Title :
Terahertz characterization of zinc oxide nanowires using parallel-plate waveguides
Author :
Kernan, F. ; Nadarajah, A. ; Higgins, J.A. ; Pejcinovic, B. ; Koenenkamp, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Portland State Univ., Portland, OR, USA
Abstract :
We present a new material parameter extraction method utilizing parallel-plate waveguides (PPWG) with terahertz time-domain spectroscopy (THz-TDS). It can be applied to natively grown samples as thin as a micron, it is repeatable and accurate, and it enables the characterization of thin films and nanostructures on conductive substrates for a variety of materials and growth conditions. The dielectric response and the complex conductivity are measured and fit with theoretic models for chemical-bath deposited zinc oxide nanowires.
Keywords :
II-VI semiconductors; electrical conductivity; nanowires; parallel plate waveguides; permittivity; terahertz wave spectra; wide band gap semiconductors; zinc compounds; ZnO; chemical-bath deposited zinc oxide nanowires; complex conductivity; conductive substrates; dielectric response; material parameter extraction method; natively grown samples; parallel-plate waveguides; terahertz characterization; terahertz time-domain spectroscopy; theoretic models; Conductivity; Dielectrics; Materials; Nanowires; Optical waveguides; Phonons; Zinc oxide; Chemical Bath Deposition; Drude-Smith Model; Nanostructures; Parallel-Plate Waveguide; Terahertz Time-Domain Spectroscopy; Transverse-Magnetic Mode;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144450
