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Surface-binding molecular multipods strengthen the halide perovskite lattice and boost luminescence

Author

Listed:
  • Dong-Hyeok Kim

    (Seoul National University)

  • Seung-Je Woo

    (Seoul National University)

  • Claudia Pereyra Huelmo

    (University of Pennsylvania)

  • Min-Ho Park

    (Seoul National University)

  • Aaron M. Schankler

    (University of Pennsylvania)

  • Zhenbang Dai

    (University of Pennsylvania)

  • Jung-Min Heo

    (Seoul National University)

  • Sungjin Kim

    (Seoul National University)

  • Guy Reuveni

    (Weizmann Institute of Science)

  • Sungsu Kang

    (Seoul National University)

  • Joo Sung Kim

    (Seoul National University)

  • Hyung Joong Yun

    (Korea Basic Science Institute (KBSI))

  • Jinwoo Park

    (Seoul National University)

  • Jungwon Park

    (Seoul National University
    Institute for Basic Science (IBS))

  • Omer Yaffe

    (Weizmann Institute of Science)

  • Andrew M. Rappe

    (University of Pennsylvania)

  • Tae-Woo Lee

    (Seoul National University
    Seoul National University
    SN Display Co., Ltd.
    Seoul National University)

Abstract

Reducing the size of perovskite crystals to confine excitons and passivating surface defects has fueled a significant advance in the luminescence efficiency of perovskite light-emitting diodes (LEDs). However, the persistent gap between the optical limit of electroluminescence efficiency and the photoluminescence efficiency of colloidal perovskite nanocrystals (PeNCs) suggests that defect passivation alone is not sufficient to achieve highly efficient colloidal PeNC-LEDs. Here, we present a materials approach to controlling the dynamic nature of the perovskite surface. Our experimental and theoretical studies reveal that conjugated molecular multipods (CMMs) adsorb onto the perovskite surface by multipodal hydrogen bonding and van der Waals interactions, strengthening the near-surface perovskite lattice and reducing ionic fluctuations which are related to nonradiative recombination. The CMM treatment strengthens the perovskite lattice and suppresses its dynamic disorder, resulting in a near-unity photoluminescence quantum yield of PeNC films and a high external quantum efficiency (26.1%) of PeNC-LED with pure green emission that matches the Rec.2020 color standard for next-generation vivid displays.

Suggested Citation

  • Dong-Hyeok Kim & Seung-Je Woo & Claudia Pereyra Huelmo & Min-Ho Park & Aaron M. Schankler & Zhenbang Dai & Jung-Min Heo & Sungjin Kim & Guy Reuveni & Sungsu Kang & Joo Sung Kim & Hyung Joong Yun & Jin, 2024. "Surface-binding molecular multipods strengthen the halide perovskite lattice and boost luminescence," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49751-7
    DOI: 10.1038/s41467-024-49751-7
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    References listed on IDEAS

    as
    1. Nengxu Li & Shuxia Tao & Yihua Chen & Xiuxiu Niu & Chidozie K. Onwudinanti & Chen Hu & Zhiwen Qiu & Ziqi Xu & Guanhaojie Zheng & Ligang Wang & Yu Zhang & Liang Li & Huifen Liu & Yingzhuo Lun & Jiawang, 2019. "Cation and anion immobilization through chemical bonding enhancement with fluorides for stable halide perovskite solar cells," Nature Energy, Nature, vol. 4(5), pages 408-415, May.
    2. Kwon-Hyeon Kim & Sunghun Lee & Chang-Ki Moon & Sei-Yong Kim & Young-Seo Park & Jeong-Hwan Lee & Jin Woo Lee & June Huh & Youngmin You & Jang-Joo Kim, 2014. "Phosphorescent dye-based supramolecules for high-efficiency organic light-emitting diodes," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
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