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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 18900–18905

Ultraviolet light induced white light emission in Ag and Eu3+ co-doped oxyfluoride glasses

Hai Guo, XiaoFeng Wang, JinDeng Chen, and Fang Li  »View Author Affiliations

Optics Express, Vol. 18, Issue 18, pp. 18900-18905 (2010)

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Transparent Ag and Eu3+ co-doped oxyfluoride glasses with composition 50SiO2-20Al2O3-30CaF2 were prepared by melt-quenching technique. The structural and luminescent properties of glasses, energy transfer mechanism between luminescent centers were systematically investigated. The missing nanoparticles signals in absorption spectra, XRD patterns and TEM images, the additional broad excitation band at 325-375 nm indicate that the broad emission band at 400-700 nm is originated from very small molecule-like, non-plasmonic Ag particles (ML-Ag-particles). A perfect white light emission was realized by combining intense red emission of Eu3+ with broad band emission of ML-Ag-particles. These results suggest that Ag and Eu3+ co-doped oxyfluoride glasses could be potentially applied as white light-emitting phosphors for ultra-violet LED chips.

© 2010 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:

Original Manuscript: July 6, 2010
Revised Manuscript: July 29, 2010
Manuscript Accepted: August 1, 2010
Published: August 19, 2010

Hai Guo, XiaoFeng Wang, JinDeng Chen, and Fang Li, "Ultraviolet light induced white light emission in Ag and Eu3+ co-doped oxyfluoride glasses," Opt. Express 18, 18900-18905 (2010)

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