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      • Department of Electrical and Electronics Engineering
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      White emitting CdS quantum dot nanoluminophores hybridized on near-ultraviolet LEDs for high-quality white light generation and tuning

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      Author(s)
      Nizamoglu, S.
      Mutlugun, E.
      Akyuz, O.
      Perkgoz, N. K.
      Demir, Hilmi Volkan
      Liebscher, L.
      Sapra, S.
      Gaponik N.
      Eychmüller A.
      Date
      2008
      Source Title
      New Journal of Physics
      Electronic ISSN
      1367-2630
      Publisher
      Institute of Physics Publishing Ltd.
      Volume
      10
      Pages
      023026-9 - 023026-1
      Language
      English
      Type
      Article
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      Abstract
      To generate white light using semiconductor nanocrystal (NC) quantum dots integrated on light emitting diodes (LEDs), multiple hybrid device parameters (emission wavelengths of the NCs and the excitation platform, order of the NCs with different sizes, amount of the different types of NCs, etc) need to be carefully designed and properly implemented. In this study, we introduce and demonstrate white LEDs based on simple device hybridization using only a single type of white emitting CdS quantum dot nanoluminophores on near-ultraviolet LEDs. Here we present their design, synthesis-growth, fabrication and characterization. With these hybrid devices, we achieve high color rendering index (>70), despite using only a single NC type. Furthermore, we conveniently tune their photometric properties including the chromaticity coordinates, correlated color temperature, and color rendering index with the number of hybridized nanoluminophores in a controlled manner.
      Permalink
      http://hdl.handle.net/11693/23202
      Published Version (Please cite this version)
      http://doi.org/10.1088/1367-2630/10/2/023026
      Collections
      • Department of Electrical and Electronics Engineering 3702
      • Department of Physics 2397
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
      • Nanotechnology Research Center (NANOTAM) 1063
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