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Conjugated polymer for photovoltaic device, and preparation method and application of conjugated polymer

A conjugated polymer, optoelectronic device technology, applied in the fields of electric solid device, semiconductor/solid state device manufacturing, photovoltaic power generation, etc., can solve the problem that the absorption spectrum cannot be well matched with the solar spectrum, the energy transfer efficiency is low, and the energy conversion efficiency Low problems, to achieve the effect of improving photoelectric conversion efficiency, improving charge transport properties and stability, and simple structure

Inactive Publication Date: 2016-03-02
宁波优而雅电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although people have invested a lot of research on organic solar cells and achieved rapid development, the efficiency of organic solar cells has been greatly improved, but the energy conversion efficiency of organic solar cells is still lower than that of silicon solar cells. One of the reasons is that The carrier mobility of polymers is several orders of magnitude lower than that of inorganic single crystal materials
The spectral response of the currently used conjugated polymer photovoltaic materials is relatively poor, and its absorption spectrum cannot match the solar spectrum well, which is another important reason for the low energy transfer efficiency.

Method used

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  • Conjugated polymer for photovoltaic device, and preparation method and application of conjugated polymer
  • Conjugated polymer for photovoltaic device, and preparation method and application of conjugated polymer
  • Conjugated polymer for photovoltaic device, and preparation method and application of conjugated polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment discloses a conjugated polymer P1 with the following structural formula:

[0048]

[0049] Among them, n=25, R 1 for C 16 h 33 , R 2 for C 10 h 21 .

[0050] The preparation process of conjugated polymer P1 is as follows:

[0051] One, have the preparation of the compound A of following structural formula:

[0052]

[0053] The preparation method of compound A comprises the steps:

[0054] 1. Under nitrogen protection, dissolve 1.32g (2.0mmol) of 2-dimethoxyphosphono-4,5-bis(hexadecyl)-1,3-dithiol (C) in 60mL of anhydrous tetrahydrofuran The solution was cooled to -78°C, and 2.0mL of 1.5M LDA (3.0mmol) cyclohexane solution was slowly added. After the addition was completed, the reaction was stirred at -78°C for 3h, and then 0.22g (1.0mmol) of benzo [1,2-b:4,5-b']dithiophene-4,8-dione (D) in 10mL anhydrous tetrahydrofuran solution for Wittig-Horner reaction, heat preservation reaction for 0.5h, return to room temperature, continue reaction fo...

Embodiment 2

[0079] This embodiment discloses a conjugated polymer P2 with the following structural formula:

[0080]

[0081] Among them, n=15, R 1 for H, R 2 for C 10 h 21 .

[0082] The preparation process of conjugated polymer P2 is as follows:

[0083] One, have the preparation of the compound A of following structural formula:

[0084]

[0085] The preparation method of compound A comprises the steps:

[0086] 1. Under the protection of nitrogen, cool the solution of 0.42g (2.0mmol) 2-dimethoxyphosphono-1,3-dithiol (C) in 40mL anhydrous tetrahydrofuran to -78℃, and slowly add 2.0mL concentration It is a solution of 1.5MLDA (3.0mmol) in cyclohexane. After the addition is complete, stir and react at -78°C for 3h, then add 0.22g (1.0mmol) of benzo[1,2-b:4,5-b'] 10 mL of anhydrous tetrahydrofuran solution of dithiophene-4,8-dione (D) was subjected to Wittig-Horner reaction, kept for 0.5 h, then returned to room temperature, continued for 12 h, and stopped the reaction. The ...

Embodiment 3

[0095] An organic solar cell device, using glass as a substrate, indium tin oxide (ITO) as a conductive layer, and using the conjugated polymer P1 in Example 1 as a conjugated polymer.

[0096] The structure of the organic solar battery device is: glass / ITO / PEDOT:PSS / active layer / Al, wherein ITO is indium tin oxide with a sheet resistance of 10Ω / □˜20Ω / □. PEDOT is poly(3,4-ethylenedioxythiophene), and PSS is poly(styrenesulfonic acid). The material of the active layer is a mixture, including the electron donor material based on the conjugated polymer P1 and the [6,6]phenyl-C 61 -Butyric acid methyl ester ([6,6]-phenyl-C61-butyric acid methylester, PCBM) is an electron acceptor material made of material.

[0097] The fabrication process of the organic solar cell device is as follows:

[0098] After the ITO glass is ultrasonically cleaned, it is treated with oxygen-Plasma, and a PEDOT:PSS layer is coated on the ITO, where the colon ":" indicates mixing.

[0099] On the PEDOT:P...

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Abstract

The invention discloses a conjugated polymer for a photovoltaic device and a preparation method for the conjugated polymer. The structural formula of the conjugated polymer is as shown in the description, wherein n is a natural number from 10 to 100; R1 is H, or an alkyl group of C1-C20, and R2 is an alkyl group of C1-C10. The conjugated polymer can be applied to organic solar cell devices, organic electroluminescent devices, organic optical storage or the like.

Description

technical field [0001] The invention relates to the field of optoelectronic device materials, in particular to a preparation method and application of a conjugated polymer with optoelectronic function. Background technique [0002] Organic solar cells have attracted widespread attention as a potential renewable energy source due to their incomparable advantages over inorganic solar cells, such as low cost, simple manufacturing process, light weight, and large-area flexible preparation. The performance of organic solar cells has steadily improved over the past decade, with energy conversion efficiencies approaching 10%. [0003] Although people have invested a lot of research on organic solar cells and achieved rapid development, the efficiency of organic solar cells has been greatly improved, but the energy conversion efficiency of organic solar cells is still lower than that of silicon solar cells. One of the reasons is that The carrier mobility of polymers is several orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/54
CPCC08G61/124C08G61/126C08G2261/3243C08G2261/414C08G2261/3246C08G2261/5222C08G2261/51C08G2261/91H10K85/113Y02E10/549
Inventor 戚国锋
Owner 宁波优而雅电器有限公司
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