High Spatial Resolution Assessent of the Structure, Composition, and Electronic Properties of Nanowire Arrays

Abstract

We have employed transmission electron microscopy (TEM) and analytical electron microscopy to perform preliminary assessment of the structure, composition and electronic properties of nanowire arrays at high spatial resolution. The two systems studied were bismuth and bismuth telluride nanowire arrays in alumina (wire diameters 40nm), both of which are promising for thermoelectric applications. Imaging coupled with diffraction in the TEM was employed to determine the grain size in electrodeposited Bi2Te3 nanowires. In addition, a composition gradient was identified along the wires in a short region near the electrode by energy-dispersive x-ray spectroscopy. Electron energy loss spectroscopy combined with energy-filtered imaging in the TEM revealed the excitation energy and spatial variation of plasmons in bismuth nanowire arrays.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADP011027

Entities

People

  • A. L. Prieto
  • A. M. Stacy
  • M. S. Sander
  • R. Gronsky
  • Y. M. Lin

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Structures
  • Bismuth Tellurides
  • Charge Carriers
  • Chemical Compounds
  • Chemistry
  • Diffraction
  • Electrical Engineering
  • Electrodeposition
  • Electron Microscopes
  • Electron Microscopy
  • Grain Size
  • Materials
  • Materials Processing
  • Materials Science
  • Microscopy
  • Nanocomposites
  • Spectra

Fields of Study

  • Physics

Readers

  • Phased Array Antenna Design.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics