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Near infrared sensitized exciton upconversion luminescence from inorganic perovskite nanocrystals

Author

Listed:
  • Yiyan Zhang

    (Harbin Institute of Technology
    Harbin Institute of Technology)

  • Tianyu Zhao

    (Harbin Institute of Technology
    Harbin Institute of Technology)

  • Yuming Deng

    (Beijing Institute of Technology)

  • Xinyue Liu

    (Beijing Institute of Technology)

  • Xiaorong Zhang

    (Harbin Institute of Technology
    Harbin Institute of Technology)

  • Tong Zhu

    (Beijing Institute of Technology)

  • Hans Ågren

    (Harbin Institute of Technology
    Harbin Institute of Technology
    Uppsala University SE-)

  • Guanying Chen

    (Harbin Institute of Technology
    Harbin Institute of Technology
    Harbin KY Semiconductor, Inc.)

Abstract

Lead halide perovskites serve as an important class of photoelectrical materials in modern technological applications, such as light emitting diodes, photodetectors, and solar cells. However, the inability to respond to near infrared light poses a tight constraint on their performances. This study reports a class of broadband near infrared-responsive inorganic lead halide perovskite nanocrystals, which emit a palette of tunable upconversion luminescence via organic dye-lanthanide tandem sensitization. The coordination of dyes (IR783) to the surface of ytterbium-doped cesium lead halide nanocrystals entails an intense and broad spectral response range of near infrared light (600-860 nm). Sub-10 Wcm−2 light irradiance at 804 nm induced ultrabright exciton luminescence (tunable from 520 to 625 nm), about 27,500 folds brighter than the one without dye sensitization, with upconversion brightness reaching 3.22 M−1cm−1. Transient absorption spectra revealed an ultrafast triplet energy transfer process (9.28 × 108 s−1) from dyes to ytterbium dopants with near-unity efficiency (98.4%), followed by cooperative sensitization that excites delocalized excitons. These broadband near infrared-responsive inorganic perovskite nanocrystals have implications for applications ranging from solar cells to near infrared imaging and sensing.

Suggested Citation

  • Yiyan Zhang & Tianyu Zhao & Yuming Deng & Xinyue Liu & Xiaorong Zhang & Tong Zhu & Hans Ågren & Guanying Chen, 2025. "Near infrared sensitized exciton upconversion luminescence from inorganic perovskite nanocrystals," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-61293-0
    DOI: 10.1038/s41467-025-61293-0
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    References listed on IDEAS

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    1. Wei Zheng & Ping Huang & Zhongliang Gong & Datao Tu & Jin Xu & Qilin Zou & Renfu Li & Wenwu You & Jean-Claude G. Bünzli & Xueyuan Chen, 2018. "Near-infrared-triggered photon upconversion tuning in all-inorganic cesium lead halide perovskite quantum dots," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    2. Longfei Ruan & Yong Zhang, 2021. "NIR-excitable heterostructured upconversion perovskite nanodots with improved stability," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
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