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Phosphine-containing perylene diimide interface material, synthesis method thereof and solar cell

A perylene diimide and interface material technology, which is applied in the field of solar cells, can solve the problems of low photoelectric conversion efficiency and stability performance of perovskite solar cells, unfavorable large-scale commercial applications, etc., to reduce interface defects, Improving the effect of interface defects and improving interface barriers

Pending Publication Date: 2020-10-16
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing interface materials, such as Ca, LiF, TiO x Inorganic materials such as BCP, bis-C60, PFN and other organic materials are not conducive to Large-scale commercial application
Moreover, the reported interface materials do not improve the photoelectric conversion efficiency and stability of perovskite solar cells very much, and the efficiency of perovskite solar cells is generally below 18%.

Method used

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  • Phosphine-containing perylene diimide interface material, synthesis method thereof and solar cell
  • Phosphine-containing perylene diimide interface material, synthesis method thereof and solar cell
  • Phosphine-containing perylene diimide interface material, synthesis method thereof and solar cell

Examples

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Effect test

Embodiment 1

[0030] A kind of interface material, its preparation method comprises the following steps:

[0031] S1. Polymerize 3,4,9,10-perylenetetracarboxylic dianhydride and bis(3-aminopropyl)phenylphosphine precursor at high temperature. Specifically, the two precursors were placed in the same sealed tube at a mass ratio of 1:1, and imidazole was used to provide a basic environment and act as a reaction solvent at the same time, and the polymerization reaction was carried out at 180 °C.

[0032] S2, using 10wt% K 2 CO 3 The solution is reacted with alkaline solution to remove insoluble monomers not completely reacted in step S1, and then filtered, and the retentate is washed with distilled water and ethanol in sequence, and then dried to obtain an interface material.

Embodiment 2

[0034] A kind of interface material, its preparation method comprises the following steps:

[0035] S1. According to the mass ratio of 1:1, take the reaction monomer bis(3-aminopropyl)phenylphosphine and 1,6,7,12-tetrachloro-3,4,9,10-tetracarboxylic dianhydride to Molten imidazole was used as the reaction solvent, and refluxed at 180°C for 8 hours under the protection of nitrogen, so that the reaction monomers were polymerized;

[0036] S2. Cool the reaction system obtained in step S1 to room temperature, and then mix with 10wt% K 2 CO 3 The solution was reacted for 3 hours to remove the incompletely reacted monomer in step S1 through alkali reaction, and then filtered, and the retentate was washed with deionized water and ethanol in sequence, and then dried to obtain an interface material.

Embodiment 3

[0038] A kind of interface material, its preparation method comprises the following steps:

[0039] S1. According to the mass ratio of 1:1, take the reaction monomer bis(3-aminopropyl)phenylphosphine and 1,6,7,12-tetrachloro-3,4,9,10-tetracarboxylic dianhydride to N-methylpyrrolidone is used as a solvent, reflux reaction at 180°C for 8 hours under nitrogen protection, and reflux reaction under nitrogen protection, so that the reaction monomers undergo polymerization reaction;

[0040] S2. Cool the reaction system obtained in step S1 to room temperature, and then mix with 10wt% K 2 CO 3 The solution was reacted for 3 hours to remove the incompletely reacted monomer in step S1 by alkaline reaction, and then filtered, and the retentate was washed with distilled water and ethanol in sequence, and then dried to obtain an interface material.

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Abstract

The invention discloses a phosphine-containing perylene diimide interface material, a synthesis method thereof and a solar cell. The structural formula of the interface material is shown in the specification, in the formula, R1, R2, R3, R4, R5, R6, R7, R8 and R9 are respectively and independently selected from hydrogen, halogen, hydroxyl, sulfydryl, amino, substituted or unsubstituted C1-18 alkyl,substituted or unsubstituted aryl and substituted or unsubstituted heterocyclic radical; R10 and R11 are independently selected from substituted or unsubstituted C1-18 alkyl groups, substituted or unsubstituted aryl groups and substituted or unsubstituted heterocyclic groups, and hydrogen atoms on substituted groups are substituted by one or more of the following substituent groups: alkyl groups,hydroxyl groups, amido groups and halogens. The interface material can be applied to a perovskite solar cell, and the photoelectric conversion efficiency and stability of the perovskite solar cell can be improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a phosphine-containing perylene diimide interface material, a synthesis method thereof, and a solar cell. Background technique [0002] As a clean and renewable energy source, solar energy is not only rich in resources, but also does not produce a large amount of greenhouse gases like fossil fuels. Making full use of solar energy is one of the best solutions to global climate change and energy crisis. Solar cells can directly convert solar radiation energy into electrical energy. How to obtain high-efficiency and low-cost solar cells is a research hotspot in the field of solar cells. In recent years, perovskite solar cells (PSCs) have attracted much attention due to their high absorption coefficient, low exciton binding energy, high mobility, long exciton diffusion length, and low-cost processability. In the past ten years, the efficiency of perovskite solar cells has increa...

Claims

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Application Information

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IPC IPC(8): C08G73/10H01L51/42H01L51/46
CPCC08G73/1067C08G73/1057C08G73/1039C08G73/1007H10K85/111H10K85/151H10K30/15H10K30/10Y02E10/549
Inventor 杨世和郑世昭王高鹏
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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