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Parallel arrays of Schottky barrier nanowire field effect transistors: Nanoscopic effects for macroscopic current output

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Abstract

We present novel Schottky barrier field effect transistors consisting of a parallel array of bottom-up grown silicon nanowires that are able to deliver high current outputs. Axial silicidation of the nanowires is used to create defined Schottky junctions leading to on/off current ratios of up to 106. The device concept leverages the unique transport properties of nanoscale junctions to boost device performance for macroscopic applications. Using parallel arrays, on-currents of over 500 μA at a source-drain voltage of 0.5 V can be achieved. The transconductance is thus increased significantly while maintaining the transfer characteristics of single nanowire devices. By incorporating several hundred nanowires into the parallel array, the yield of functioning transistors is dramatically increased and deviceto-device variability is reduced compared to single devices. This new nanowirebased platform provides sufficient current output to be employed as a transducer for biosensors or a driving stage for organic light-emitting diodes (LEDs), while the bottom-up nature of the fabrication procedure means it can provide building blocks for novel printable electronic devices.

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Authors and Affiliations

  1. Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, Dresden, 01062, Germany

    Sebastian Pregl, Daijiro Nozaki, Jens Kunstmann, Larysa Baraban & Gianaurelio Cuniberti

  2. NaMLab GmbH, Dresden, 01187, Germany

    Sebastian Pregl, Walter M. Weber & Thomas Mikolajick

  3. Fraunhofer Institute IZFP Dresden, Dresden, 01109, Germany

    Joerg Opitz

  4. Institute for Semiconductors and Microsystems Technology, TU Dresden, Dresden, 01187, Germany

    Thomas Mikolajick

  5. Division of IT Convergence Engineering, POSTECH, Pohang, Korea

    Gianaurelio Cuniberti

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  1. Sebastian Pregl
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  2. Walter M. Weber
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Correspondence to Walter M. Weber or Larysa Baraban.

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Pregl, S., Weber, W.M., Nozaki, D. et al. Parallel arrays of Schottky barrier nanowire field effect transistors: Nanoscopic effects for macroscopic current output. Nano Res. 6, 381–388 (2013). https://doi.org/10.1007/s12274-013-0315-9

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  • DOI: https://doi.org/10.1007/s12274-013-0315-9

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