Polymer photovoltaic material and preparation method and application thereof

By designing novel polymer photovoltaic materials with copoly(fluoroboron dipyrrole) and pyrrolopyrrole dione units, the problem of limited spectral range of organic photovoltaic materials has been solved, achieving broad-spectral absorption and high absorbance, thus improving the performance of organic photovoltaic devices.

CN117003994BActive Publication Date: 2026-06-23YINGKOU XINGHUO NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YINGKOU XINGHUO NEW MATERIAL CO LTD
Filing Date
2023-08-11
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing organic photovoltaic materials have a limited absorption spectral range, which cannot effectively cover a wide range of solar spectra, especially the near-infrared region, resulting in low solar energy utilization efficiency.

Method used

A novel polymer photovoltaic material is designed by copolymerizing fluoroboron dipyrrole (BODIPY) derivative units and pyrrolopyrrole dione (DPP) derivative units to form a polymer with broad spectral absorption and high absorbance, which is then introduced as a third component into binary organic photovoltaic devices.

Benefits of technology

It significantly improves the short-circuit current density and energy conversion efficiency of organic photovoltaic devices, broadens the spectral coverage, enhances the ability to capture sunlight, and is suitable for various types of organic photovoltaic devices.

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Abstract

The application belongs to the field of organic photovoltaics, and relates to a kind of polymer photovoltaic material and its preparation method and application. Double bromide compound A and double side tin compound B are subjected to Stille cross coupling reaction under the action of palladium catalyst, and the polymer photovoltaic material is obtained. The polymer photovoltaic material prepared by the application has an ultra-wide absorption spectrum range from 300 nm to 1200 nm. Such material exhibits an ultra-wide spectral range and a high extinction coefficient, and embodies excellent light absorption capacity. The strong light absorption capacity of the polymer photovoltaic material prepared by the application will help to improve the device efficiency of organic photovoltaics and improve the energy conversion efficiency of the device. The polymer photovoltaic material prepared by the application provides reference value for the design of functional materials in many fields of organic photoelectricity and solar energy utilization and conversion.
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