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Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping

Ying Zhao (UGent) , Jiaren Du (UGent) , Xiuwen Wu, Yafang Wang and Dirk Poelman (UGent)
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Abstract
Near-infrared emitting persistent luminescent materials have potential applications in night-vision surveillance and medical imaging. Rational designing of the phosphor composition is of great importance for achieving sufficiently strong and long-lasting persistent luminescence. Herein, a series of MgGa2O4:Cr3+ phosphors with variable concentrations of Cr3+ were prepared via solid state reaction. MgGa2O4:Cr3+ exhibits strong emission in the range from 650 to 800 nm and three excitation bands centered at 275, 420 and 576 nm. With appropriate selection of codopant M (M = Al3+, Si4+, Ge4+ or Sn4+), the MgGa2O4:Cr3+, M phosphor presents remarkably enhanced persistent luminescence. Moreover, the trap distributions were tuned and the number of traps was greatly increased via codoping. In particular, MgGa2O4:Cr3+, Si4+ shows more than 7 h of persistent near infrared light emission before the intensity drops to 5 *10 4 mWsr-1m-2. Codoping with appropriate ions provides a good example in optimization and development of persistent luminescent phosphors for potential bioimaging applications.
Keywords
MgGa2O4:Cr3+, Persistent luminescence, Codoping

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

MLA
Zhao, Ying, et al. “Enhanced Near-Infrared Persistent Luminescence in MgGa2O4:Cr3+ through Codoping.” Journal of Luminescence, 2020.
APA
Zhao, Y., Du, J., Wu, X., Wang, Y., & Poelman, D. (2020). Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping. Journal of Luminescence.
Chicago author-date
Zhao, Ying, Jiaren Du, Xiuwen Wu, Yafang Wang, and Dirk Poelman. 2020. “Enhanced Near-Infrared Persistent Luminescence in MgGa2O4:Cr3+ through Codoping.” Journal of Luminescence.
Chicago author-date (all authors)
Zhao, Ying, Jiaren Du, Xiuwen Wu, Yafang Wang, and Dirk Poelman. 2020. “Enhanced Near-Infrared Persistent Luminescence in MgGa2O4:Cr3+ through Codoping.” Journal of Luminescence.
Vancouver
1.
Zhao Y, Du J, Wu X, Wang Y, Poelman D. Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping. Journal of Luminescence. 2020;
IEEE
[1]
Y. Zhao, J. Du, X. Wu, Y. Wang, and D. Poelman, “Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping,” Journal of Luminescence, 2020.
@article{8640963,
  abstract     = {Near-infrared emitting persistent luminescent materials have potential applications in night-vision surveillance
and medical imaging. Rational designing of the phosphor composition is of great importance for achieving
sufficiently strong and long-lasting persistent luminescence. Herein, a series of MgGa2O4:Cr3+ phosphors with
variable concentrations of Cr3+ were prepared via solid state reaction. MgGa2O4:Cr3+ exhibits strong emission in
the range from 650 to 800 nm and three excitation bands centered at 275, 420 and 576 nm. With appropriate
selection of codopant M (M = Al3+, Si4+, Ge4+ or Sn4+), the MgGa2O4:Cr3+, M phosphor presents remarkably
enhanced persistent luminescence. Moreover, the trap distributions were tuned and the number of traps was
greatly increased via codoping. In particular, MgGa2O4:Cr3+, Si4+ shows more than 7 h of persistent near infrared light emission before the intensity drops to 5 *10 4 mWsr-1m-2. Codoping with appropriate ions provides a good example in optimization and development of persistent luminescent phosphors for potential bioimaging applications.},
  articleno    = {117035},
  author       = {Zhao, Ying and Du, Jiaren and Wu, Xiuwen and Wang, Yafang and Poelman, Dirk},
  issn         = {0022-2313},
  journal      = {Journal of Luminescence},
  keywords     = {MgGa2O4:Cr3+,Persistent luminescence,Codoping},
  language     = {eng},
  title        = {Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping},
  url          = {http://dx.doi.org/10.1016/j.jlumin.2020.117035},
  year         = {2020},
}

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