Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering
Author
Nizamoglu, S.
Erdem, T.
Sun X.W.
Demir, Hilmi Volkan
Date
2010Source Title
Optics Letters
Print ISSN
1469592
Volume
35
Issue
20
Pages
3372 - 3374
Language
English
Type
ArticleItem Usage Stats
134
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views
150
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downloads
Abstract
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.
Keywords
CdSe/ZnS core/shellColloidal quantum dots
Color rendering
Correlated color temperature
High color rendering index
High luminous efficacy
InGaN/GaN
Lighting applications
Nanophosphors
Optical radiations
Quantum Dot
Spectral quality
White LED
White light emitting diodes
Color
Luminance
Optical waveguides
Semiconductor quantum dots
Light emitting diodes
Permalink
http://hdl.handle.net/11693/22175Published Version (Please cite this version)
http://dx.doi.org/10.1364/OL.35.003372Collections
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