Cathodoluminescence Studies of the Inhomogeneities in Sn-doped Ga2O3 Nanowires

Abstract

Cathodoluminescence real-color imaging and spectroscopy were employed to study the properties of Ga2O3 nanowires grown with different Sn/Ga ratios. The structures grown under Sn-rich conditions show large spectral emission variation, ranging from blue to red, with a green transition zone. Spectral emission changes correlate with changes in the chemical composition and structure found by energy dispersive spectroscopy and electron diffraction. A sharp transition from green to red emission correlates with a phase transition of -Ga2O3 to polycrystalline SnO2. The origin of the green emission band is discussed based on ab initio calculation results.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA549714

Entities

People

  • J. A. Freitas Jr.
  • L. Mazeina
  • S. I. Maximenko
  • Sharka M. Prokes
  • Victor M. Bermudez
  • Y. N. Picard

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Band Gaps
  • Cathodoluminescence
  • Chemical Composition
  • Diameters
  • Diffraction
  • Energy Bands
  • Heterojunctions
  • Low Temperature
  • Luminescence
  • Materials
  • Nanowires
  • Optical Properties
  • Phase Transformations
  • Semiconductors
  • Spectra
  • Spectroscopy
  • Transitions

Fields of Study

  • Materials science

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Quantum Chemistry
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics