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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 1 — Jan. 4, 2010
  • pp: 340–347

A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores

Talha Erdem, Sedat Nizamoglu, Xiao Wei Sun, and Hilmi Volkan Demir  »View Author Affiliations

Optics Express, Vol. 18, Issue 1, pp. 340-347 (2010)

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We report a photometric study of ultra-efficient light emitting diodes (LEDs) that exhibit superior color rendering index (CRI) and luminous efficacy of optical radiation (LER) using semiconductor quantum dot nanocrystal (NC) luminophores. Over 200 million systematically varied NC-LED designs have been simulated to understand feasible performance in terms of CRI vs. LER. We evaluated the effects of design parameters including peak emission wavelength, full-width-at-half-maximum, and relative amplitudes of each NC color component on LED performance. Warm-white LEDs with CRI >90 and LER >380 lm/W at a correlated color temperature of 3000 K are shown to be achieved using nanocrystal luminophores.

© 2009 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(230.3670) Optical devices : Light-emitting diodes
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(250.0250) Optoelectronics : Optoelectronics

ToC Category:
Optical Devices

Original Manuscript: October 27, 2009
Revised Manuscript: November 20, 2009
Manuscript Accepted: November 20, 2009
Published: December 24, 2009

Talha Erdem, Sedat Nizamoglu, Xiao Wei Sun, and Hilmi Volkan Demir, "A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores," Opt. Express 18, 340-347 (2010)

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