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      Color-converting combinations of nanocrystal emitters for warm-white light generation with high color rendering index

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      Author
      Nizamoglu, S.
      Zengin, G.
      Demir, Hilmi Volkan
      Date
      2008-01-22
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Electronic ISSN
      1077-3118
      Publisher
      American Institute of Physics
      Volume
      92
      Issue
      3
      Pages
      031102-1 - 031102-3
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Warm-white light emitting diodes with high color rendering indices are required for the widespread use of solid state lighting especially indoors. To meet these requirements, we propose and demonstrate warm-white hybrid light sources that incorporate the right color-converting combinations of CdSe/ZnS core-shell nanocrystals hybridized on InGaN/GaN LEDs for high color rendering index. Three sets of proof-of-concept devices are developed to generate high-quality warm-white light with (1) tristimulus coordinates (x,y)=(0.37,0.30), luminous efficacy (LE)=307 lm/W, color rending index (CR)=82.4, and correlated color temperature (CCT)=3228 K; (2) (x,y)=(0.38,0.31), LE=323 lm/W, CRI=81.0, and CCT=3190 K; and (3) (x,y)=(0.37,0.30), LE=303 lm/W, CRI=79.6, and CCT=1982 K.
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      http://hdl.handle.net/11693/11546
      Published Version (Please cite this version)
      https://doi.org/10.1063/1.2833693
      Collections
      • Department of Electrical and Electronics Engineering 3613
      • Department of Physics 2345
      • Institute of Materials Science and Nanotechnology (UNAM) 1858
      • Nanotechnology Research Center (NANOTAM) 1038
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