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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 3 — Jan. 30, 2012
  • pp: 3275–3295

Computational study of power conversion and luminous efficiency performance for semiconductor quantum dot nanophosphors on light-emitting diodes

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


Optics Express, Vol. 20, Issue 3, pp. 3275-3295 (2012)
http://dx.doi.org/10.1364/OE.20.003275


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Abstract

We present power conversion efficiency (PCE) and luminous efficiency (LE) performance levels of high photometric quality white LEDs integrated with quantum dots (QDs) achieving an averaged color rendering index of ≥90 (with R9 at least 70), a luminous efficacy of optical radiation of ≥380 lm/Wopt a correlated color temperature of ≤4000 K, and a chromaticity difference dC <0.0054. We computationally find that the device LE levels of 100, 150, and 200 lm/Welect can be achieved with QD quantum efficiency of 43%, 61%, and 80% in film, respectively, using state-of-the-art blue LED chips (81.3% PCE). Furthermore, our computational analyses suggest that QD-LEDs can be both photometrically and electrically more efficient than phosphor based LEDs when state-of-the-art QDs are used.

© 2012 OSA

OCIS Codes
(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

ToC Category:
Optical Devices

History
Original Manuscript: November 28, 2011
Revised Manuscript: January 18, 2012
Manuscript Accepted: January 25, 2012
Published: January 27, 2012

Citation
Talha Erdem, Sedat Nizamoglu, and Hilmi Volkan Demir, "Computational study of power conversion and luminous efficiency performance for semiconductor quantum dot nanophosphors on light-emitting diodes," Opt. Express 20, 3275-3295 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-3-3275


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