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Hole Transport Polymers Containing Benzyl Alcohol Groups and Their Applications

A technology of hole transport and polymer, which is applied in the field of perovskite solar cells, can solve the problems of poor wettability of perovskite precursor, limitation of large-area device preparation, and incomplete coverage of perovskite layer, etc., to achieve easy large-scale preparation , Conducive to the effect of effective extraction and easy purification

Active Publication Date: 2022-05-06
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used as a hole-transporting layer in trans-PSC devices, the hydrophobic nature of PTAA makes the perovskite precursor solution poorly wet on its surface, resulting in incomplete coverage of the perovskite layer. [12]
This is not only not conducive to the improvement of battery efficiency, but also limits the preparation of large-area devices.
Also, PTAA itself is expensive [13] , which also limits its future large-scale application

Method used

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  • Hole Transport Polymers Containing Benzyl Alcohol Groups and Their Applications
  • Hole Transport Polymers Containing Benzyl Alcohol Groups and Their Applications
  • Hole Transport Polymers Containing Benzyl Alcohol Groups and Their Applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Synthesis of polymer P1:

[0071] Under argon, 0.1078g (0.25mmol) of compound 5, 0.1739g (0.25mmol) of compound 8, 0.46mg of Pd(OAc) 2 , 1.64mg of phosphine ligand Sphos, 5.00mg of phase transfer catalyst Aliquat 336 and 5mL of anhydrous toluene were mixed and stirred. After heating to 95°C, an oxygen-free potassium carbonate aqueous solution (2M, 0.8mL) was added, and then stirred at 95°C for 5 hours. Add 15.00 mg of phenylboronic acid and react for 5 hours and 0.50 mL of bromobenzene for 5 hours. Cool down to 80°C and add 1.00 g of sodium diethyldithiocarbamate, and continue stirring for 24 hours. After the reaction was completed, it was extracted with dichloromethane, washed with water three times, and dried over anhydrous sodium sulfate. After filtration and concentration, the product was settled into 150 mL of methanol. The resulting solid, 12.58 mg (0.33 mmol) of sodium borohydride and 60 mL of dichloromethane were stirred at reflux under an argon atmosphere fo...

Embodiment 2

[0074] Synthesis of polymer P2:

[0075] Under argon, 0.1644g (0.25mmol) of compound 6, 0.1278g (0.25mmol) of compound 10, 0.46mg of Pd(OAc) 2 , 1.64mg of phosphine ligand Sphos, 5.00mg of phase transfer catalyst aliquat 336 and 5mL of anhydrous toluene were mixed and stirred, and after the temperature was raised to 95°C, an oxygen-free potassium carbonate aqueous solution (2M, 0.8mL) was added, then stirred at 95°C for 5 hours, and then sequentially Add 15.00 mg of phenylboronic acid for 5 hours and 0.50 mL of bromobenzene for 5 hours. Cool down to 80°C, add 1.00 g of sodium diethyldithiocarbamate, and continue stirring for 24 hours. After the reaction was completed, it was extracted with dichloromethane, washed with water three times, and dried over anhydrous sodium sulfate. Filter, concentrate, and settle the product into 150 mL of methanol. The resulting solid, 12.58 mg (0.33 mmol) of sodium borohydride and 60 mL of dichloromethane were stirred at reflux under an argon ...

Embodiment 3

[0078] Synthesis of polymer P3:

[0079] Under argon, 0.1644g (0.25mmol) of compound 6, 0.1313g (0.25mmol) of compound 9, 0.46mg of Pd(OAc) 2 , 1.64mg of phosphine ligand Sphos, 5.00mg of phase transfer catalyst aliquat 336 and 5mL of anhydrous toluene were mixed and stirred, and after the temperature was raised to 95°C, an oxygen-free potassium carbonate aqueous solution (2M, 0.8mL) was added, then stirred at 95°C for 5 hours, and then sequentially Add 15.00 mg of phenylboronic acid for 5 hours and 0.50 mL of bromobenzene for 5 hours. Cool down to 80°C and add 1.00 g of sodium diethyldithiocarbamate, and continue stirring for 24 hours. After the reaction was completed, it was extracted with dichloromethane, washed with water three times, and dried over anhydrous sodium sulfate. After filtration and concentration, the product was settled into 150 mL of methanol. The resulting solid, 12.58 mg (0.33 mmol) of sodium borohydride and 60 mL of dichloromethane were stirred at refl...

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Abstract

The invention relates to a hole-transporting polymer containing benzyl alcohol groups and its application in perovskite solar cells, belonging to the field of perovskite solar cells. The object of the present invention is to provide a polymer hole transport material containing benzyl alcohol groups. The polymer main chain of this material is composed of triarylamine repeating units to ensure that it has a suitable HOMO energy level and hole mobility; the side chain introduces benzyl alcohol groups to improve the hydrophilicity of the polymer, which can realize calcium titanium The complete and uniform coverage of the mineral layer on the surface of its film. In addition, the repeating unit of the polymer is easy to synthesize, and the raw material is cheap, which reduces the development cost of the material. These are conducive to the application of such polymer hole transport materials in high-efficiency and large-area devices, and have good application prospects.

Description

technical field [0001] The invention relates to the field of perovskite solar cells, in particular to a method for preparing a hole-transporting polymer containing benzyl alcohol groups and its application in perovskite solar cells. Background technique [0002] In recent years, people have paid more and more attention to the "energy crisis" and the environmental problems caused by the combustion of fossil fuels. It is imperative to develop renewable and environmentally friendly new energy sources. Among them, solar energy is an "inexhaustible and inexhaustible" clean energy source, which is crucial to the sustainable development of human society. The development of low-cost, high-efficiency new solar cells has become a research hotspot in recent years. Among them, the perovskite solar cell (PSC) has developed rapidly, and the device efficiency has increased from 3.8% in 2009. [1] Improve to 23.7% in 2018 [2] , has become one of the research hotspots in the field of new s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01L51/42H01L51/46
CPCC08G61/122C08G61/12C08G2261/124C08G2261/122C08G2261/1412C08G2261/1422C08G2261/3162C08G2261/3241C08G2261/411C08G2261/512C08G2261/91H10K85/111H10K85/151H10K30/10Y02E10/549H10K30/86H10K85/50
Inventor 李灿郭鑫王旭超杨青
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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