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A kind of preparation method of n-type perylene diimide cof dendritic conjugated polymer cathode interface layer

A conjugated polymer, perylene diimide technology, applied in the field of n-type perylene diimide COF dendritic conjugated polymer cathode interface layer and its preparation, can solve the problem of reducing the interface barrier between the active layer and the cathode , can not take into account the active layer morphology, electron mobility interface barrier and other issues, to achieve excellent charge transport performance, good solubility, and improve the effect of stability

Active Publication Date: 2022-06-07
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

However, the existing cathode interface layer can only regulate the interface work function and reduce the interface barrier between the active layer and the cathode, and cannot solve the three problems of active layer morphology, electron mobility and interface barrier.

Method used

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  • A kind of preparation method of n-type perylene diimide cof dendritic conjugated polymer cathode interface layer
  • A kind of preparation method of n-type perylene diimide cof dendritic conjugated polymer cathode interface layer
  • A kind of preparation method of n-type perylene diimide cof dendritic conjugated polymer cathode interface layer

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Embodiment Construction

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] The reaction equation of the present invention is as attached image 3 , the specific reaction steps are as follows: a kind of synthesis steps of n-type perylene diimide COF dendritic conjugated polymer cathode interface layer PTPAPDISi:

[0038] Step 1: Synthesis of conjugated polymer PDIBr;

[0039] (1) 1.65 g, 3 mmol of 1,7-dibromo-3,4,9,10-perylenetetracarboxydianhydride was added to 10 mL of anhydrous acetic acid, and the mixture was stirred at room temperature for 30 minutes. Next, 0.81 g, 8.2 mmol of compound 5-hexen-1-amine was added dropwise and stirred well;

[0040] (2) The reaction solution was then heated to 100° C. for reflux reaction for 24 hours.

[0041] (3) After the reaction, the reaction solution was cooled to room temperature and poured into 400 mL of prepared deionized water. The mixture was filtered to obtain a precipitate; 500 mL of met...

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Abstract

The invention discloses a preparation method of an n-type perylene diimide COF dendritic conjugated polymer cathode interface layer. 1,7-dibromo-3,4,9,10-perylene tetracarboxylic dianhydride is respectively After substitution and hydrosilylation reaction, the target product was synthesized by Suzuki coupling reaction with tris(4-boronic acid pinesol ester phenyl)amine. First of all, the COF-like two-dimensional dendritic conjugated polymer with siloxane introduced into the side chain makes the material have the unique charge transport properties of COF materials and has good solubility properties; secondly, the lone pair on the nitrogen atom in triphenylamine The transfer of electrons to the perylene diimide can form a favorable n-type self-doping effect and improve the conductivity of the material; finally, the use of side chain siloxanes induces assembly and strong interfacial interaction between the dendrimer and the underlying substrate The self-assembly into an ordered arrangement optimizes the morphology of the active layer and increases the carrier mobility, thereby improving the short-circuit current and fill factor of the device.

Description

technical field [0001] The invention relates to the technical field of cathode interface layers of organic solar cells, in particular to an n-type perylene diimide-based COF dendritic conjugated polymer cathode interface layer and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, energy consumption is increasing. In order to meet people's daily and social development demand for energy, it is not enough to rely solely on fossil energy, and it is urgent to develop new energy sources. Common new energy sources include wind energy, hydro energy, tidal energy, and solar energy. Solar cells are common and effective devices for converting solar energy into electrical energy. Although silicon solar cells, which are widely used at present, have stable and efficient power conversion efficiency (PCE), they are limited by their complex preparation process, easy environmental pollution, and high cost. The development of sili...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/42H01L51/44
CPCC08G61/12C08G2261/12C08G2261/131C08G2261/144C08G2261/18C08G2261/3162C08G2261/411C08G2261/91H10K30/00H10K30/81Y02E10/549
Inventor 周丹张和惠徐镇田徐海涛谢宇李明俊
Owner NANCHANG HANGKONG UNIVERSITY
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