Journal
OPTICS EXPRESS
Volume 20, Issue 3, Pages 3275-3295Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.003275
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Funding
- TUBITAK [EEEAG 109E002, EEEAG 109E004, EEEAG 110E010, EEEAG 110E217]
- TUBA-GEBIP
- TUBITAK-BIDEB
- [NRF-CRP6-2010-02]
- [NRF RF 2009-09]
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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/W-opt 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/W-elect 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. (C) 2012 Optical Society of America
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