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Long-term efficient organic photovoltaics based on quaternary bulk heterojunctions

Author

Listed:
  • Minwoo Nam

    (Kyung Hee University)

  • Minjeong Cha

    (Kyung Hee University)

  • Hyun Hwi Lee

    (Pohang Accelerator Laboratory)

  • Kahyun Hur

    (Computational Science Center, Korea Institute of Science and Technology)

  • Kyu-Tae Lee

    (Kyung Hee University)

  • Jaehong Yoo

    (Kyung Hee University)

  • Il Ki Han

    (Nanophotonics Research Center, Korea Institute of Science and Technology)

  • S. Joon Kwon

    (Nanophotonics Research Center, Korea Institute of Science and Technology)

  • Doo-Hyun Ko

    (Kyung Hee University)

Abstract

A major impediment to the commercialization of organic photovoltaics (OPVs) is attaining long-term morphological stability of the bulk heterojunction (BHJ) layer. To secure the stability while pursuing optimized performance, multi-component BHJ-based OPVs have been strategically explored. Here we demonstrate the use of quaternary BHJs (q-BHJs) composed of two conjugated polymer donors and two fullerene acceptors as a novel platform to produce high-efficiency and long-term durable OPVs. A q-BHJ OPV (q-OPV) with an experimentally optimized composition exhibits an enhanced efficiency and extended operational lifetime than does the binary reference OPV. The q-OPV would retain more than 72% of its initial efficiency (for example, 8.42–6.06%) after a 1-year operation at an elevated temperature of 65 °C. This is superior to those of the state-of-the-art BHJ-based OPVs. We attribute the enhanced stability to the significant suppression of domain growth and phase separation between the components via kinetic trapping effect.

Suggested Citation

  • Minwoo Nam & Minjeong Cha & Hyun Hwi Lee & Kahyun Hur & Kyu-Tae Lee & Jaehong Yoo & Il Ki Han & S. Joon Kwon & Doo-Hyun Ko, 2017. "Long-term efficient organic photovoltaics based on quaternary bulk heterojunctions," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14068
    DOI: 10.1038/ncomms14068
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    Cited by:

    1. Premkumar Vincent & Jae Won Shim & Jaewon Jang & In Man Kang & Philippe Lang & Jin-Hyuk Bae & Hyeok Kim, 2019. "The Crucial Role of Quaternary Mixtures of Active Layer in Organic Indoor Solar Cells," Energies, MDPI, vol. 12(10), pages 1-9, May.
    2. Sakeena Saifi & Xiao Xiao & Simin Cheng & Haotian Guo & Jinsheng Zhang & Peter Müller-Buschbaum & Guangmin Zhou & Xiaomin Xu & Hui-Ming Cheng, 2024. "An ultraflexible energy harvesting-storage system for wearable applications," Nature Communications, Nature, vol. 15(1), pages 1-16, December.

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