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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 10 — May. 15, 2013
  • pp: 1739–1741

Nonradiative energy transfer between two different activator sites in La4−xCaxSi12O3+xN18−x:Eu2+

Woon Bae Park, Youngjun Song, Myoungho Pyo, and Kee-Sun Sohn  »View Author Affiliations

Optics Letters, Vol. 38, Issue 10, pp. 1739-1741 (2013)

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Energy transfer, which affects the entire performance of luminescent material, has been generally treated as an averaged parameter by assuming the host material to be a homogeneous continuum. However, energy transfer should be investigated in association with the crystallographic local structure around an activator site. To accomplish this, we established an analytical model and derived comprehensive rate equations, elucidating the relationship between the local structure and energy transfer behavior of La4xCaxSi12O3+xN18x:Eu2+, which is a recently discovered luminescent material for use in light-emitting diodes. Using the rate-equation model with the assistance of particle swarm optimization, the full-scale decay curves of donors and acceptors located at different crystallographic sites was computed.

© 2013 Optical Society of America

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

ToC Category:
Physical Optics

Original Manuscript: April 12, 2013
Manuscript Accepted: April 17, 2013
Published: May 15, 2013

Woon Bae Park, Youngjun Song, Myoungho Pyo, and Kee-Sun Sohn, "Nonradiative energy transfer between two different activator sites in La4−xCaxSi12O3+xN18−x:Eu2+," Opt. Lett. 38, 1739-1741 (2013)

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