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      Colloidal Nanocrystals Embedded in Macrocrystals: Robustness, Photostability, and Color Purity

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      Author(s)
      Otto, T.
      Mueller, M.
      Mundra, P.
      Lesnyak, V.
      Demir, Hilmi Volkan
      Gaponik N.
      Eychmuller, A.
      Date
      2012-09-14
      Source Title
      Nano Letters
      Print ISSN
      1530-6984
      Publisher
      American Chemical Society
      Volume
      12
      Issue
      10
      Pages
      5348 - 5354
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      The incorporation of colloidal quantum dots (QDs) into ionic crystals of various salts (NaCl, KCl, KBr, etc.) is demonstrated. The resulting mixed crystals of various shapes and beautiful colors preserve the strong luminescence of the incorporated QDs. Moreover, the ionic salts appear to be very tight matrices, ensuring the protection of the QDs from the environment and as a result providing them with extraordinary high photo- and chemical stability. A prototype of a white light-emitting diode (WLED) with a color conversion layer consisting of this kind of mixed crystals is demonstrated. These materials may also find applications in nonlinear optics and as luminescence standards.
      Keywords
      Quantum dots
      Nanocrystals
      Mixed crystals
      Composite
      Color conversion
      White led
      Permalink
      http://hdl.handle.net/11693/13199
      Published Version (Please cite this version)
      http://dx.doi.org/10.1021/nl3027444
      Collections
      • Department of Electrical and Electronics Engineering 3702
      • Department of Physics 2397
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
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