Graphene/Carbon Nanotube Cross-Junction Devices

ORAL

Abstract

We have built crossed carbon nanotube/graphene junctions from CVD graphene and aligned arrays of carbon nanotubes. Large-area single-layer graphene was grown on a copper film and transferred to silicon oxide, then lithographically patterned and electrically contacted. Highly aligned arrays of single-walled carbon nanotubes were CVD-grown on quartz and transferred to complete the devices. We probed these new geometries using electrical measurements, studied their optoelectronic response with scanning photocurrent microscopy, and explored the temperature and gate dependence of the junctions. We found that graphene acts as a very good electrode for carbon nanotubes, pointing to the possibility of creating fully-integrated, transparent, flexible transistors purely from carbon nanomaterials.

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Authors

  • Melina Blees

    Cornell University

  • Xiaodong Xu

    H. M. Randall Laboratory, The University of Michigan, Cornell University, University of Michigan

  • Arend van der Zande

    CCMR, Cornell University, Cornell University

  • Zhaohui Zhong

    University of Michigan, University of Michigan, Ann Arbor

  • Nathaniel Gabor

    Cornell University, Cornell University Physics

  • Phi Pham

    University of Colorado at Boulder

  • Paul McEuen

    CCMR, Cornell University, Cornell University, Laboratory of Atomic and Solid State Physics, Cornell University