A preparation method of perovskite thin film based on magnetic field control

A technology of magnetic field regulation and perovskite, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as negative impact on the human body environment, improve short-circuit current and conversion efficiency, reduce overall size, and The effect of high extraction efficiency

Active Publication Date: 2019-09-17
XIAMEN UNIV
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Problems solved by technology

However, the use of various solvents has negative effects on the human body and even the environment during the preparation process. Therefore, it is particularly urgent to seek a non-chemical solution method of regulation

Method used

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  • A preparation method of perovskite thin film based on magnetic field control
  • A preparation method of perovskite thin film based on magnetic field control
  • A preparation method of perovskite thin film based on magnetic field control

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Embodiment

[0039] (1) Prepare the reaction solution

[0040] The specific method of configuration is to measure 2305mg of PbI 2 Drugs, 795mg MAI and 0.8ml dimethylsulfoxide (Dimethylsulfoxide, DMSO) were mixed into 4.2ml of dimethylformamide (N,N-Dimethylformamide, DMF). Then stirred at 70°C for 30min until the PbI 2 and MAI were completely dissolved to obtain the mixed solution to be tested.

[0041] (2) Adjustable growth of perovskite film

[0042] 1) Dense TiO has been formed on the heating surface in sequence 2 layer and mesoporous TiO 2 layer of FTO conductive glass substrate, so that its temperature is maintained at 140 °C.

[0043] 2) Install a rotating magnetic field device on the sample in step 1), and adjust its rotation speed to 1200 rpm and magnetic field size to 100 mt.

[0044] 3) Add the mixed solution prepared in step (1) dropwise on the sample prepared in the above 1), the dropping amount is 12 μl, scrape the mixed solution at a scraping speed of 2.5 cm / s, and then...

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Abstract

The invention discloses a method for preparing a perovskite thin film based on magnetic field control, and belongs to the technical field of solar cells. The main steps include: through a film-forming process that is easy to realize industrialization, lead(II) iodide, PbI 2 ) and methylamine iodine (CH 3 NH 3 In the mixed solution of I), a rotating magnetic field of a certain frequency and intensity is introduced during the preparation process, and then heat-treated to obtain a dense, smooth, and uniform perovskite crystal film. The method of the present invention can also prepare smooth and dense perovskite films without using vacuum equipment, glove boxes, etc., and has the advantages of low cost and large-area preparation. The perovskite crystal thin film obtained by this method is used as a light-absorbing material in thin-film solar cells, and the prepared cell device has high efficiency and good stability, which is very important for realizing low-cost preparation and industrialization of high-efficiency perovskite solar cells of great value.

Description

technical field [0001] The invention relates to a novel regulation and preparation method for a perovskite thin film, which belongs to the field of photoelectric conversion devices, and in particular to a physical regulation method for forming a perovskite light-absorbing layer of a novel perovskite solar cell. Background technique [0002] With the continuous progress of society, people's demand for non-renewable energy continues to increase, leading to its consumption is also accelerating, but also caused a sharp deterioration of the environment. In the 21st century, we are facing environmental degradation and energy depletion, which forces us to accelerate the transition from non-renewable energy systems to renewable energy systems. Therefore, the exploration of new, composite, diversified and low-cost renewable energy has attracted extensive attention from governments, scientific circles and even business circles. At present, the application of photovoltaic technology h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K85/30H10K30/00Y02E10/549
Inventor 李静林艺川尹君
Owner XIAMEN UNIV
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