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Non-fullerene solar energy cell acceptor material based on multiple condensed rings, preparation method and application thereof

A technology for solar cells and acceptor materials, applied in the field of non-fullerene solar cell acceptor materials and their preparation, can solve problems such as insufficient and effective use of sunlight, weak absorption in the visible region, and difficulty in energy level regulation. Achieve the effect of improving photoelectric conversion efficiency, increasing charge mobility, and easy energy level

Active Publication Date: 2017-03-01
SUZHOU JOYSUN ADVANCED MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved: Aiming at the disadvantages of low light absorption efficiency of the acceptor material in the existing solar cell, inability to fully and effectively utilize sunlight, high price, weak absorption in the visible region, difficulty in energy level regulation, and easy diffusion and aggregation, the present invention Provide a non-fullerene solar cell acceptor material based on multi-fused rings and its preparation method and application, the acceptor material reduces its recombination energy and improves charge mobility while increasing the effective conjugation length

Method used

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  • Non-fullerene solar energy cell acceptor material based on multiple condensed rings, preparation method and application thereof
  • Non-fullerene solar energy cell acceptor material based on multiple condensed rings, preparation method and application thereof
  • Non-fullerene solar energy cell acceptor material based on multiple condensed rings, preparation method and application thereof

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Embodiment 1

[0030] when X is Y is A is , the preparation steps of the acceptor material BT-IC are as follows:

[0031] (1) Synthesis of Compound 1: In a 150mL round-bottomed flask, add 2mol of p-hexylbromobenzene and 100mL of tetrahydrofuran under the protection of argon, cool the mixed solution to -78°C, and then add 2mol of n-butyllithium dropwise to it , after the dropwise addition, stirred at -78°C for 60min, then 0.3mol 2,2'-(4,8-bis(alkoxy)benzo[1,2-b:4,5-b'] Dithiophene-2,6-)bis(thiophene-3-ethyl carboxylate) was dissolved in 100mL tetrahydrofuran and added dropwise to the above-mentioned round bottom flask. Extract with dichloromethane, wash with water, dry with anhydrous sodium sulfate, spin dry the solvent, then dissolve in 200mL of acetic acid solution, reflux for 30min, then add 1mL of concentrated sulfuric acid dropwise, reflux for 12h, then cool to room temperature, pour into ice In water, a yellow solid was obtained by suction filtration, extracted with dichlorometha...

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Abstract

The invention provides a non-fullerene solar energy cell acceptor material based on multiple condensed rings, a preparation method and an application thereof. A chemical structural formula of the acceptor material is shown in a specification, wherein X is selected from one of the following groups: Y is selected from one of the following groups: A is an acceptor unit having a pi-conjugated structure, and is respectively selected from the following groups. According to the non-fullerene solar energy cell acceptor material, the effective conjugation length is increased, at the same time, recombination performance is reduced, charge mobility is increased, good visible light near infrared area luminous absorption is guaranteed, electron mobility of the material is obviously increased, and the photoelectric conversion efficiency of an organic solar energy cell is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, and in particular relates to a multi-condensed ring-based non-fullerene solar cell acceptor material and a preparation method and application thereof. Background technique [0002] Organic Photovoltaics (OPVs for short), also known as plastic solar cells, is a battery type that uses organic conductive polymers to collect solar energy. In 1995, Heeger and Friend first proposed the polymer organic heterojunction solar cell, which effectively increased the contact area between the donor and the acceptor, and improved the charge separation efficiency. A solid foundation has been laid for development. Since the publication of this research result, this field has rapidly become a hot spot in the world's research scope. After nearly 20 years of development, many breakthroughs have been made. At present, the highest photoelectric conversion efficiency of single-layer heterojunction OPVs ca...

Claims

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Application Information

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IPC IPC(8): C07D495/22H01L51/46
CPCC07D495/22H10K85/626H10K85/6576Y02E10/549
Inventor 廖良生李永玺林久栋
Owner SUZHOU JOYSUN ADVANCED MATERIALS CO LTD
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