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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10806–10813

Improved color rendering and luminous efficacy in phosphor-converted white light-emitting diodes by use of dual-blue emitting active regions

Roya Mirhosseini, Martin F. Schubert, Sameer Chhajed, Jaehee Cho, Jong Kyu Kim, and E. Fred Schubert  »View Author Affiliations


Optics Express, Vol. 17, Issue 13, pp. 10806-10813 (2009)
http://dx.doi.org/10.1364/OE.17.010806


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Abstract

Conventional white-light sources suffer from a fundamental trade-off between color rendering index and the luminous efficacy; increasing one generally comes at the expense of the other. We demonstrate through simulation that dual-wavelength blue-emitting active regions in phosphor-converted white light sources maximize the output luminous flux while significantly increasing the color rendering ability. Our results indicate that such improvements can be achieved over a broad range of correlated color temperatures.

© 2009 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(330.1715) Vision, color, and visual optics : Color, rendering and metamerism

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: April 1, 2009
Revised Manuscript: May 29, 2009
Manuscript Accepted: June 5, 2009
Published: June 12, 2009

Citation
Roya Mirhosseini, Martin F. Schubert, Sameer Chhajed, Jaehee Cho, Jong Kyu Kim, and E. Fred Schubert, "Improved color rendering and luminous efficacy in phosphor-converted white light-emitting diodes by use of dual-blue emitting active regions," Opt. Express 17, 10806-10813 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-13-10806


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