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

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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+, Ge(4+ )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 nearinfrared light emission before the intensity drops to 5 x 10(-4) mWsr(-1) m(-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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MLA
Zhao, Ying, et al. “Enhanced Near-Infrared Persistent Luminescence in MgGa2O4:Cr3+ through Codoping.” JOURNAL OF LUMINESCENCE, vol. 220, 2020, doi:10.1016/j.jlumin.2020.117035.
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, 220. https://doi.org/10.1016/j.jlumin.2020.117035
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 220. https://doi.org/10.1016/j.jlumin.2020.117035.
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 220. doi:10.1016/j.jlumin.2020.117035.
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;220.
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, vol. 220, 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+, Ge(4+ )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 nearinfrared light emission before the intensity drops to 5 x 10(-4) mWsr(-1) m(-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}},
  pages        = {{7}},
  title        = {{Enhanced near-infrared persistent luminescence in MgGa2O4:Cr3+ through codoping}},
  url          = {{http://dx.doi.org/10.1016/j.jlumin.2020.117035}},
  volume       = {{220}},
  year         = {{2020}},
}

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