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      Förster resonance energy transfer enhanced color-conversion using colloidal semiconductor quantum dots for solid state lighting

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      Author(s)
      Nizamoglu, S.
      Demir, Hilmi Volkan
      Date
      2009-10-15
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Publisher
      American Institute of Physics
      Volume
      95
      Issue
      15
      Pages
      151111-1 - 151111-3
      Language
      English
      Type
      Article
      Item Usage Stats
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      86
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      Abstract
      In this paper, we present Förster resonance energy transfer (FRET)-enhanced color-conversion using colloidal semiconductor quantum dot nanocrystals (NCs) to make reddish-orange light-emitting diodes for use in ultraefficient solid state lighting. To achieve FRET enhancement at 614 nm, we use an energy gradient hybrid structure made of cyan- and orange-emitting CdSe/ZnS NCs (λPL =492 and 588 nm in solution, respectively). This enables recycling of trapped excitons using FRET and achieves a relative quantum efficiency enhancement of 15.1% in reddish-orange full color-conversion for the integrated hybrid cyan-orange NC layer with respect to the case of full color-conversion using only orange NCs without FRET.
      Keywords
      CdSe/ZnS
      Colloidal semiconductors
      Energy gradients
      Full color
      Hybrid structure
      Quantum dot
      Resonance energy transfer
      Solid state lighting
      Trapped exciton
      Color
      Energy transfer
      Light emitting diodes
      Lighting
      Optical waveguides
      Resonance
      Semiconductor diodes
      Semiconductor quantum dots
      Permalink
      http://hdl.handle.net/11693/22586
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3222902
      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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