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Optics Letters

Optics Letters


  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2851–2851

Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering: comment

Guoxing He  »View Author Affiliations

Optics Letters, Vol. 36, Issue 15, pp. 2851-2851 (2011)

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This is a comment on a previous Letter [Opt. Lett. 35, 3372 (2010)]. The chromaticity coordinates of nanocrystal quantum dot (NQD)-integrated WLED1, WLED2, and WLED3 are out of the range of the chromaticity tolerance quadrangles of white light sources. So these NQD WLEDs do not satisfy the requirements recommended for general lighting with solid-state lighting products to ensure high-quality white light. Furthermore, correlated color temperatures of WLED2 and WLED3 should be 2682 and 2527 K , respectively, according to the chromaticity coordinates of WLED2 and WLED3 at 12 mA , not 2781 and 2390 K . The NQD-integrated WLED1 and WLED2 located in tolerance quadrangles are simulated by the changing spectral power of green-, yellow-, and orange-emitting NQDs. The simulation results are presented.

© 2011 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence
(160.4236) Materials : Nanomaterials

ToC Category:
Optical Devices

Original Manuscript: November 29, 2010
Revised Manuscript: February 25, 2011
Manuscript Accepted: February 25, 2011
Published: July 22, 2011

Guoxing He, "Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering: comment," Opt. Lett. 36, 2851-2851 (2011)

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