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Force-light-heat stimulation-induced multicolor chromism and multifunctional applications of europium tungstate phosphor

Author

Listed:
  • Yingzhu Zi

    (Kunming University of Science and Technology
    Southwest United Graduate School)

  • Anjun Huang

    (Kunming University of Science and Technology)

  • Heping Zhao

    (Kunming University of Science and Technology
    Southwest United Graduate School)

  • Xue Bai

    (Kunming University of Science and Technology)

  • Yue Liu

    (Kunming University of Science and Technology)

  • Yangke Cun

    (Kunming University of Science and Technology)

  • Zhiguo Song

    (Kunming University of Science and Technology
    Southwest United Graduate School)

  • Jianbei Qiu

    (Kunming University of Science and Technology
    Southwest United Graduate School)

  • Yang Shen

    (Southwest United Graduate School
    Tsinghua University)

  • Ji Zhou

    (Southwest United Graduate School
    Tsinghua University)

  • Zhengwen Yang

    (Kunming University of Science and Technology
    Southwest United Graduate School)

Abstract

Stimulus-responsive chromogenic luminescent materials are promising for security and optical storage, yet force-induced color change in inorganic materials remains rarely reported. Here we report a europium tungstate that exhibits mechanochromism, driven by pressure-induced tungsten valence transformation and color center formation. The sample color shifts from orange to black with increasing pressure, accompanied by a linear variation in reflectance. A luminescence modulation rate of 100% for Eu3+ is achieved due to the strong reabsorption of the black state. Negative photochromism, switching from black/orange to white, occurs under laser irradiation or heating via the reversible phase transition between EuWO4 and Eu2W2O9. The luminescence modulation is attributed to the synergistic effects of body color reabsorption and nonradiative transitions. Our work demonstrates a robust inorganic material responsive to force, light, and heat, offering versatile functionality for pressure sensing, anti-counterfeiting, and optical storage, and provides a design strategy for multicolor chromogenic materials.

Suggested Citation

  • Yingzhu Zi & Anjun Huang & Heping Zhao & Xue Bai & Yue Liu & Yangke Cun & Zhiguo Song & Jianbei Qiu & Yang Shen & Ji Zhou & Zhengwen Yang, 2025. "Force-light-heat stimulation-induced multicolor chromism and multifunctional applications of europium tungstate phosphor," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-62167-1
    DOI: 10.1038/s41467-025-62167-1
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