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The coupling and competition of crystallization and phase separation, correlating thermodynamics and kinetics in OPV morphology and performances

Author

Listed:
  • Zaiyu Wang

    (Shanghai Jiao Tong University
    The Hong Kong University of Science and Technology, Clear Water Bay)

  • Ke Gao

    (University of Washington)

  • Yuanyuan Kan

    (University of Washington)

  • Ming Zhang

    (Shanghai Jiao Tong University)

  • Chaoqun Qiu

    (Shanghai Jiao Tong University)

  • Lei Zhu

    (Shanghai Jiao Tong University)

  • Zhe Zhao

    (Shanghai Jiao Tong University)

  • Xiaobin Peng

    (South China University of Technology)

  • Wei Feng

    (State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future Hydrogen Energy Materials Company)

  • Zhiyuan Qian

    (The University of Southern Mississippi)

  • Xiaodan Gu

    (The University of Southern Mississippi)

  • Alex K.-Y. Jen

    (University of Washington
    City University of Hong Kong)

  • Ben Zhong Tang

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Yong Cao

    (South China University of Technology)

  • Yongming Zhang

    (Shanghai Jiao Tong University)

  • Feng Liu

    (Shanghai Jiao Tong University)

Abstract

The active layer morphology transition of organic photovoltaics under non-equilibrium conditions are of vital importance in determining the device power conversion efficiency and stability; however, a general and unified picture on this issue has not been well addressed. Using combined in situ and ex situ morphology characterizations, morphological parameters relating to kinetics and thermodynamics of morphology evolution are extracted and studied in model systems under thermal annealing. The coupling and competition of crystallization and demixing are found to be critical in morphology evolution, phase purification and interfacial orientation. A unified model summarizing different phase diagrams and all possible kinetic routes is proposed. The current observations address the fundamental issues underlying the formation of the complex multi-length scale morphology in bulk heterojunction blends and provide useful morphology optimization guidelines for processing devices with higher efficiency and stability.

Suggested Citation

  • Zaiyu Wang & Ke Gao & Yuanyuan Kan & Ming Zhang & Chaoqun Qiu & Lei Zhu & Zhe Zhao & Xiaobin Peng & Wei Feng & Zhiyuan Qian & Xiaodan Gu & Alex K.-Y. Jen & Ben Zhong Tang & Yong Cao & Yongming Zhang &, 2021. "The coupling and competition of crystallization and phase separation, correlating thermodynamics and kinetics in OPV morphology and performances," Nature Communications, Nature, vol. 12(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20515-3
    DOI: 10.1038/s41467-020-20515-3
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    Cited by:

    1. Yuanyuan Jiang & Yixin Li & Feng Liu & Wenxuan Wang & Wenli Su & Wuyue Liu & Songjun Liu & Wenkai Zhang & Jianhui Hou & Shengjie Xu & Yuanping Yi & Xiaozhang Zhu, 2023. "Suppressing electron-phonon coupling in organic photovoltaics for high-efficiency power conversion," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Francisca Werlinger & Camilo Segura & Javier Martínez & Igor Osorio-Roman & Danilo Jara & Seog Joon Yoon & Andrés Fabián Gualdrón-Reyes, 2023. "Current Progress of Efficient Active Layers for Organic, Chalcogenide and Perovskite-Based Solar Cells: A Perspective," Energies, MDPI, vol. 16(16), pages 1-35, August.
    3. Yang Bai & Ze Zhang & Qiuju Zhou & Hua Geng & Qi Chen & Seoyoung Kim & Rui Zhang & Cen Zhang & Bowen Chang & Shangyu Li & Hongyuan Fu & Lingwei Xue & Haiqiao Wang & Wenbin Li & Weihua Chen & Mengyuan , 2023. "Geometry design of tethered small-molecule acceptor enables highly stable and efficient polymer solar cells," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    4. Pinto-Ramos, D. & Echeverría-Alar, S. & Clerc, M.G. & Tlidi, M., 2022. "Vegetation covers phase separation in inhomogeneous environments," Chaos, Solitons & Fractals, Elsevier, vol. 163(C).

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