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Metal halide perovskite materials, preparation method thereof as well as solar cell device and preparation method of solar cell device

A technology of metal halide and perovskite materials, which can be used in the preparation of amino compounds, organic compounds, electrical solid-state devices, etc., and can solve problems such as stability and short boards

Active Publication Date: 2019-06-21
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current maximum efficiency of small-area laboratory-grade perovskite solar cells has exceeded 23%, its stability problem is still a serious shortcoming, and the efficiency still needs to be improved.

Method used

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  • Metal halide perovskite materials, preparation method thereof as well as solar cell device and preparation method of solar cell device
  • Metal halide perovskite materials, preparation method thereof as well as solar cell device and preparation method of solar cell device
  • Metal halide perovskite materials, preparation method thereof as well as solar cell device and preparation method of solar cell device

Examples

Experimental program
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Embodiment 1

[0075] The preparation method and specific steps of a typical laboratory-level "n-i-p" type perovskite solar cell device are described. Select mixed ionic lead halide perovskite FA 0.85 MA 0.15 Pb(I 0.85 Br 0.15 ) 3 , its precursor components formamidine iodide (FAI), lead iodide (PbI 2 ), methylamine bromide (MABr), lead bromide (PbBr 2 ) is 1.02:1.05:0.18:0.18, the solvent adopts DMSO:DMF volume ratio as a mixed solvent of 1:4, and the molar concentration of the perovskite precursor solution (calculated as lead element) is 1.2 mol / L, weighed, stirred, dissolved, filtered and set aside. The preparation method of the perovskite solution with crown ether is to weigh or measure the required amount of 15-crown ether-5 and add it to the prepared perovskite solution, stir and dissolve evenly.

[0076] Cleaning of the substrate: The FTO / glass substrate is ultrasonically cleaned for about 20 minutes with detergent / water, deionized water, acetone, and isopropanol in sequence, a...

Embodiment 2

[0090] The preparation method and specific steps of a typical laboratory-level "n-i-p" type perovskite solar cell device are described. We prefer mixed ionic lead halide perovskite FA 0.85 MA 0.15 Pb(I 0.85 Br 0.15 ) 3 , its precursor components formamidine iodide (FAI), lead iodide (PbI 2 ), methylamine bromide (MABr), lead bromide (PbBr 2 ) is 1.02:1.05:0.18:0.18, the solvent adopts DMSO:DMF volume ratio as a mixed solvent of 1:4, and the molar concentration of the perovskite precursor solution (calculated as lead element) is 1.2 mol / L, weighed, stirred, dissolved, filtered and set aside. The preparation method of the perovskite solution with crown ether is to weigh or measure an appropriate amount of dibenzo-21-crown ether-7 and add it to the prepared perovskite solution, stir and dissolve evenly.

[0091] Cleaning of the substrate: The FTO / glass substrate is ultrasonically cleaned for about 20 minutes with detergent / water, deionized water, acetone, and isopropanol i...

Embodiment 3

[0101] The preparation method and specific steps of a typical laboratory-level "n-i-p" type inorganic perovskite solar cell device are described. Select the inorganic lead halide perovskite CsPbI 2 Br, its precursor components cesium iodide (CsI), lead iodide (PbI 2 ), lead bromide (PbBr 2 The molar ratio of substances between ) is 1:0.5:0.5, the solvent adopts DMF:DMSO volume ratio as a mixed solvent of 1:4, and the molar concentration of the inorganic perovskite precursor solution (calculated by lead element) is 0.7 moles / L, weighed, stirred, dissolved, filtered, and set aside. The method for preparing the inorganic perovskite solution with crown ether is to weigh or measure an appropriate amount of 18-crown ether-6 and add it to the prepared inorganic perovskite solution, stir and dissolve evenly.

[0102] Cleaning of the substrate: The FTO / glass substrate is ultrasonically cleaned for about 20 minutes with detergent / water, deionized water, acetone, and isopropanol in s...

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Abstract

The invention discloses a preparation method of metal halide perovskite materials. The method comprises steps as follows: a. introducing crown ether materials into a metal halide perovskite pecursor solution; b. treating an obtained solution from step (a) with a solution method to obtain metal halide perovskite materials, wherein the crown ether materials are selected from at least one of crown ether, heteroatomic crown ether and crown ether derivatives. The invention also provides the metal halide perovskite materials prepared with the preparation method as well as a metal halide perovskite solar cell device based on the metal halide perovskite materials and a preparation method of the device. The photovoltaic property and the stability of the solar cell device prepared from the metal halide perovskite materials are improved significantly.

Description

technical field [0001] The invention relates to the field of metal halide perovskite and solar cell devices, in particular to a high-performance metal halide perovskite material introduced with crown ether materials and a preparation method thereof, and a perovskite solar cell device and a preparation method thereof. Background technique [0002] Since metal halide perovskite solar cells were first reported in 2009, new semiconductor materials such as metal halide perovskites have attracted great attention from the scientific research community and the industry. This new type of perovskite material has the advantages of adjustable band gap, high defect tolerance, long carrier diffusion length and mobility, strong light absorption, and solution-based processability, which makes metal halide perovskite and semiconductor devices based on the perovskite, such as photovoltaics and optoelectronics, have been deeply and extensively studied. However, high-performance devices with hi...

Claims

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Application Information

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IPC IPC(8): C07C257/12C07C209/00C07C211/04C07F7/24C09K11/06H01L51/42H01L51/46
CPCY02E10/549H10K85/50H10K71/12H10K30/40
Inventor 孙宝全高鹏宋涛
Owner SUZHOU UNIV
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