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Solar-blind ultraviolet-C persistent luminescence phosphors

Author

Listed:
  • Xianli Wang

    (University of Georgia)

  • Yafei Chen

    (King Fahd University of Petroleum and Minerals)

  • Feng Liu

    (Northeast Normal University)

  • Zhengwei Pan

    (King Fahd University of Petroleum and Minerals)

Abstract

Visible-light and infrared-light persistent phosphors are extensively studied and are being used as self-sustained glowing tags in darkness. In contrast, persistent phosphors for higher-energy, solar-blind ultraviolet-C wavelengths (200–280 nm) are lacking. Also, persistent tags working in bright environments are not available. Here we report five types of Pr3+-doped silicates (melilite, cyclosilicate, silicate garnet, oxyorthosilicate, and orthosilicate) ultraviolet-C persistent phosphors that can act as self-sustained glowing tags in bright environments. These ultraviolet-C persistent phosphors can be effectively charged by a standard 254 nm lamp and emit intense, long-lasting afterglow at 265–270 nm, which can be clearly monitored and imaged by a corona camera in daylight and room light. Besides thermal-stimulation, in bright environments, photo-stimulation also contributes to the afterglow emission and its contribution can be dominant when ambient light is strong. This study expands persistent luminescence research to the ultraviolet-C wavelengths and brings persistent luminescence applications to light.

Suggested Citation

  • Xianli Wang & Yafei Chen & Feng Liu & Zhengwei Pan, 2020. "Solar-blind ultraviolet-C persistent luminescence phosphors," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16015-z
    DOI: 10.1038/s41467-020-16015-z
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