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Organic-inorganic hybrid perovskite powder and preparation method and application thereof

A perovskite and inorganic technology, applied in the field of organic-inorganic hybrid perovskite powder and its preparation, can solve the problem that the aging of the perovskite precursor mixture cannot be effectively controlled, the composition of the perovskite powder is single, and the stability needs to be improvement and other problems, to achieve the effects of controllable stoichiometric ratio, high repeatability of film quality, and improved optoelectronic properties

Active Publication Date: 2020-10-16
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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  • Organic-inorganic hybrid perovskite powder and preparation method and application thereof
  • Organic-inorganic hybrid perovskite powder and preparation method and application thereof
  • Organic-inorganic hybrid perovskite powder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0038] (2) Place the above-mentioned round-bottomed flask in an oil bath at 80-120° C., and keep stirring. After 10-120 minutes of reaction, black organic-inorganic hybrid perovskite crystals FAPbI precipitated at the bottom of the round-bottomed flask 3 .

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

[0040] (4) the organic-inorganic hybrid perovskite powder FAPbI of the present embodimen...

Embodiment 2

[0046] (1) 1mmol MAI (methylamine iodide; CH 3 NH 3 1) and 1.05mmol 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) Place the above-mentioned round-bottomed flask in an oil bath at 80-120° C., and keep stirring. After 10-120 minutes of reaction, black organic-inorganic hybrid perovskite crystal MAPbI precipitated at the bottom of the round-bottomed flask 3 .

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

[0049] (4) the organic-inorganic hybrid perovskite powder MAPbI of the present embodiment 3 Dissolve in a mixed solution of...

Embodiment 3

[0052] (1) Mix 1mmol FAI (formamidine iodide) and 1.05mmol 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) Place the above-mentioned round-bottomed flask in an oil bath at 80-120° C., and keep stirring. After 10-120 minutes of reaction, black organic-inorganic hybrid perovskite crystals FAPbI precipitated at the bottom of the round-bottomed flask 3 .

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

[0055] (4) the organic-inorganic hybrid perovskite powder FAPbI of the present embodiment 3 Dissolve in a mixed solution ...

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Abstract

The invention provides organic-inorganic hybrid perovskite powder and a preparation method and application thereof, and the method comprises the following main steps: taking a component 1 and a component 2, mixing, dissolving the components in a coordination solvent, and stirring the components until the components are completely dissolved to obtain a mixed solution; heating the mixed solution, performing stirring continuously, reacting the mixed solution, and separating out an organic-inorganic hybrid perovskite crystal; finally, filtering the organic-inorganic hybrid perovskite crystal, andcarrying out vacuum drying to obtain the organic-inorganic hybrid perovskite powder. The coordination solvent disclosed by the invention is one of diethanol methyl ether, dipropanol methyl ether, dibutanol methyl ether, ethanolamine and methyl esters, and the weak interaction between a coordination solvent and metal ions is utilized, so the solubility of the perovskite material can be improved, aprecursor with good stability is formed, and the high-throughput synthesis of organic-inorganic hybrid perovskite powder with different components is realized; and the prepared powder is good in structural stability and can be used for controllably preparing a flat film layer, so the purpose of improving the efficiency of the prepared corresponding device is achieved.

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 The octahedron forms a network structure by sharing basic units, and A exists in the vacancies. Therefore, free electrons and holes are generated when illuminated, and are 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 photovoltaic devices (perovskite solar cell, PSC) has exceeded 25%, surpassing the traditional CIGS, CdTe and the efficiency of polysilicon cells. [0003] Potential stoichiometric deviations and / or non-perovskite phase impurities in the perovskite precursor ...

Claims

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Application Information

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Patent Type & Authority Applications(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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