1 Ocak 2016 Dergi makalesi Açık Erişim

Akmehmet, Guliz Inan; Sturm, Saso; Bocher, Laura; Kociak, Mathieu; Ambrozic, Bojan; Ow-Yang, Cleva W.

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        "affiliation": "Sabanci Univ, Mat Sci & Engn Program, TR-34956 Istanbul, Turkey", 
        "name": "Akmehmet, Guliz Inan"
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      {
        "affiliation": "Jozef Stefan Inst, Dept Nanostruct Mat, Jamova Cesta 39, Ljubljana 1000, Slovenia", 
        "name": "Sturm, Saso"
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      {
        "affiliation": "Univ Paris 11, Lab Phys Solides, CNRS, UMR 8502, Batiment 510, F-91405 Orsay, France", 
        "name": "Bocher, Laura"
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      {
        "affiliation": "Univ Paris 11, Lab Phys Solides, CNRS, UMR 8502, Batiment 510, F-91405 Orsay, France", 
        "name": "Kociak, Mathieu"
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      {
        "affiliation": "Jozef Stefan Inst, Dept Nanostruct Mat, Jamova Cesta 39, Ljubljana 1000, Slovenia", 
        "name": "Ambrozic, Bojan"
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      {
        "name": "Ow-Yang, Cleva W."
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    "description": "Long persistence phosphors are promising materials for energy-saving applications, due to their ability to temporarily store and release light. While boron is known to dramatically extend the afterglow persistence to longer than 8 h in strontium aluminates, previous attempts to understand the role of boron neglected any nanoscale-related effects and have been inconclusive. Herein, nanoscale-resolved cathodoluminescence mapping is correlated with selected area electron diffraction and with energy dispersive x-ray spectroscopy analysis using a 2 angstrom-diameter probe. The salient aspect of this unique approach is that one can not only determine the elemental distribution in the phosphor microstructure, but more importantly, one can discriminate between the distributions of different divalent and trivalent luminescing ions. We demonstrate that the extremely long afterglow is due to the boron dopant via two key roles: ( 1) facilitating dominance of the long persistence phase during the microstructural evolution and ( 2) promoting more uniform distribution of the optically active, Eu2+ ion in the Sr2+ cation sublattice.", 
    "doi": "10.1111/jace.14188", 
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    "journal": {
      "issue": "6", 
      "pages": "2175-2180", 
      "title": "JOURNAL OF THE AMERICAN CERAMIC SOCIETY", 
      "volume": "99"
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    "publication_date": "2016-01-01", 
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    "title": "Structure and Luminescence in Long Persistence Eu, Dy, and B Codoped Strontium Aluminate Phosphors: The Boron Effect"
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