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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S5 — Aug. 25, 2014
  • pp: A1237–A1242

Improvement of phosphor modeling based on the absorption of Stokes shifted light by a phosphor

Sie-Wook Jeon, Ju Hyun Noh, Ki Hyun Kim, Wan Ho Kim, Changhun Yun, Sang Bin Song, and Jae Pil Kim  »View Author Affiliations


Optics Express, Vol. 22, Issue S5, pp. A1237-A1242 (2014)
http://dx.doi.org/10.1364/OE.22.0A1237


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Abstract

We have found that the emission spectrum of phosphors measured in the powder state differs from that measured for a single phosphor. When the emission spectrum of the powder state is adopted in an optical simulation, the simulated optical properties e.g., the correlated color temperature, color rendering index, and chromaticity coordinates, show a remarkable discrepancy from those of the fabricated LED package. However, the discrepancy is significantly improved when the emission spectrum from a low concentration of phosphor in a silicone binder is employed. We suggest that the discrepancy originates from the absorption of Stokes shifted light by a phosphor.

© 2014 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(220.4298) Optical design and fabrication : Nonimaging optics

ToC Category:
Light-Emitting Diodes

History
Original Manuscript: April 16, 2014
Revised Manuscript: June 12, 2014
Manuscript Accepted: June 16, 2014
Published: July 10, 2014

Citation
Sie-Wook Jeon, Ju Hyun Noh, Ki Hyun Kim, Wan Ho Kim, Changhun Yun, Sang Bin Song, and Jae Pil Kim, "Improvement of phosphor modeling based on the absorption of Stokes shifted light by a phosphor," Opt. Express 22, A1237-A1242 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S5-A1237


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