Perovskite material and preparation method and application thereof

A perovskite material and reaction technology, which is applied in the direction of luminescent materials, preparation of amino compounds, chemical instruments and methods, etc., can solve the problems of poor stability and achieve good stability, good film-forming properties, and good UV anti-aging effect Effect

Inactive Publication Date: 2019-07-02
ZHIJING NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the poor stability of this type of perovskite materials has increasingly become an important factor limiting its application in the fields of luminescence and photovoltaics.

Method used

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  • Perovskite material and preparation method and application thereof
  • Perovskite material and preparation method and application thereof
  • Perovskite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Embodiment 1 prepares perovskite material (CH 2 ClNH 3 )PbCl 3

[0116] S1, CH 2 ClNH 3 Preparation of Cl organic ammonium salt

[0117] Use a 10ml pipette to measure 5ml of 33% NH 3 Ethanol solution (purity>99.9%), placed in a 100ml round bottom flask, stirred for about 10 minutes until uniform. In an ice-water bath environment, add CH with a mass fraction of 98% to the above solution while stirring. 2 Cl 2 8ml, and kept stirring for 2 hours in an ice-water bath environment to obtain a clear solution, which was distilled under reduced pressure at 60°C and a pressure of -0.1MPa with a rotary evaporator to remove the solvent. The product left in the round-bottomed flask after rotary evaporation was washed three times with anhydrous ether, filtered with suction, and dried in a vacuum oven at 40°C under a pressure of -0.1MPa for 4 hours to obtain CH 2 ClNH 3 Cl organic ammonium salt powder.

[0118] S2, (CH 2 ClNH 3 )PbCl 3 Synthesis of perovskite materials ...

Embodiment 2

[0120] Embodiment 2 prepares perovskite material (CH 2 ClNH 3 )PbBr 2 Cl

[0121] S1. Preparation of CH 2 ClNH 3 Cl

[0122] Use a 10ml pipette to measure 5ml of 33% NH 3 Ethanol solution (purity>99.9%), placed in a 20ml glass bottle, stirred for about 10 minutes until uniform. Then add CH to the above solution 2 Cl 2 Solution (purity>98%) 5ml, to obtain a clear solution, heated at 60 ° C for 12 hours, until the solvent is completely evaporated to obtain CH 2 ClNH 3 Cl solid powder.

[0123] S2, Ligand-assisted reprecipitation method preparation (CH 2 ClNH 3 )PbBr 2 Cl

[0124] The metal halide component PbBr 2 1mmol, organic ammonium salt component CH 2 ClNH 3 Add 1mmol of Cl and 1ml of organic solvent component dimethylformamide into the glass bottle, then the ratio of perovskite component to organic solvent component is (1+1): 1mol / L, which is 2:1mol / L; Then add n-octylamine 0.4mmol, and use ultrasonic treatment to obtain a clear and transparent solution a...

Embodiment 3

[0125] Embodiment 3 prepares perovskite material (CH 2 BrNH 3 )PbBr 3

[0126] S1, CH 2 BrNH 3 Preparation of Br

[0127] Use a 10ml pipette to measure 5ml of 33% NH 3 Ethanol solution (purity>99.9%), placed in a 20ml glass bottle, stirred for about 10 minutes until uniform. Then add CH to the above solution 2 Br 2 Solution (purity>98%) 8ml, to obtain a clear solution, heated at 60 ° C for 12 hours, until the solvent is completely evaporated to obtain CH 2 BrNH3 Br solid powder.

[0128] S2, using the emulsion method to synthesize (CH 2 BrNH 3 )PbBr 3 perovskite material

[0129] Weigh 1mmolCH 2 BrNH 3 The ammonium salt of Br was dissolved in 0.3ml of dimethylformamide and 1mmol of PbBr 2 Dissolve in 1ml of dimethylformamide, put them into two 5ml small centrifuge tubes and ultrasonically dissolve until clear and transparent; then weigh 10ml of toluene solution with a measuring cylinder, drop in 0.5ml of oleic acid, 20 microliters of dodecylamine, The toluene ...

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Abstract

The present application discloses a perovskite material having the chemical formula AxMyXz; wherein A comprises at least one of organic ammonium ions; the organic ammonium ion is selected from at least one of organic ammonium ions of the formula: Y1, Y2, Y3 are independently selected from H or halogen elements, and at least one of Y1, Y2, Y3 is a halogen element; M is selected from at least one ofGe, Sn, Pb, Sb, Bi, Cu, Mn, Sr, In, Tl, Ag; X is at least one selected from the group consisting of halogen elements. The perovskite system in the present application has good stability, good ultraviolet anti-aging effect, high absorption coefficient and good film-forming property, and the preparation method thereof can be used for large-scale preparation and application.

Description

technical field [0001] The application relates to a perovskite material and its preparation method and application, belonging to the field of materials and its preparation. Background technique [0002] In recent years, metal halide perovskite materials have attracted extensive attention due to their good optoelectronic properties. It has been widely studied and applied in the fields of solar cells, photodetectors and display lighting due to the characteristics of abundant and cheap synthetic raw materials and the simple solution preparation method at room temperature to obtain high-quality perovskite materials. Among the perovskite materials currently researched and applied, the most studied is ABX 3 and A 4 BX 6 type perovskite materials. Currently for ABX 3 and A 4 BX 6 There are endless reports on the preparation methods, structure regulation and application in various fields of perovskite materials. However, the current problem of poor stability of this type of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07C211/15C07C209/00C07F7/24H01L51/00C08L27/16C08L29/04C08L33/12C08K5/17C08K3/16C08K7/26C08J5/18
CPCC09K11/06C07C211/15C07F7/24C08J5/18C08J2327/16C08J2329/04C08J2333/12C08K5/17C08K3/16C08K7/26H10K85/60
Inventor 江峰黄胜钟海政
Owner ZHIJING NANOTECH CO LTD
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