A preparation method of polyfluorene block conjugated polymer cathode buffer layer

A conjugated polymer and cathode buffer layer technology, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc. to improve the interface barrier, improve the morphology, and improve the efficiency

Active Publication Date: 2019-05-03
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] At present, the cathode buffer layer of organic solar cell devices is random or alternating conjugated polymer electrolytes containing quaternary ammonium salts, crown ethers, etc. The structure of random or alternating conjugated polymer electrolytes is disordered and cannot form a self-assembled structure.
The morphology of the upper active layer is still poor, and the morphology of the upper active layer cannot be improved

Method used

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  • A preparation method of polyfluorene block conjugated polymer cathode buffer layer
  • A preparation method of polyfluorene block conjugated polymer cathode buffer layer
  • A preparation method of polyfluorene block conjugated polymer cathode buffer layer

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] The reaction equation of the present invention is attached figure 2 , the specific reaction steps are as follows:

[0012] Synthetic steps of 2-(2-(2-methoxyethoxy)ethoxy)ethyl-4-methylbenzenesulfonate (compound 1):

[0013] Triethylene glycol monomethyl ether (8.2 g, 50.0 mmol) and 4-methylbenzenesulfonyl chloride (10.5 g, 55.1 mmol) were dissolved in 120 mL THF solution and added to a 250 mL round bottom flask. The reaction system was cooled to 0 °C with an ice bath. 10.0g NaOH was dissolved in 50 mL deionized water and added dropwise to the above reaction solution, gradually raised to room temperature and stirred to react overnight, the reaction solution was washed with sodium bicarbonate to remove unreacted sulfonate, and washed with dichloromethane and water Extraction with MgSO 4 Dry, filter and spin dry. Through the column with ethyl acetate / petrole...

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Abstract

The invention discloses a preparation method of a polyfluorene block conjugated polymer cathode buffer layer. The polyfluorene block conjugated polymer is obtained through Kumada catalyst transfer coupling polymerization. First, ethylene glycol monomethyl ether, 2,7-dibromofluorene, 1,6-dibromohexane and diethylamine are used as raw materials to synthesize monomers, and chlorinated with 1,3-bisdiphenylphosphinopropane Nickel Ni(dppp)Cl2 is used as a catalyst, with dry tetrahydrofuran as a solvent, the monomer and 2,7-dibromo-9,9-bis(2-(2-(2-methoxyethoxy)ethoxy Base) ethyl)-fluorene monomer reaction polymerization. The obtained polymer was settled with n-hexane, extracted with a Soxhlet extractor, passed through a column with neutral alumina, and dried to obtain a light green solid. The block polymer can realize the processing of polar solvents such as water and alcohol, is environmentally friendly, can reduce the work function, and can improve the morphology of the upper active layer. It can be used as a good cathode buffer layer for devices such as solar cells, LEDs and FETs.

Description

technical field [0001] The invention relates to the technical field of organic solar cells, in particular to a method for preparing a cathode buffer layer based on a block polymer electrolyte. Background technique [0002] Environmental pollution is becoming more and more serious, and global energy demand is increasing year by year. The development and utilization of solar energy has become a hot topic in the world. Due to the complex production process, expensive production equipment, limited silicon material, and the conversion efficiency has basically reached the limit, the further development of traditional inorganic material photovoltaic cells is greatly restricted. In recent years, the research and development of conjugated polymers has made it possible to develop low-cost, large-area organic polymer photovoltaic cells. In addition, organic conjugated polymer thin film solar cells can be produced by roll-to-roll printing, which is cheap and efficient. Therefore, many ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/02H01L51/46
CPCC08G61/02C08G2261/126C08G2261/1424C08G2261/143C08G2261/18C08G2261/3142H10K85/151Y02E10/549
Inventor 周丹徐镇田秦元成于婉君李明俊彭玉峰雷旭东
Owner NANCHANG HANGKONG UNIVERSITY
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