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Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof

A technology for solar cells and acceptor materials, applied in the field of organic solar cell materials, can solve problems such as unfavorable commercial application, difficult preparation process, complex substructure, etc., achieve good visible light absorption range and absorption intensity, and synthetic raw materials are cheap and easy to obtain. , the effect of simple molecular structure

Inactive Publication Date: 2018-06-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of fullerene acceptors such as weak light absorption in the visible region, small molecular energy level modulation range, and high synthesis and purification costs, people are gradually turning their attention to non-fullerene-based polymer solar cells.
Since 2015, Zhan Xiaowei's research group of the Key Laboratory of Organic Solid State Institute of Chemistry, Chinese Academy of Sciences designed and synthesized non-fullerene acceptor materials represented by ITIC, the efficiency of organic solar cells based on non-fullerene acceptors has exceeded 13%. , but at present, all the above-mentioned materials have complex molecular structure, high molecular weight, difficult preparation process and expensive synthetic raw materials, which are not conducive to commercial application

Method used

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  • Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof
  • Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof
  • Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A fluorene-based organic solar cell acceptor material S-1, the chemical structural formula of which is:

[0048]

[0049] The above-mentioned fluorene organic solar cell acceptor material S-1, the preparation method is as follows (the preparation route is as follows: figure 1 shown):

[0050] (1) Synthesis of Compound 1: Get a 250ml double-necked round-bottomed flask, treat it anhydrous and oxygen-free, add 2,7-dibromofluorene (15mmol) successively, tetrabutylammonium iodide (30wt%, 4.5mmol), pump Inflate nitrogen 3 times, inject 50ml DMSO and 30ml 50wt% NaOH solution under nitrogen protection, heat to 100°C, react overnight, TLC monitoring; post-treatment: stop the reaction, cool to room temperature, transfer to a 500ml separatory funnel, 100ml 10% (volume concentration) washed with dilute hydrochloric acid (slowly added, careful exotherm), extracted with petroleum ether, washed the organic phase with saturated brine 50ml*3, dried and concentrated the organic phase...

Embodiment 2

[0056] A fluorene-based organic solar cell acceptor material S-2, the chemical structural formula of which is:

[0057]

[0058] The above-mentioned fluorene organic solar cell acceptor material S-2, the preparation method is as follows (the preparation route is as follows: figure 2 shown):

[0059] (1) The synthesis of compound 1 and compound 2 is the same as in Example 1;

[0060] (2) Synthesis of Compound 5: Take a 250ml double-necked flask, treat it with anhydrous and anaerobic treatment, add Compound 1 (16mmol) and 100ml of anhydrous THF, stir at -78°C for 15min, add n-BuLi (2.5eq, 16ml, 40mmol), stirring reaction; after reacting for 1.5h, add isopropanol borate (4eq, 64mmol), turn off the refrigeration, react overnight, TLC monitoring; aftertreatment: stop reaction after 9h, add water to quench, dichloromethane extraction, Drying and concentration, silica gel column chromatography, petroleum ether / ethyl acetate=20 / 1 as eluent, obtained pure white solid product Comp...

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Abstract

The invention belongs to the technical field of organic solar battery materials and in particular relates to a novel fluorine organic solar battery acceptor material as well as a preparation method and application thereof. Aiming at the defects that a conventional non-fullerene micromolecule acceptor material is complex in molecule structure, relatively large in molecular weight, hard in preparation process, expensive in synthesis raw material, not beneficial to commercial application, and the like, the invention provides the novel fluorine organic solar battery acceptor material, a fluorine organic solar battery acceptor material S-1 and a fluorine organic solar battery acceptor material S-2 are of simple linear structures, are simple in molecular structure, small in molecular weight, small and simple in preparation step, cheap and easy in synthesis raw material obtaining, wide in visible light absorption range and high in absorption strength; when the fluorine organic solar battery acceptor materials are applied to an organic solar battery photovoltaic device, the manufacturing cost of the device is greatly reduced on the basis that a wide absorption range and high absorption strength of the device are ensured, and soon commercial application of an organic solar battery can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of organic solar cell materials, and in particular relates to a novel fluorene organic solar cell acceptor material and its preparation method and application. Background technique [0002] Organic Photovoltaics (OPV for short) is a new type of photovoltaic device developed in the 1980s based on organic semiconductor light-absorbing materials to achieve photoelectric conversion effects. Studies have shown that compared with traditional inorganic silicon solar cells, OPV has the advantages of adjustable molecular structure, low price, light weight and portability, and can use roll-to-roll and spray printing technology to realize fast and large-area processing of flexible devices, which has attracted widespread attention. And gradually move towards industrialization. [0003] The active layer of polymer solar cells is usually composed of polymer / organic small molecule-based electron donor and electron accepto...

Claims

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Application Information

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IPC IPC(8): C07D333/24H01L51/46
CPCC07D333/24H10K85/626H10K85/655Y02E10/549Y02P70/50
Inventor 肖生强陈浩琪杨明焱詹春尤为
Owner WUHAN UNIV OF TECH
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