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      Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering

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      Author
      Nizamoglu, S.
      Erdem, T.
      Sun X.W.
      Demir, Hilmi Volkan
      Date
      2010
      Source Title
      Optics Letters
      Print ISSN
      1469592
      Volume
      35
      Issue
      20
      Pages
      3372 - 3374
      Language
      English
      Type
      Article
      Item Usage Stats
      134
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      150
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      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/shell
      Colloidal 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/11693/22175
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OL.35.003372
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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