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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 7 — Apr. 1, 2010
  • pp: 1004–1006

Effect of inhomogeneous broadening on time-resolved photoluminescence in CaAlSiN 3 : Eu 2 +

Sangjun Lee and Kee-Sun Sohn  »View Author Affiliations


Optics Letters, Vol. 35, Issue 7, pp. 1004-1006 (2010)
http://dx.doi.org/10.1364/OL.35.001004


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Abstract

The decay behavior of CaAlSiN 3 : Eu 2 + was monitored as a function of the detection wavelength on the Eu 2 + emission band for various Eu 2 + concentrations from 0.0005 to 0.05. The decay at the higher-energy side was faster and less linear than the lower-energy side decay for all Eu 2 + concentrations. This was due to an inhomogeneous broadening induced by the random distribution of Al and Si ions at a crystallographic site in the CaAlSiN 3 structure and to the successive site-to-site energy transfer. This phenomenon caused a redshift of the Eu 2 + emission band as the Eu 2 + concentration increased.

© 2010 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.4670) Materials : Optical materials

ToC Category:
Materials

History
Original Manuscript: December 23, 2009
Revised Manuscript: February 7, 2010
Manuscript Accepted: February 7, 2010
Published: March 26, 2010

Citation
Sangjun Lee and Kee-Sun Sohn, "Effect of inhomogeneous broadening on time-resolved photoluminescence in CaAlSiN3:Eu2+," Opt. Lett. 35, 1004-1006 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-7-1004


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