Ultraviolet Photoelectron Spectra of Gallium Arsenide Clusters

Abstract

The ultraviolet photoelectron spectra (UPS) of mass-selected negative gallium arsenide cluster ions in the 2-50 atom size range was measured with a photon energy of 7.9 eV. The measured photodetachment thresholds displayed a strong even/odd oscillation through the largest clusters in this range, suggesting the presence of a substantial HOMO-LUMO gap in the corresponding neutral clusters which evolves to the band gap of bulk GaAs crystals. Keywords: Surface chemistry; Ultraviolet photoelectron spectra; Gallium arsenide clusters.

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Document Details

Document Type
Technical Report
Publication Date
Jul 23, 1990
Accession Number
ADA224927

Entities

People

  • C. Jin
  • J. Conceicao
  • K. J. Taylor
  • R. E. Smalley

Organizations

  • Rice University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atomic Energy Levels
  • Atoms
  • Band Gaps
  • Chemical Compounds
  • Chemistry
  • Energy Bands
  • Energy Levels
  • Gallium Arsenides
  • Ground State
  • Military Research
  • Photoelectron Spectra
  • Photoelectrons
  • Semiconductors
  • Spectra
  • Spectroscopy
  • United States
  • Universities

Readers

  • Molecular Photonics/Laser Physics
  • Quantum Chemistry
  • Solar Photovoltaics and Thermoelectric Devices.

Technology Areas

  • Microelectronics