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Photovoltaic device containing pyridine polymer

A technology of photovoltaic devices and polymers, applied in photovoltaic power generation, electric solid-state devices, semiconductor devices, etc., can solve problems such as poor ductility and poor stability, and achieve huge application value and development potential, good self-assembly and stability, Effect of high electron transport performance and light transmission

Active Publication Date: 2019-04-30
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of poor stability and poor ductility of existing electron transport materials, the present invention provides a photovoltaic device containing pyridine polymer, and improves the photoelectric conversion efficiency of the photovoltaic device by improving the performance of the electron transport material

Method used

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  • Photovoltaic device containing pyridine polymer
  • Photovoltaic device containing pyridine polymer
  • Photovoltaic device containing pyridine polymer

Examples

Experimental program
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Effect test

Embodiment 1

[0052] 2-vinylpyridine was passed through a basic alumina column to remove free radical inhibitors, and dicyclohexyl azo was recrystallized from ethanol and dried for later use. 2-Ethylpyridine (30 g, 0.285 mol) was added to a dry reaction flask, 30 mL of DMF was used as a solvent, RAFT reagent (0.16 g, 0.43 mmol) and dicyclohexyl azo (21 mg, 0.086 mmol) were used as initiators. The reaction bottle was refrigerated and evacuated three times for nitrogen exchange (-196°C, 0.01mmHg, the operation method of the freeze evacuation and nitrogen exchange steps in the subsequent examples is the same as this example), to remove oxygen, and then heated in an oil bath under the protection of nitrogen to 75°C for 22 hours. After the reaction, cool to room temperature, precipitate the reactant into cold diethyl ether (0° C.), collect the solid polymer, redissolve, precipitate, filter, and dry to obtain the polymer.

Embodiment 2

[0054] 2-vinylpyridine is passed through a basic alumina column to remove free radical inhibitors, and dicyclohexyl azo is recrystallized from ethanol (the solvent is volatilized after heating and dissolving to obtain a recrystallized and purified initiator), dried and used for later use. 2-Ethylpyridine (30 g, 0.285 mol), 30 mL of DMF, RAFT reagent (0.47 g, 1.29 mmol) and dicyclohexyl azo (63 mg, 0.258 mmol) were added as initiators in a dry reaction flask. The reaction bottle was refrigerated three times and replaced with nitrogen to remove oxygen, then placed in an oil bath and heated to 75°C under the protection of nitrogen, and reacted for 22 hours. After the reaction, cool to room temperature, precipitate the reactant into cold ether, collect the solid polymer, redissolve, precipitate, filter, and dry to obtain the polymer.

Embodiment 3

[0056] 2-Vinylpyridine was passed through a basic alumina column to remove free radical inhibitors and dried for later use. Add 2-ethylpyridine (1.0 g, 0.0095 mol) and 5 mL THF (that is, solvent tetrahydrofuran) into a dry reaction flask. The reaction bottle was refrigerated three times and evacuated for nitrogen to remove oxygen. Then, under the protection of nitrogen, tert-butyllithium (360 μL, 0.16M) was added and reacted for 20 hours. After the reaction, cool to room temperature, precipitate the reactant into cold ether, collect the solid polymer, redissolve, precipitate, filter, and dry to obtain the polymer.

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Abstract

The invention provides a photovoltaic device containing pyridine polymer. The pyridine polymer has a molecular structure as shown in formula (1). The material takes poly(2-vinylpyridine) as the core.The electron transport material has high electronic transmission performance and light transmission, excellent solubility, good self-assembly performance and stability, and good processability in solution. The electron transport material can be used as both the electron transport material of all-organic solar cells and the electron transport material of perovskite solar cells, and has huge application value and development potential in the field of photovoltaic devices such as organic solar cells.

Description

technical field [0001] The invention relates to the field of electron transport materials for photovoltaic devices, in particular to a photovoltaic device containing pyridine polymer. Background technique [0002] As a kind of flexible and printable solar cells, organic solar cells are composed of organic semiconductor materials as the core part of solar cells. They have the advantages of wide source of raw materials, good flexibility, solution processing, and printability. The first organic solar cell was prepared by Kearns and Calvin in 1958. Its main material was magnesium phthalocyanine dye, and the dye layer was sandwiched between two electrodes with different work functions. Through this device, they could observe an open circuit of 200mV voltage, but the photoelectric conversion efficiency is very low. The most widely used solar cell device structure is a "sandwich" structure, which generally includes the following parts: (1) transparent electrode, usually an oxide m...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/42
CPCH10K85/111H10K85/151H10K30/00Y02E10/549
Inventor 肖泽云陆仕荣胡定琴
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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