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D-A type chlorinated conjugated polymer as well as preparation method and application thereof

A conjugated polymer, D-A technology, applied in the field of solar cells, can solve problems such as cost and environmental pollution restrictions and popularization, and achieve the effects of low energy band gap, enhanced spectral absorption, and broadened spectral absorption.

Pending Publication Date: 2020-09-04
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its unfavorable factors such as high cost and serious environmental pollution limit its popularization.

Method used

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  • D-A type chlorinated conjugated polymer as well as preparation method and application thereof
  • D-A type chlorinated conjugated polymer as well as preparation method and application thereof
  • D-A type chlorinated conjugated polymer as well as preparation method and application thereof

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preparation example Construction

[0032] The preparation method of the solar cell device is not particularly limited, and the technical solution for the preparation of solar cells well known to those skilled in the art can be adopted. In the embodiment of the present invention, the preparation method of the solar cell device preferably includes the following steps:

[0033] S1: First, the glass with ITO sputtered on the surface is cleaned and treated with ultraviolet and ozone in order to obtain a clean ITO glass layer;

[0034] S2: Spin-coat ZnO and D-A conjugated polymer / PC sequentially on the ITO glass layer treated in step S1 71 BM, and then sequentially vapor-deposit MoO3 and Ag electrodes, and sequentially form ZnO electron transport layer, D-A conjugated polymer / PC on the ITO glass layer 71 BM active layer, MoO 3 The hole transport layer and the Ag electrode layer are prepared to obtain a solar cell device.

Embodiment 1

[0035] The compound of the structure shown in the formula II described in Example 1 is prepared by the following method:

[0036] Synthesis of S1, 4,7-dibromobenzo[c][1,2,5]thiadiazole: Add benzo[c][1,2,5]thiadiazole (3.12g, 22.8mmol) into a dry three-necked round-bottomed flask, then add hydrobromic acid (HBr) (60mL) to dissolve, and slowly add 46% liquid bromine (Br 2 ) (2.94mL, 57mmol), add Br 2 Afterwards, the reaction system was heated to 127° C. and refluxed for 12 hours. After the reaction was completed, it was cooled to room temperature, and then sodium bisulfite (NaHCO 3 ) aqueous solution to remove excess bromine, and use chloroform (CHCl 3 ) extraction, the organic layer was collected, and the organic layer was distilled under reduced pressure to obtain the crude product, and then the crude product was purified by silica gel column chromatography, and the mobile phase was dichloromethane to obtain 2.45g of the target product;

[0037] S2, 4,7-bis(4-hexylthiophen-...

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Abstract

The invention provides a D-A type chlorinated conjugated polymer as well as a preparation method and application thereof. The chlorinated conjugated polymer molecule is prepared by the following steps: firstly carrying out a light-shielding reaction on thiophene units contained in different repeating units, an electron-donating monomer, an electron-withdrawing monomer and a catalyst in an organicsolvent system under the protection of an inert gas, and finally purifying by adopting column chromatography, thereby obtaining a target product. The D-A type chlorinated conjugated polymer has good electron transmission capability and good absorption in a visible light range, is applied to a donor material in an organic solar cell, and has good photovoltaic performance.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a D-A type chlorinated conjugated polymer and its preparation method and application. Background technique [0002] So far, energy has always been an indispensable driving force for human development and progress, and the development and utilization of energy is also a long-term topic. With the development of economy and social progress, people's pursuit of material life improvement requires consumption There are more and more energy sources, and the application of a large amount of petrochemical energy has caused irreversible damage to people's living environment, so it is urgent to seek clean energy (such as solar energy, wind energy, etc.). Today's active materials for solar cell devices occupy a major market position with crystalline silicon and inorganic semiconductor materials. However, its unfavorable factors such as high cost and serious environmental pollution limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/42H01L51/46
CPCC08G61/126C08G2261/124C08G2261/1412C08G2261/149C08G2261/18C08G2261/3223C08G2261/3243C08G2261/3246C08G2261/414C08G2261/91H10K85/151H10K85/113H10K30/00Y02E10/549Y02P70/50
Inventor 周逸辉秦元成倪彩玲熊云奇熊丽雯张俊辉肖文君严浩东艾禹川
Owner NANCHANG HANGKONG UNIVERSITY
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