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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 7,
  • Issue 5,
  • pp. 416-418
  • (2009)

Research on upconversion luminescence in new Er3+/Yb3+ codoped oxyfluoride borosilicate glass ceramics

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Abstract

The upconversion luminescence of Er3+/Yb3+ ions is researched in a novel transparent oxyfluoride borosilicate glass and glass ceramics under 980-nm excitation. Fluoride nanocrystals Ba2YF7 are successfully precipitated in glass matrix, which is affirmed by the X-ray diffraction results. Compared with the parent glasses, significant enhancement of upconversion luminescence is observed in the Er3+/Yb3+ codoped transparent glass-ceramics, which may be due to the variation of coordination environment around Er3+ and Yb3+ ions after crystallization. The possible upconversion mechanism is also discussed.

© 2009 Chinese Optics Letters

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