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Advanced Materials

Influence of Silver Doping on Electron Transport in Thin Films of PbSe Nanocrystals

Authors

  • Moon Sung Kang,

    1. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
    2. Department of Chemical Engineering, Soongsil University, Seoul, 156-743, Korea
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  • Ayaskanta Sahu,

    1. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
    2. Optical Materials Engineering Laboratory, ETH Zurich, Zurich, Switzerland
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  • C. Daniel Frisbie,

    Corresponding author
    1. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
    • Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
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  • David J. Norris

    Corresponding author
    1. Optical Materials Engineering Laboratory, ETH Zurich, Zurich, Switzerland
    • Optical Materials Engineering Laboratory, ETH Zurich, Zurich, Switzerland.
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Abstract

Field-effect transistors are fabricated from thin films of Ag-doped PbSe nanocrystals to analyze the influence of electronically active impurities on electrical transport in this important material for nanocrystal applications. Data is collected as a function of nanocrystal size, dopant concentration, and temperature. Changes in the Fermi level and transport parameters indicate that Ag is acting as a p-type dopant (acceptor).

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