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Double Cathode Modification Improves Charge Transport and Stability of Organic Solar Cells

Author

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  • Tao Lin

    (Department of Physics, Beijing Technology and Business University, Beijing 100048, China)

  • Tingting Dai

    (Department of Physics, Beijing Technology and Business University, Beijing 100048, China)

Abstract

Introducing a cathode modification layer is an effective method to obtaining highly efficient organic solar cells (OSCs) and improving their stability. Herein, we innovatively introduced a double cathode modification layer (SnO 2 /ZnO) into a non-fullerene OSCs based on PM7:IT-4F and explored the mechanisms. The effects of SnO 2 /ZnO film on charge carriers transfer in OSCs are studied via a variety of electrical testing methods including Photo-CELIV measurements. As a result, a cathode buffer layer with low recombination rate and high carrier mobility could be introduced, which is beneficial to electron transport and collection. The champion device based on the double cathode modification layer acquires an efficiency of 12.91%, obviously higher than that of the single cathode modification layer (SnO 2 or ZnO) device. Moreover, The SnO 2 /ZnO double layer is demonstrated to be of great help in the improvement of device stability, and our work could provide a new inspiration for the preparation of OSCs cathode modification layer.

Suggested Citation

  • Tao Lin & Tingting Dai, 2022. "Double Cathode Modification Improves Charge Transport and Stability of Organic Solar Cells," Energies, MDPI, vol. 15(20), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7643-:d:943978
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    Cited by:

    1. Yu Jiang & Youjun Bai & Shenghao Wang, 2023. "Organic Solar Cells: From Fundamental to Application," Energies, MDPI, vol. 16(5), pages 1-3, February.

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