Fluorobenzene-containing terminated polymer as well as preparation method and application thereof

By improving the morphology and ordered structure of the active layer using fluorinated benzene-terminated polymers, the photoelectric performance and stability issues of polymer photovoltaic materials were solved, and efficient and stable polymer solar cell performance was achieved.

CN119285909APending Publication Date: 2025-01-10SHANGHAI ZHUYANG NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202310838693.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-07-10
Publication Date
2025-01-10

AI Technical Summary

Technical Problem

The photoelectric performance and stability of existing polymer photovoltaic materials still have considerable room for improvement, making it difficult to meet the demand for high-efficiency and long-life polymer solar cells.

Method used

A medium-band conjugated polymer was prepared by using a fluorinated benzene-terminated polymer, introducing benzodithiophene as a donor unit and dithiophenedione as an acceptor unit, combining a benzene ring structure as the end cap, and introducing fluorine groups at the polymer end. This improved the morphology and ordered structure of the active layer, and enhanced its mobility and stability.

Benefits of technology

It improves the photoelectric performance and stability of polymer solar cells, enhances the lifespan and efficiency of the devices, and has a simple preparation method with mild reaction conditions, making it suitable for large-area fabrication.

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Abstract

The invention discloses a fluorobenzene-containing terminated polymer as well as a preparation method and application thereof. The structural formula of the fluorobenzene-containing terminated polymer is as follows: # imgabs0 #, r3 and R4 are independently selected from one of hydrogen, alkyl of a straight chain or a branched chain with the carbon atom number of 1-20, naphthenic base with the carbon atom number of 6-20, alkoxy of a straight chain or a branched chain with the carbon atom number of 1-20, alkoxy of a straight chain or a branched chain with the carbon atom number of 1-20 and aryl containing one or more aromatic rings, Ar is a fluorobenzene-containing end-capped protecting group, and n is a natural number of 10-1000. The fluorobenzene-containing terminated polymer disclosed by the invention has better terminal stacking performance, and can induce and regulate an ordered structure of an active layer, construct a continuous phase, improve hole mobility and effectively improve device performance; the introduction of the fluorobenzene terminal can obtain the active layer morphology with stable structure, crosslinkable performance and continuous space, improves the stability of the device, prolongs the service life of the device, and has a good application prospect.
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