Single carbon nanotube schottky diode microwave rectifiers

E. D. Cobas, S M Anlage, M. S. Fuhrer

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14 Citations (Scopus)

Abstract

We report the fabrication of single and few-channel carbon nanotube (CNT) Schottky diodes on high-frequency compatible substrates using horizontally aligned CNT arrays and dissimilar metal contacts in a coplanar-waveguide geometry. Rectification of ac signals in the range of 100 MHz-40 GHz is examined and the observed cutoff frequencies are used to compute the Schottky junction capacitance of the devices, which is strongly CNT-length-dependent and appears dominated by stray capacitance between the CNT channel and metal electrode, in agreement with electrostatic simulations.

Original languageEnglish
Article number6018323
Pages (from-to)2726-2732
Number of pages7
JournalIEEE Transactions on Microwave Theory and Techniques
Volume59
Issue number10 PART 2
DOIs
Publication statusPublished - 2011
Externally publishedYes

Keywords

  • Carbon nanotubes (CNTs)
  • Impedance mismatch
  • Microwave rectification
  • Schottky diodes

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