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Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S4 — Jul. 1, 2013
  • pp: A687–A694

CCT- and CRI-tuning of white light-emitting diodes using three-dimensional non-close-packed colloidal photonic crystals with photonic stop-bands

Chun-Feng Lai, Chung-Chieh Chang, Ming-Jye Wang, and Mau-Kuen Wu  »View Author Affiliations

Optics Express, Vol. 21, Issue S4, pp. A687-A694 (2013)

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This study exhibited the correlated color temperature (CCT)- and color-rendering index (CRI)-tuning behavior of light emission from white light-emitting diodes (WLEDs) using three-dimensional non-close-packed (3D NCP) colloidal photonic crystals (CPhCs). The CCT of approximately 5300 K (characteristic of cold WLEDs) of white light propagated through the NCP CPhCs dropped to 3000 K (characteristic of warm WLEDs) because of the photonic stop-bands based on the photonic band structures of NCP CPhCs. This study successfully developed a novel technique that introduces lower-cost CCT- and CRI-tuning cold WLEDs with a CRI of over 90 that of warm WLEDs by using 3D NCP CPhCs.

© 2013 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(230.5298) Optical devices : Photonic crystals

ToC Category:
Light-Emitting Diodes

Original Manuscript: April 26, 2013
Revised Manuscript: May 26, 2013
Manuscript Accepted: May 28, 2013
Published: June 6, 2013

Chun-Feng Lai, Chung-Chieh Chang, Ming-Jye Wang, and Mau-Kuen Wu, "CCT- and CRI-tuning of white light-emitting diodes using three-dimensional non-close-packed colloidal photonic crystals with photonic stop-bands," Opt. Express 21, A687-A694 (2013)

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