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A kind of preparation method of cathode interface layer of thiophene fluorene block conjugated polymer

A technology of conjugated polymer and cathode interface layer, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems that cannot solve the active layer morphology and interface barrier at the same time, and achieve the improvement of photoelectric conversion Efficiency, reduction of interface barrier, and effect of morphology improvement

Active Publication Date: 2019-06-28
JIANGXI LYUTAI TECH
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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the invention provides a preparation method of a thiophene fluorene block conjugated polymer cathode interface layer; the existing cathode interface layer is a random or alternating conjugated polymer electrolyte, fullerene Alkene derivatives and inorganic zinc oxide, etc., these cathode interfacial layers cannot simultaneously solve the problems of active layer morphology and interfacial barrier

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  • A kind of preparation method of cathode interface layer of thiophene fluorene block conjugated polymer
  • A kind of preparation method of cathode interface layer of thiophene fluorene block conjugated polymer
  • A kind of preparation method of cathode interface layer of thiophene fluorene block conjugated polymer

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] The reaction equation of the present invention is attached figure 2 , the specific reaction steps are as follows:

[0018] (1) Synthetic steps of 2,5-dibromo-3-thiophenemethanol (compound 1)

[0019] 3-thiophenemethanol (2.51g, 22mmol) was added into a 100mL round bottom flask, 30mL tetrahydrofuran was added to dissolve 3-thiophenemethanol, and stirred at room temperature for ten minutes. N-bromosuccinimide (7.80 g, 43.8 mmol) was added to the reaction flask in batches, and stirred at room temperature in the dark to react overnight. Spin to dry the solvent, dissolve in ether, wash with 1M sodium hydroxide solution and water successively, and then spin to dry the solvent. Pass through the column with n-hexane and petroleum ether (volume ratio = 3:1) to obtain a light yellow solid with a yield of 80%.

[0020] (2) Synthetic steps of 1-(2,5-dibromothiophen-3-y...

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Abstract

The invention discloses a method for preparing a cathode interface layer of a thiophene fluorene block conjugated polymer. The electrolyte of the thiophene fluorene block conjugated polymer is obtained through Kumada catalyst transfer coupling polymerization. Ni(dppp)Cl with 1,3-bisdiphenylphosphinopropane nickel chloride 2 As a catalyst, the two compounds are polymerized with dry tetrahydrofuran as a solvent to obtain the target neutral block conjugated polymer PT EO - b ‑PF6N. The polymer was settled with n-hexane, dialyzed with a dialysis bag, passed through a column with neutral alumina, and dried to obtain an orange solid. Since the side chains contain polar tertiary amines and alkoxy groups, endowing the thiophene fluorene block conjugated polymer can not only realize the processing of environmentally friendly polar solvents such as water and alcohol, reduce the interface work function of the cathode electrode, and further reduce the active layer and cathode The interfacial barrier between them can improve the morphology of the upper active layer. It can be used as a good cathode interface layer of devices such as OPV, LED and FET.

Description

technical field [0001] The invention relates to the technical field of cathode interface of organic solar cells, in particular to a preparation method of a cathode interface layer of a thiophene fluorene block conjugated polymer. Background technique [0002] Global environmental pollution and energy crisis are becoming more and more serious, and there is an urgent need to develop new renewable energy sources. Compared with other renewable energy sources, solar energy has the advantages of abundant resources, cleanliness, and limited geographical location. Due to the complex production process, expensive production equipment, limited silicon materials, and the conversion efficiency has basically reached the limit of the traditional inorganic silicon battery, its further large-scale commercialization is greatly restricted. On the contrary, the research and development of organic polymer solar cells has made it possible to develop low-cost, large-area organic polymer photovolt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01L51/46
CPCC08G61/126C08G2261/91C08G2261/79C08G2261/3223C08G2261/18C08G2261/3142C08G2261/122C08G2261/126C08G2261/1424C08G2261/143H10K85/113Y02E10/549
Inventor 周丹徐镇田秦元成李明俊于婉君余棋方行忠
Owner JIANGXI LYUTAI TECH
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