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      • Department of Electrical and Electronics Engineering
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      Enhanced spontaneous emission in semiconductor nanocrystal solids using resonant energy transfer for integrated devices

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      Author
      Nizamoğlu, Sedat
      Demir, Hilmi Volkan
      Date
      2008-11
      Source Title
      Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS 2008
      Publisher
      IEEE
      Pages
      587 - 588
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      Size-tuneable optical properties of semiconductor nanocrystal (NC) quantum dots make them attractive for a wide range of device applications. However, in these device applications, nanocrystals typically suffer from relatively low quantum efficiency (QE) when they are cast into solid form. To reduce the effect of this problem, we propose and demonstrate the enhancement of spontaneous emission in nanocrystal solids by recycling their trapped excitons through resonant nonradiative Forster energy transfer (ET) for hybrid integrated devices. For this purpose, we designed closely packed CdSe/ZnS core/shell nanocrystal emitters with an energy gradient of approximately 160 meV integrated on LEDs.
      Keywords
      Spontaneous emission
      Nanocrystals
      Solids
      Resonance
      Energy exchange
      Optical devices
      Stimulated emission
      Quantum dots
      Recycling
      Excitons
      Permalink
      http://hdl.handle.net/11693/26767
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/LEOS.2008.4688754
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      • Nanotechnology Research Center (NANOTAM) 1006
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