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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 3 — Mar. 1, 2012
  • pp: 341–349

Persistent luminescence in MSi2O2N2:Eu phosphors

Jonas Botterman, Koen Van den Eeckhout, Adrie J. J. Bos, Pieter Dorenbos, and Philippe F. Smet  »View Author Affiliations


Optical Materials Express, Vol. 2, Issue 3, pp. 341-349 (2012)
http://dx.doi.org/10.1364/OME.2.000341


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Abstract

In this work we study the persistent luminescence properties of europium-doped alkaline earth silicon oxynitrides (CaSi2O2N2, SrSi2O2N2 and BaSi2O2N2). All compounds show afterglow emission, with an emission spectrum which is similar to the steady state photoluminescence. The afterglow decay time for BaSi2O2N2:Eu and SrSi2O2N2:Eu is about 50 and 100 minutes respectively, while for CaSi2O2N2:Eu the afterglow intensity is very low. Although the persistent luminescence can be induced by ultraviolet light (250-300 nm) in all three phosphors, only for BaSi2O2N2:Eu low energy radiation (350-500 nm) allows filling of the traps responsible for the afterglow.

© 2012 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.2900) Materials : Optical storage materials
(160.5690) Materials : Rare-earth-doped materials
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(250.5230) Optoelectronics : Photoluminescence

ToC Category:
Fluorescent and Luminescent Materials

History
Original Manuscript: December 20, 2011
Revised Manuscript: February 23, 2012
Manuscript Accepted: February 23, 2012
Published: February 27, 2012

Virtual Issues
Persistent Phosphors (2012) Optical Materials Express

Citation
Jonas Botterman, Koen Van den Eeckhout, Adrie J. J. Bos, Pieter Dorenbos, and Philippe F. Smet, "Persistent luminescence in MSi2O2N2:Eu phosphors," Opt. Mater. Express 2, 341-349 (2012)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-3-341


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References

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