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Photon upconversion through triplet exciton-mediated energy relay

Author

Listed:
  • Sanyang Han

    (National University of Singapore)

  • Zhigao Yi

    (National University of Singapore)

  • Jiangbin Zhang

    (University of Cambridge
    National University of Defense Technology)

  • Qifei Gu

    (University of Cambridge)

  • Liangliang Liang

    (National University of Singapore)

  • Xian Qin

    (National University of Singapore)

  • Jiahui Xu

    (National University of Singapore)

  • Yiming Wu

    (National University of Singapore)

  • Hui Xu

    (Heilongjiang University)

  • Akshay Rao

    (University of Cambridge)

  • Xiaogang Liu

    (National University of Singapore
    Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University
    National University of Singapore Suzhou Research Institute)

Abstract

Exploration of upconversion luminescence from lanthanide emitters through energy migration has profound implications for fundamental research and technology development. However, energy migration-mediated upconversion requires stringent experimental conditions, such as high power excitation and special migratory ions in the host lattice, imposing selection constraints on lanthanide emitters. Here we demonstrate photon upconversion of diverse lanthanide emitters by harnessing triplet exciton-mediated energy relay. Compared with gadolinium-based systems, this energy relay is less dependent on excitation power and enhances the emission intensity of Tb3+ by 158-fold. Mechanistic investigations reveal that emission enhancement is attributable to strong coupling between lanthanides and surface molecules, which enables fast triplet generation (

Suggested Citation

  • Sanyang Han & Zhigao Yi & Jiangbin Zhang & Qifei Gu & Liangliang Liang & Xian Qin & Jiahui Xu & Yiming Wu & Hui Xu & Akshay Rao & Xiaogang Liu, 2021. "Photon upconversion through triplet exciton-mediated energy relay," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23967-3
    DOI: 10.1038/s41467-021-23967-3
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    Cited by:

    1. Yanxin Zhang & Rongrong Wen & Jialing Hu & Daoming Guan & Xiaochen Qiu & Yunxiang Zhang & Daniel S. Kohane & Qian Liu, 2022. "Enhancement of single upconversion nanoparticle imaging by topologically segregated core-shell structure with inward energy migration," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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