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Novel CH3NH3PbI3/polyimide composite material and preparation method thereof

A technology of polyimide and composite materials, which is applied in the field of new CH3NH3PbI3/polyimide composite materials and its preparation, can solve the problem of difficult to prepare perovskite films in large quantities, limit the development of solar cells, and perovskite formation. Poor film properties and other problems, to achieve good film-forming properties, outstanding mechanical properties and dielectric properties, and difficult to form films

Inactive Publication Date: 2017-12-26
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor film-forming properties of perovskite, it is currently difficult to prepare perovskite thin films in large quantities, and the harsh processing environment limits the development of perovskite solar cells.

Method used

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  • Novel CH3NH3PbI3/polyimide composite material and preparation method thereof
  • Novel CH3NH3PbI3/polyimide composite material and preparation method thereof
  • Novel CH3NH3PbI3/polyimide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A new type of CH 3 NH 3 PB 3 The preparation method of / polyimide composite material specifically comprises the following steps:

[0027] (1)CH 3 NH 3 I and CH 3 NH 3 PB 3 Preparation: Take equimolar methylamine and hydroiodic acid into the flask, and stir for 2 hours under the protection of nitrogen at 0°C, then obtain the precipitated product by rotary evaporation, put it in an oven at 80°C for 12 hours, and obtain a dry CH 3 NH 3 I. Take equimolar CH 3 NH 3 I and PbI 2 Dissolved in anhydrous dimethylformamide (DMF) solution, and stirred at 60°C under nitrogen protection for 2h to obtain CH 3 NH 3 PB 3 .

[0028](2) Preparation of polyimide (PI): get 4mmol diaminodiphenyl ether (ODA) and 4mmol bisphenol A dianhydride (BPADA) and be dissolved in the dimethylformamide (DMF) solution of 80ml, and in Stir at 40°C under nitrogen protection for 12h, then add 2.4ml of pyridine and 4.8ml of acetic anhydride to the solution, and stir at 60°C for 6h, then at 80°...

Embodiment 2

[0031] A new type of CH 3 NH 3 PB 3 The preparation method of / polyimide composite material specifically comprises the following steps:

[0032] (1)CH 3 NH 3 I and CH 3 NH 3 PB 3 Preparation: Add equimolar methylamine and hydroiodic acid into a flask, and stir for 2 hours at 0°C under the protection of nitrogen, then obtain the precipitated product by rotary evaporation, put it in an oven at 80°C for 12 hours, and obtain a dry CH 3 NH 3 I. Take equimolar CH 3 NH 3 I and PbI 2 Dissolved in anhydrous dimethylformamide (DMF) solution, and stirred at 60°C under nitrogen protection for 2h to obtain CH 3 NH 3 PB 3 .

[0033] (2) Preparation of polyimide (PI): get 4mmol diaminodiphenyl ether (ODA) and 4mmol bisphenol A dianhydride (BPADA) and be dissolved in the dimethylformamide (DMF) solution of 80ml, and in Stir at 40°C under nitrogen protection for 12h, then add 2.4ml of pyridine and 4.8ml of acetic anhydride to the solution, and stir at 60°C for 6h, then at 80°C ...

Embodiment 3

[0036] A new type of CH 3 NH 3 PB 3 The preparation method of / polyimide composite material specifically comprises the following steps:

[0037] (1)CH 3 NH 3 I and CH 3 NH 3 PB 3 Preparation: Add equimolar methylamine and hydroiodic acid into a flask, and stir for 2 hours at 0°C under the protection of nitrogen, then obtain the precipitated product by rotary evaporation, put it in an oven at 80°C for 12 hours, and obtain a dry CH 3 NH 3 I. Take equimolar CH 3 NH 3 I and PbI 2 Dissolved in anhydrous dimethylformamide (DMF) solution, and stirred at 60°C under nitrogen protection for 2h to obtain CH 3 NH 3 PB 3 .

[0038] (2) Preparation of polyimide (PI): get 4mmol diaminodiphenyl ether (ODA) and 4mmol bisphenol A dianhydride (BPADA) and be dissolved in the dimethylformamide (DMF) solution of 80ml, and in Stir at 40°C under nitrogen protection for 12h, then add 2.4ml of pyridine and 4.8ml of acetic anhydride to the solution, and stir at 60°C for 6h, then at 80°C ...

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Abstract

The invention discloses a novel CH3NH3PbI3 / polyimide composite material and a preparation method thereof. The preparation method comprises the following steps: (1) preparation of CH3NH3I and CH3NH3PbI3; (2) preparation of polyimide; (3) preparation of the CH3NH3PbI3 / polyimide composite material, i.e., dissolving the prepared polyimide into dimethyl formamide, adding the CH3NH3PbI3 into a solution, stirring with great force under room temperature, pouring an obtained uniform mixture onto a glass plate with a silica gel mould, performing programmed heating in a muffle furnace, after heating is ended, cooling to room temperature, and stripping to obtain a CH3NH3PbI3 / polyimide composite film. According to the CH3NH3PbI3 / polyimide composite material prepared by the preparation method, a perovskite / polyimide composite material is prepared by means of excellent film-forming property of the polyimide; electrical property of perovskite and mechanical property of the polyimide are both achieved; the CH3NH3PbI3 can serve as an electron absorption layer, the polyimide can serve as a hole transport layer, thus forming a perfect conductive network and facilitating the application of a perovskite composite material in a solar cell.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to a novel CH 3 NH 3 PB 3 / Polyimide composite material and preparation method thereof. Background technique [0002] Organic-inorganic perovskite materials are widely used in light-emitting diodes, field effect transistors, photovoltaic equipment and other fields, because it is a composite material on a molecular scale and has excellent properties of organic and inorganic dual components. CH 3 NH 3 wxya 3 It is an organic-inorganic hybrid material with typical ABX 3 The perovskite structure is a kind of ambipolar semiconductor material, and has low cost, narrow energy band, excellent light absorption properties and high electron mobility. Therefore, it is widely used in solar cells, CH 3 NH 3 PB 3 It is one of the most widely used. [0003] However, the processing of perovskite batteries requires harsh conditions, such as the primary environmental stability, p...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/08C08K5/16C08G73/10
CPCC08G73/1071C08J5/18C08J2379/08C08K5/16C08L2203/16C08L2203/204C08L79/08
Inventor 徐祖顺李庆栗静
Owner HUBEI UNIV
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