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Non-fullerene electron acceptor material and organic photovoltaic cell

An electron acceptor material, non-fullerene technology, applied in photovoltaic power generation, organic chemistry, electric solid-state devices, etc., can solve problems such as red shift of absorption range, toxicity of raw materials and pollution of production methods

Inactive Publication Date: 2021-06-18
WAYS TECHN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second-generation solar cells are thin-film cadmium telluride (CdTe) solar cells, whose raw material toxicity and manufacturing method have great pollution to the environment
However, there is still room for a red shift in the absorption range of the non-fullerene electron acceptor materials in the aforementioned patents

Method used

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  • Non-fullerene electron acceptor material and organic photovoltaic cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0077] Preparation of non-fullerene electron acceptor materials

Embodiment 1

[0078] The preparation process of the non-fullerene electron acceptor materials in Examples 1 and 2 is shown in the following reaction formula I (Example 1) and reaction formula II (Example 2).

[0079] [Reaction Formula I]

[0080]

[0081] [Reaction II]

[0082]

[0083] Compound 1

[0084]

[0085] The preparation method of compound 1:

[0086] 4,7-dibromo-benzothiadiazole (20 g, 68.034 mmol) was dissolved in ethanol (EtOH) (200 mL), and sodium borohydride (NaBH 4 ) (10.3 g, 272.14 mmol) and heated to reflux for 4 hours. Cool after the reaction, and extract with dichloromethane, water, and alkaline water. The organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated to dryness with a cyclone concentrator to obtain compound 1 (12.5 g, yield: 69%) as a light yellow solid.

[0087] Compound 2

[0088]

[0089] The preparation method of compound 2:

[0090] Compound 1 (2g, 7.52mmol) was dissolved in ethanol (20mL) and charged into a...

Embodiment 2

[0116]

[0117] The preparation method of embodiment 2:

[0118] Add compound 8 (0.3g, 0.28mmol) and 2F-IC (compound 10) (0.32g, 1.40mmol) into a 100mL round bottom bottle, then add 30mL of chloroform to dissolve, slowly drop into 1mL of pyridine, and heat to reflux under nitrogen protection for 2 Hours, after the reaction was completed, it was cooled, concentrated and sucked to dryness with a cyclone concentrator. Then, the solid was precipitated with methanol, and then purified by silica gel column chromatography (petroleum ether / chloroform). After vacuum drying, a dark blue solid was obtained which was Example 2 (0.3 g, yield: 73%).

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Abstract

The invention relates to a non-fullerene electron acceptor material as shown in a formula (I) and an organic photovoltaic cell with an active layer comprising the non-fullerene electron acceptor material. The absorption spectrum range of the non-fullerene electron acceptor material can be effectively extended to a near-infrared light region, so that more sunlight photons in the near-infrared light region can be effectively captured.

Description

technical field [0001] The present invention relates to a non-fullerene electron acceptor material and an organic photovoltaic cell whose active layer includes the aforementioned non-fullerene electron acceptor material, in particular to a benzoselenide having a strong electronic structure A non-fullerene electron acceptor material of azole (benzoselenadiazole) derivatives and an organic photovoltaic cell in which an active layer includes the aforementioned non-fullerene electron acceptor material. Background technique [0002] With the evolution of the times, the consumption of energy such as coal, oil, natural gas and nuclear energy is increasing day by day, and the energy crisis is gradually emerging. Solar power generation is an environmentally friendly power generation method that is renewable and can reduce environmental pollution. The first generation of solar cells is mostly silicon solar cells, which have a high photoelectric conversion rate. The second-generation...

Claims

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Application Information

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IPC IPC(8): C07D517/22C08G61/12H01L51/46H01L51/42
CPCC07D517/22C08G61/124C08G61/126C08G2261/124C08G2261/1412C08G2261/143C08G2261/3241C08G2261/3243C08G2261/414C08G2261/512C08G2261/91H10K85/151H10K85/626H10K85/657H10K30/20Y02E10/549
Inventor 黄懿萱张纯凤何嘉兴施宏旻柯崇文
Owner WAYS TECHN CORP
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