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Preparation method and application of cathode interface layer of organic optoelectronic device based on conjugated polyelectrolyte

A technology of conjugated polyelectrolyte and cathode interface layer, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of low efficiency of organic solar cell devices, unsuitable cathode interface layer, etc., to promote self- The assembly process, the experimental conditions are easy to control, and the effect of the number of layers is controllable

Active Publication Date: 2017-10-20
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of organic solar cell devices based on this sulfonate self-assembled cathode interface layer is low, mainly because the sulfonate group in polystyrene sodium sulfonate has a strong P-type doping ability for the photoactive layer, Not suitable for use as a cathode interface layer (Fou, A.C.; Onitsuka, O.; Ferreira, M. et al; J.Appl. Phys. 1996, 79, 7501; Onitsuka, O.; Fou, A.C.; Ferreira, M.et al. al; J. Appl. Phys. 1996, 80, 4067)

Method used

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  • Preparation method and application of cathode interface layer of organic optoelectronic device based on conjugated polyelectrolyte
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  • Preparation method and application of cathode interface layer of organic optoelectronic device based on conjugated polyelectrolyte

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Embodiment 1

[0037] The preparation process of the cathode interface layer of the organic photoelectric device based on the conjugated polyelectrolyte in this embodiment is as follows:

[0038] Synthesis of cationic conjugated polyelectrolyte PFNBr: 0.5 mmol 2,7-dibromo-9,9-bis(3'-(N,N-dimethylamino)propyl)fluorene, 0.5 mmol 2,7-bis(4, 4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene, 10mg catalyst Pd(PPh 3 ) 4 , three drops of methyl trioctyl ammonium chloride was added to 3mL of toluene and 2mL of 2mol / L Na 2 CO 3 in the mixed solution. The mixture was refluxed for 3 days under the protection of argon. After the reaction dropped to room temperature, the reaction liquid was settled with 200 mL of methanol, and the obtained precipitate was filtered with acetone for 24 hours to remove the monomer and the catalyst. Then 100 mg of the product was dissolved in 40 mL of tetrahydrofuran, 2 g of bromoethane and 10 mL of DMSO were added, and the reaction was carried out at 50° C...

Embodiment 2

[0051] The preparation process of the cathode interface layer of the organic photoelectric device based on the conjugated polyelectrolyte in this embodiment is as follows:

[0052] Synthesis of cationic conjugated polyelectrolyte PFNI: 0.5 mmol 2,7-dibromo-9,9-bis(3'-(N,N-dimethylamino)propyl)fluorene, 0.5 mmol 2,7-bis(4, 4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene, 10mg catalyst Pd(PPh 3 ) 4 , three drops of methyl trioctyl ammonium chloride was added to 3mL toluene and 2Ml 2mol / L Na 2 CO 3 in the mixed solution. The mixture was refluxed for 3 days under the protection of argon. After the reaction dropped to room temperature, the reaction liquid was settled with 200 mL of methanol, and the obtained precipitate was filtered with acetone for 24 hours to remove the monomer and the catalyst. Then 100 mg of the product was dissolved in 40 mL of tetrahydrofuran, 2.6 g of iodomethane and 10 mL of DMSO were added, and the reaction was carried out at 50° C. for...

Embodiment 3

[0063] The preparation process of the cathode interface layer of the organic photoelectric device based on the conjugated polyelectrolyte in this embodiment is as follows:

[0064] Synthesis of cationic conjugated polyelectrolyte PCNBr: 0.5mmol 9-(N,N-dimethyl-3'-amino-propyl)-2,7-dibromocarbazole, 0.5mmol 2,7-bis(4,4 ,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-N-9-heptadecylcarbazole, 12mg catalyst Pd(PPh 3 ) 4 , three drops of methyl trioctylammonium chloride were added to 10mL of toluene and 2mL of 2mol / L K 2 CO 3 in the mixed solution. The mixture was refluxed for 24 hours under the protection of argon. After the reaction dropped to room temperature, the reaction solution was settled with 250 mL of methanol, and the obtained precipitate was filtered with toluene solvent and then settled with methanol, washed with acetone and dried. 100 mg of the product was dissolved in 40 mL of tetrahydrofuran, 2 g of bromoethane and 10 mL of DMSO were added, and the reaction was carri...

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Abstract

The invention discloses a preparation method of a cathode interface layer of an organic photoelectric device based on a conjugated polyelectrolyte, which comprises the following steps: (1) preparing anion conjugated polyelectrolyte and cationic conjugated polyelectrolyte solutions; Perform surface treatment to obtain a charged substrate; (3) immerse the charged substrate in a conjugated polyelectrolyte solution opposite to the charged charge, absorb a layer of conjugated polyelectrolyte on the charged substrate, wash and dry; (4) Soak the charged substrate in a conjugated polyelectrolyte solution that is electrically opposite to the polyelectrolyte solution described in step (3), absorb a layer of polyelectrolyte on the charged substrate, wash and dry; (5) repeat steps (3)~( 4), obtaining the cathode interface layer of the organic photoelectric device. The invention also discloses the application of the cathode interface layer of the organic photoelectric device. The preparation method of the invention is simple to operate, and the experimental conditions are easy to control, and the obtained cathode interface layer has efficient cathode interface modification ability.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a method for preparing a cathode interface layer of an organic photoelectric device based on a conjugated polyelectrolyte. Background technique [0002] With the continuous development and progress of human society, the depletion of traditional fossil energy has increasingly become a hidden worry for countries all over the world. The development of renewable energy and clean energy; at the same time, the efficient use of existing energy has become a key research topic for various countries. In terms of new energy development, solar energy has become a hotspot of widespread concern due to its large reserves, wide distribution, and easy acquisition. Photovoltaic cells that convert solar energy into electrical energy have also become a technology that effectively utilizes solar energy. At present, photovoltaic cells that are relatively mature in research and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/56
CPCH10K71/00Y02E10/549Y02P70/50
Inventor 黄飞张凯曹镛
Owner SOUTH CHINA UNIV OF TECH
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