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“Eu2+ bridge” strategy is presented to largely extend Yb3+ absorption to visible range, and successfully realize efficient visible light pumped NIR-II emission via energy transfer from Eu2+ to Yb3+. Meanwhile, to balance the valence state of reduced Eu2+ and oxidized Yb3+, the pre-prepared EuS is used as precursor instead of Eu2O3, which significantly increases the NIR-II luminescence of Yb3+ by 6 times. Detailed energy transfer and luminescence enhancement mechanism are discussed. Finally, a NIR-II pc-LED is fabricated with photoelectric efficiency of 12.61%@50 mA and output power of 74.09 mW@300 mA. Subsequently, a miniaturized and real-time test system is integrated based on the convolutional neural network technology to accurate predict organic solvents with different concentrations. This study not only introduces a new strategy to realize visible light-excited Yb3+-doped NIR-II emitting phosphors, but also promotes their innovative application based on NIR spectroscopy technology.

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• In Copyright
  

  This is the peer reviewed version of the following article: Z. Li, G. Zhu, H. Li, Q. Zhu, Y. Cong, X. Bai, J.-G. Li, B. Dong, Visible Light Excited Yb3+-Doped Phosphor Via Eu2+ Bridged Energy Transfer Toward NIR-II Spectroscopy Application. Laser Photonics Rev 2025, 19, 2402162, which has been published in final form at https://doi.org/10.1002/lpor.202402162. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

Keyword: Garnet, Yb3+, Eu2+, Energy transfer, NIR-II luminescence

Date published: 2025-04-02

Publisher: Wiley

Journal:

• LASER & PHOTONICS REVIEWS (ISSN: 18638880) vol. 19 issue. 14

Funding:

• National Key Research and Development Program of China 2024YFA1409900
• National Natural Science Foundation of China U21A2074
• National Natural Science Foundation of China U24A2018
• National Natural Science Foundation of China U21A2068
• National Natural Science Foundation of China 62375038
• National Natural Science Foundation of China 12174046
• National Natural Science Foundation of China 12274057
• Fundamental Research Funds for the Central Universities 04442024068

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5606

First published URL: https://doi.org/10.1002/lpor.202402162

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Updated at: 2026-02-14 22:14:44 +0900

Published on MDR: 2026-04-02 08:26:00 +0900