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Method for preparing perovskite layer by dry method and perovskite type solar device

A technology of perovskite and dry method, which is applied in the field of preparation of perovskite materials, and can solve problems such as environmental pollution and toxicity

Active Publication Date: 2022-01-07
HUANENG CLEAN ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of preparing the perovskite material layer by the conventional solution method, a large amount of solution is used, which causes environmental pollution and is toxic.

Method used

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  • Method for preparing perovskite layer by dry method and perovskite type solar device

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Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0031] 1) Conductive electrode substrate 102: Take the transparent electrode deposited on transparent FTO as the substrate of the device as an example, the substrate area is not limited (in this case, it is 5×5cm 2 ), such products are mass-produced commercial products that can be used directly. Before use, the surface of the electrode should be ultrasonically treated with deionized water, acetone, and isopropanol for 15 minutes, then cleaned with a UV cleaner for 10 minutes, and dried with nitrogen flow for later use;

[0032] 2) On the conductive electrode substrate, the hole transport layer 104 is prepared by doctor blade coating method. Taking PEDOT:PSS as an example, the slurry used is a commercial PEDOT:PSS (AI 4083) aqueous solution, using isopropanol Dilute according to the volume ratio of 1:3, the coating speed of the blade is 15mm / s; the coating temperature is 55°C; the distance between the blade and the substrate is 50μm; after coating, it is annealed at 90°C in nit...

Embodiment 2

[0041] b) The perovskite solar device prepared by the perovskite light-absorbing layer 106 of composition is recorded as embodiment 2;

[0042] c) The perovskite solar device prepared by the perovskite light-absorbing layer 106 is referred to as Example 3.

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Abstract

The invention provides a method for preparing a perovskite layer by a dry method and a perovskite type solar device. The method comprises the steps of carrying out the blending and uniform dispersion of iodide and halogeno-amine, and obtaining a perovskite precursor material, wherein the iodide is selected from PbI2 or SnI2, and the halogeno-amine is selected from one or more of methylamine iodine, methylamine bromide, formamidine iodine and formamidine bromide; spraying the perovskite precursor material to form a film by adopting an electrostatic spraying method to obtain a thin film; and placing the thin film in methylamine gas, and then carrying out vacuum heating treatment to obtain a perovskite thin film. According to the method, a solvent is not adopted, and the perovskite layer is prepared by adopting a dry method, namely, electrostatic spraying and MA assistance, so that the use amount of a precursor material is reduced, the film forming quality is effectively improved, the non-radiation composite defect is reduced, and the efficiency of the obtained perovskite solar device is relatively high.

Description

technical field [0001] The invention belongs to the technical field of preparation of perovskite materials, and in particular relates to a dry method for preparing a perovskite layer and a perovskite solar device. Background technique [0002] Perovskite materials are widely used in optoelectronic devices due to their long carrier diffusion length, high carrier mobility, and high photoluminescence quantum yield. It has a good application prospect in flexible devices. [0003] However, in the process of preparing the perovskite material layer by the conventional solution method, a large amount of solution is used, which causes environmental pollution and is toxic. Contents of the invention [0004] In view of this, the object of the present invention is to provide a dry method for preparing a perovskite layer and a perovskite solar device. The method does not use solvents, is environmentally friendly, and the prepared solar device has higher efficiency. [0005] The inven...

Claims

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Application Information

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IPC IPC(8): H01L51/00H01L51/42H01L51/46
CPCH10K71/10H10K71/40H10K85/114H10K85/1135H10K85/211H10K30/00Y02E10/549
Inventor 肖平许世森赵志国王力军秦校军刘家梁李梦洁熊继光黄斌赵东明
Owner HUANENG CLEAN ENERGY RES INST