Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering
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Warm-white LEDs (WLEDs) with high spectral quality and efficiency are required for lighting applications, but current experimental performances are limited. We report on nanocrystal quantum dot (NQD) hybridized WLEDs with high performance that exhibit a high luminous efficacy of optical radiation exceeding 350 lm/Wopt and a high color rendering index close to 90 at a low correlated color temperature <3000 K. These spectrally engineered WLEDs are obtained using a combination of CdSe/ZnS core/shell NQD nanophosphors integrated on blue InGaN/GaN LEDs. © 2010 Optical Society of America.
Colloidal quantum dots
Correlated color temperature
High color rendering index
High luminous efficacy
White light emitting diodes
Semiconductor quantum dots
Light emitting diodes
Published Version (Please cite this version)http://dx.doi.org/10.1364/OL.35.003372
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