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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 17 — Aug. 26, 2013
  • pp: 20280–20290

SiOC thin films: an efficient light source and an ideal host matrix for Eu2+ ions

Gabriele Bellocchi, Fabio Iacona, Maria Miritello, Tiziana Cesca, and Giorgia Franzò  »View Author Affiliations


Optics Express, Vol. 21, Issue 17, pp. 20280-20290 (2013)
http://dx.doi.org/10.1364/OE.21.020280


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Abstract

The intense luminescence of SiOC layers is studied and its dependence on the parameters of the thermal annealing process elucidated. Although the emission of SiOC is bright enough to be interesting for practical applications, this material is even more promising as a host matrix for optically active Eu ions. Indeed, when incorporated in a SiOC matrix, Eu3+ ions are efficiently reduced to Eu2+, producing a very strong visible luminescence peaked at 440 nm. Eu2+ ions benefit also of the occurrence of an energy transfer mechanism involving the matrix, which increases the efficiency of photon absorption for exciting wavelengths shorter than 300 nm. We evaluate that Eu doping of SiOC produces an enhancement of the luminescence intensity at 440 nm accounting for about a factor of 15. These properties open the way to new promising perspectives for the application of Eu-doped materials in photonic and lighting technologies.

© 2013 OSA

OCIS Codes
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(260.3800) Physical optics : Luminescence

ToC Category:
Materials

History
Original Manuscript: May 16, 2013
Revised Manuscript: June 12, 2013
Manuscript Accepted: June 12, 2013
Published: August 22, 2013

Citation
Gabriele Bellocchi, Fabio Iacona, Maria Miritello, Tiziana Cesca, and Giorgia Franzò, "SiOC thin films: an efficient light source and an ideal host matrix for Eu2+ ions," Opt. Express 21, 20280-20290 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-17-20280


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