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Identifying near-Infrared persistent luminescence in Cr3+-doped magnesium gallogermanates featuring afterglow emission at extremely low temperature

Jiaren Du (UGent) and Dirk Poelman (UGent)
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Abstract
Room-temperature persistent phosphors emitting in a wide spectral range are extensively explored owing to their commercial interest in applications such as night-vision signs and medical imaging. However, phosphors featuring long-lasting near-infrared emission at extremely low temperature are barely reported so far. Herein, a design of trivalent chromium-activated magnesium gallogermanates (Mg1+xGa2-2xGexO4:Cr3+) is demonstrated that exhibit strong near-infrared afterglow emission at low temperature, e.g., -80 degrees C. Notably, this new persistent phosphor can be efficiently activated even at these low temperatures. A combination of experimental characterizations together with simulations has identified its novel low-temperature persistent luminescence and good capacity of stabilizing a large number of very shallow traps. The finding of this low-temperature near-infrared afterglow property opens up a new frontier for exploring persistent phosphors and provides an opportunity for novel applications at extreme conditions, such as cryopreservation of biological samples.
Keywords
low-temperature afterglow, near-infrared phosphors, persistent luminescence, TRAP DEPTH, PHOSPHORS, THERMOLUMINESCENCE, SUBSTITUTION, GERMANIUM, STORAGE

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Please use this url to cite or link to this publication:

MLA
Du, Jiaren, and Dirk Poelman. “Identifying Near-Infrared Persistent Luminescence in Cr3+-Doped Magnesium Gallogermanates Featuring Afterglow Emission at Extremely Low Temperature.” ADVANCED OPTICAL MATERIALS, vol. 8, no. 6, 2020, doi:10.1002/adom.201901848.
APA
Du, J., & Poelman, D. (2020). Identifying near-Infrared persistent luminescence in Cr3+-doped magnesium gallogermanates featuring afterglow emission at extremely low temperature. ADVANCED OPTICAL MATERIALS, 8(6). https://doi.org/10.1002/adom.201901848
Chicago author-date
Du, Jiaren, and Dirk Poelman. 2020. “Identifying Near-Infrared Persistent Luminescence in Cr3+-Doped Magnesium Gallogermanates Featuring Afterglow Emission at Extremely Low Temperature.” ADVANCED OPTICAL MATERIALS 8 (6). https://doi.org/10.1002/adom.201901848.
Chicago author-date (all authors)
Du, Jiaren, and Dirk Poelman. 2020. “Identifying Near-Infrared Persistent Luminescence in Cr3+-Doped Magnesium Gallogermanates Featuring Afterglow Emission at Extremely Low Temperature.” ADVANCED OPTICAL MATERIALS 8 (6). doi:10.1002/adom.201901848.
Vancouver
1.
Du J, Poelman D. Identifying near-Infrared persistent luminescence in Cr3+-doped magnesium gallogermanates featuring afterglow emission at extremely low temperature. ADVANCED OPTICAL MATERIALS. 2020;8(6).
IEEE
[1]
J. Du and D. Poelman, “Identifying near-Infrared persistent luminescence in Cr3+-doped magnesium gallogermanates featuring afterglow emission at extremely low temperature,” ADVANCED OPTICAL MATERIALS, vol. 8, no. 6, 2020.
@article{8639798,
  abstract     = {Room-temperature persistent phosphors emitting in a wide spectral range are extensively explored owing to their commercial interest in applications such as night-vision signs and medical imaging. However, phosphors featuring long-lasting near-infrared emission at extremely low temperature are barely reported so far. Herein, a design of trivalent chromium-activated magnesium gallogermanates (Mg1+xGa2-2xGexO4:Cr3+) is demonstrated that exhibit strong near-infrared afterglow emission at low temperature, e.g., -80 degrees C. Notably, this new persistent phosphor can be efficiently activated even at these low temperatures. A combination of experimental characterizations together with simulations has identified its novel low-temperature persistent luminescence and good capacity of stabilizing a large number of very shallow traps. The finding of this low-temperature near-infrared afterglow property opens up a new frontier for exploring persistent phosphors and provides an opportunity for novel applications at extreme conditions, such as cryopreservation of biological samples.},
  articleno    = {1901848},
  author       = {Du, Jiaren and Poelman, Dirk},
  issn         = {2195-1071},
  journal      = {ADVANCED OPTICAL MATERIALS},
  keywords     = {low-temperature afterglow,near-infrared phosphors,persistent luminescence,TRAP DEPTH,PHOSPHORS,THERMOLUMINESCENCE,SUBSTITUTION,GERMANIUM,STORAGE},
  language     = {eng},
  number       = {6},
  pages        = {8},
  title        = {Identifying near-Infrared persistent luminescence in Cr3+-doped magnesium gallogermanates featuring afterglow emission at extremely low temperature},
  url          = {http://dx.doi.org/10.1002/adom.201901848},
  volume       = {8},
  year         = {2020},
}

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