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Excitation energy mediated cross-relaxation for tunable upconversion luminescence from a single lanthanide ion

Author

Listed:
  • Xiao Fu

    (Jinan University)

  • Shuai Fu

    (Shanghai University)

  • Qi Lu

    (Jinan University)

  • Jing Zhang

    (Shanghai University)

  • Pingping Wan

    (Hefei University of Technology)

  • Jinliang Liu

    (Shanghai University)

  • Yong Zhang

    (National University of Singapore)

  • Chia-Hung Chen

    (City University of Hong Kong)

  • Wei Li

    (Jinan University)

  • Huadong Wang

    (Jinan University)

  • Qingsong Mei

    (Jinan University
    Jinan University)

Abstract

Precise control of energy migration between sensitizer ions and activator ions in lanthanide-doped upconversion nanoparticles (UCNPs) nowadays has been extensively investigated to achieve efficient photon upconversion. However, these UCNPs generally emit blue, green or red light only under fixed excitation conditions. In this work, regulation of the photon transition process between different energy levels of a single activator ion to obtain tunable upconversion fluorescence under different excitation conditions is achieved by introducing a modulator ion. The cross-relaxation process between modulator ion and activator ion can be controlled to generate tunable luminescence from the same lanthanide activator ion under excitation at different wavelengths or with different laser power density and pulse frequency. This strategy has been tested and proven effective in two different nanocrystal systems and its usefulness has been demonstrated for high-level optical encryption.

Suggested Citation

  • Xiao Fu & Shuai Fu & Qi Lu & Jing Zhang & Pingping Wan & Jinliang Liu & Yong Zhang & Chia-Hung Chen & Wei Li & Huadong Wang & Qingsong Mei, 2022. "Excitation energy mediated cross-relaxation for tunable upconversion luminescence from a single lanthanide ion," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32498-4
    DOI: 10.1038/s41467-022-32498-4
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    Cited by:

    1. Long Yan & Jinshu Huang & Zhengce An & Qinyuan Zhang & Bo Zhou, 2024. "Spatiotemporal control of photochromic upconversion through interfacial energy transfer," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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