development. [0003] Since the 1960s and 1970s, new energy sources such as water energy, biomass energy, wind energy, and solar energy have been developed and utilized one after another. For the earth, solar energy is the renewable energy with the largest reserves. According to statistics, the solar radiation...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/46H01L51/42
CPCH10K71/12H10K71/40H10K85/60H10K30/151Y02E10/549Y02P70/50
Inventor 张奇应杭凯钟杰
Owner WUHAN UNIV OF TECH
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