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A carboxyl-containing organic photoelectric material and its preparation method and application

An organic photoelectric material, carboxyl technology, applied in the direction of photovoltaic power generation, circuits, electrical components, etc., can solve the problems of uneven conduction, uneven microscopic conduction of thin films, and reduced charge mobility, so as to improve charge mobility, reduce content, Improve the effect of hydrogen bonding interactions

Active Publication Date: 2020-05-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the introduction of a large number of alkyl chains will lead to a higher mass ratio of alkyl groups per unit mass of conductive polymer. These alkyl groups themselves are insulating components, which will occur in the active layer film of an imperfect crystalline organic photovoltaic device. It leads to a decrease in the charge mobility of the material, causing the microscopic conductive inhomogeneity of the film, similar to the conductive inhomogeneity of PEDOT:PSS reported in the previous literature (Advanced Energy Materials 2017, 7(6), 1601499)

Method used

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  • A carboxyl-containing organic photoelectric material and its preparation method and application
  • A carboxyl-containing organic photoelectric material and its preparation method and application
  • A carboxyl-containing organic photoelectric material and its preparation method and application

Examples

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Embodiment 1

[0027] Dissolve PTB7 (20 mg) (Shenzhen Ruixun Photoelectric Material Technology Co., Ltd.) in 6 mL of toluene and 3 mL of 1,4-dioxane mixed solvent, slowly add 1 mL of saturated sodium hydroxide aqueous solution dropwise under stirring, and at 100 ° C After reacting for 5 h, the reaction solution was cooled to room temperature, and the reaction product was precipitated in dilute hydrochloric acid solution, and filtered to obtain black solid particles (15 mg).

[0028] (PTB7, where R 3 and R 4 For branched chain octyl);

[0029] The solution (chlorobenzene solution) ultraviolet absorption spectrum of the product obtained in this embodiment and the thin film (the chlorobenzene solution of the sample is prepared by spin-coating and spinning film on quartz glass, and the rotating speed is 1000 rpm) ultraviolet absorption spectrum is respectively as follows figure 1 and figure 2 shown. Depend on figure 1 and figure 2 The results showed that under the action of alkali and ...

Embodiment 2

[0033] Dissolve PTB7-Th (50mg) (Shenzhen Ruixun Photoelectric Material Technology Co., Ltd.) in 12mL of toluene and 6mL of 1,4-dioxane mixed solvent, slowly add 3mL of saturated aqueous potassium hydroxide solution dropwise under stirring, at 90°C The reaction was carried out at high temperature for 10 h. After the reaction solution was cooled to room temperature, the reaction product was precipitated in dilute hydrochloric acid solution and filtered to obtain black solid particles (40 mg).

[0034] (PTB7-Th, where R 1 and R 2 For branched chain octyl);

[0035] The solution (chlorobenzene solution) ultraviolet absorption spectrum of the product obtained in this embodiment and the thin film (the chlorobenzene solution of the sample is prepared by spin-coating and spinning film on quartz glass, and the rotating speed is 1000 rpm) ultraviolet absorption spectrum is respectively as follows image 3 and Figure 4 shown. Depend on image 3 and Figure 4 The results showed t...

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Abstract

The invention belongs to the technical field of organic photoelectric materials, and discloses a carboxyl-containing organic photoelectric material, a preparation method and an application thereof. The present invention selectively removes the ester group alkyl group in the organic polymer optoelectronic material, retains a part of the alkyl group, and the obtained polymer material has both carboxylic acid group and lipophilic alkyl group, which is beneficial to improve the hydrogen bond interaction between molecules. Function, reduce the content of insulating alkyl in the material, improve the charge mobility of the material, and improve the performance of the device.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric materials, and in particular relates to a carboxyl-containing organic photoelectric material and its preparation method and application. Background technique [0002] Due to the advantages of light weight and flexible fabrication, organic optoelectronic devices have attracted extensive attention from researchers. Among them, organic conjugated small molecules and polymer optoelectronic materials usually include organic electroluminescent active materials, organic solar cell donor / acceptor materials, organic dye-sensitized cell materials, hole / electron charge transport materials, etc. Among many organic optoelectronic devices, the research on organic polymer solar cells is one of the current hotspots. Among them, the photovoltaic active layer adopts solid organic / polymer semiconductor materials, and its unique advantages include: (1) organic materials are light in weight and have goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01L51/54H01L51/46
CPCC08G61/126C08G2261/124C08G2261/1426C08G2261/146C08G2261/1412C08G2261/3243C08G2261/91C08G2261/95H10K85/113Y02E10/549
Inventor 李远武颖
Owner SOUTH CHINA UNIV OF TECH
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