Get access

Asymmetric leakage in (Ba, Sr)TiO3 nanoparticle/parylene-C composite capacitors

Authors

  • Shyuan Yang,

    Corresponding author
    1. Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    • Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    Search for more papers by this author
  • Brian R. Tull,

    1. Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    Search for more papers by this author
  • Nadia K. Pervez,

    1. Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    Search for more papers by this author
  • Limin Huang,

    1. Department of Chemistry, City University of New York, City College, 1131 Marshak Building, New York, New York 10031
    Search for more papers by this author
  • Eli S. Leland,

    1. Department of Chemical Engineering, City University of New York, City College, 160 Convent Avenue, Steinman Hall 335, City College of New York, New York, New York 10031
    Search for more papers by this author
  • Daniel A. Steigart,

    1. Department of Chemical Engineering, City University of New York, City College, 160 Convent Avenue, Steinman Hall 335, City College of New York, New York, New York 10031
    Search for more papers by this author
  • Stephen O'Brien,

    1. Department of Chemistry, City University of New York, City College, 1131 Marshak Building, New York, New York 10031
    Search for more papers by this author
  • Ioannis Kymissis

    Corresponding author
    1. Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    • Department of Electrical Engineering, Columbia University, 1300 S. W. Mudd Building, 500 West 120th Street, New York, New York 10027
    Search for more papers by this author

Abstract

Nanoparticle polymer composite capacitors have been examined for some time as a route to high performance, printable capacitors. One approach to creating these composites is to use a particle film together with vapor deposited polymers, which can yield high performance, but also forms a structurally asymmetric device. The performance of a nanoparticle (Ba, Sr)TiO3 (BST)/parylene-C composite capacitor is compared to that of a nanoparticle BST capacitor without the polymer layer under both directions of bias. The composite device shows a five orders of magnitude improvement in the leakage current under positive bias of the bottom electrode relative to the pure-particle device, and four orders of magnitude improvement when the top electrode is positively biased. The voltage tolerance of the device is also improved and asymmetric (44 V vs. 28 V in bottom and top positive bias, respectively). This study demonstrates the advantage of this class of composite device construction, but also shows that proper application of the device bias in this type of asymmetrical system can yield an additional benefit. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2013

Get access to the full text of this article

Ancillary