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A kind of organic-inorganic hybrid perovskite powder and its preparation method and application

A perovskite and inorganic technology, applied in the field of organic-inorganic hybrid perovskite powder and its preparation, can solve the problem that the perovskite powder has a single component and cannot effectively control the aging and stability of the perovskite precursor mixture Improvement and other problems, to achieve the effect of high film quality repeatability, controllable stoichiometric ratio, and improved photoelectric performance

Active Publication Date: 2022-06-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the perovskite powder prepared by the above method has a single component, and the stability of the structure itself still needs to be improved, so the aging of the perovskite precursor mixture cannot be effectively controlled.

Method used

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  • A kind of organic-inorganic hybrid perovskite powder and its preparation method and application
  • A kind of organic-inorganic hybrid perovskite powder and its preparation method and application
  • A kind of organic-inorganic hybrid perovskite powder and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) 1 mmol of FAI (formamidine iodide; HC (NH) 2 ) 2 I) and 1.05 mmol PbI 2 (lead iodide) was dissolved in 0.5-2 mL of diethyl ether solvent, and the mixture was continuously stirred for 1 h to obtain a mixed solution, which was then transferred to a round-bottomed flask.

[0038] (2) The above round-bottomed flask was placed in an oil bath at 80 to 120°C, and stirring was continued. After 10-120 min of reaction, black organic-inorganic hybrid perovskite crystal FAPbI was precipitated at the bottom of the round-bottomed flask. 3 .

[0039] (3) The organic-inorganic hybrid perovskite crystal FAPbI obtained by precipitation 3 Filter, remove diethanol methyl ether, and dry the solvent remaining on the crystal surface with filter paper, and place it in a vacuum drying oven at 120 ° C to dry to obtain the organic-inorganic hybrid perovskite powder FAPbI of this embodiment. 3 . The calculated yield is 80-90%.

[0040] (4) The organic-inorganic hybrid perovskite powder ...

Embodiment 2

[0046] (1) 1 mmol MAI (methylamine iodide; CH 3 NH 3 I) and 1.05 mmol PbI 2 (lead iodide) was dissolved in 1-2 mL of ethanolamine solvent, and stirred continuously for 1 h to obtain a mixed solution, which was then transferred to a round-bottomed flask.

[0047] (2) The above round-bottomed flask was placed in an oil bath at 80 to 120°C, and stirring was continued. After 10-120 min of reaction, black organic-inorganic hybrid perovskite crystal MAPbI was precipitated at the bottom of the round-bottomed flask. 3 .

[0048] (3) The organic-inorganic hybrid perovskite crystal MAPbI obtained by precipitation 3 Filter, remove ethanolamine, dry the solvent remaining on the crystal surface with filter paper, and place it in a 120°C vacuum drying oven to dry to obtain the organic-inorganic hybrid perovskite powder MAPbI of this example 3 . The calculated yield is 80-90%.

[0049] (4) The organic-inorganic hybrid perovskite powder MAPbI of this embodiment 3 Dissolved in a mixed ...

Embodiment 3

[0052] (1) 1 mmol FAI (formamidine iodide) and 1.05 mmol PbI 2 (lead iodide) was dissolved in 1-2 mL of dimethyl carbonate solvent, and stirred continuously for 1 h to obtain a mixed solution, which was then transferred to a round-bottomed flask.

[0053] (2) The above round-bottomed flask was placed in an oil bath at 80 to 120°C, and stirring was continued. After 10-120 min of reaction, black organic-inorganic hybrid perovskite crystal FAPbI was precipitated at the bottom of the round-bottomed flask. 3 .

[0054] (3) The organic-inorganic hybrid perovskite crystal FAPbI obtained by precipitation 3 Filter, remove dimethyl carbonate, and dry the solvent remaining on the crystal surface with filter paper, and place it in a vacuum drying oven at 120 ° C to dry to obtain the organic-inorganic hybrid perovskite powder FAPbI of this embodiment. 3 . The calculated yield is 80-90%.

[0055] (4) The organic-inorganic hybrid perovskite powder FAPbI of this embodiment 3 Dissolved i...

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Abstract

The invention provides an organic-inorganic hybrid perovskite powder and its preparation method and application. The main steps of the method are: mixing components 1 and 2, dissolving them in a coordination solvent, and stirring until completely dissolved to obtain Mixed solution; heat the mixed solution and keep stirring to make the mixed solution react and precipitate organic-inorganic hybrid perovskite crystals; finally filter and vacuum-dry the organic-inorganic hybrid perovskite crystals to obtain organic-inorganic hybrid calcium Titanium powder. The coordination solvent of the present invention is one of diethanol methyl ether, dipropanol methyl ether, dibutanol methyl ether, ethanolamine and methyl esters, and the weak interaction between the coordination solvent and metal ions can be used to improve calcium Titanium material solubility, forming a stable precursor, realizing high-throughput synthesis of organic-inorganic hybrid perovskite powders with different components, the prepared powder has good structural stability, and can be used to control the preparation of flat films layer, thereby achieving the purpose of improving the efficiency of the corresponding device.

Description

technical field [0001] The invention belongs to the technical field of perovskite materials, and in particular relates to an organic-inorganic hybrid perovskite powder and a preparation method and application thereof. Background technique [0002] Perovskites are a class of ABX 3 material in form. Its basic structural unit is BX 6 Octahedrons, which form a network structure by sharing basic units, A exist in vacancies. Therefore, when free electrons and holes are generated after illumination, they will be transported in three-dimensional directions. Due to its high absorption coefficient and mobility, it is very suitable for the preparation of high-efficiency photovoltaic devices. At present, the efficiency of perovskite solar cell (PSC) has exceeded 25%, surpassing the traditional CIGS, CdTe and the efficiency of polycrystalline silicon cells. [0003] Potential stoichiometric deviations and / or non-perovskite phase impurities in the perovskite precursor mixture result ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCH10K71/00H10K85/30H10K30/30Y02E10/549
Inventor 李静陈睿豪尹君吴炳辉郑南峰
Owner XIAMEN UNIV
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