Accession Number:

ADA224927

Title:

Ultraviolet Photoelectron Spectra of Gallium Arsenide Clusters

Descriptive Note:

Interim rept.

Corporate Author:

RICE UNIV HOUSTON TX DEPT OF CHEMISTRY

Report Date:

1990-07-23

Pagination or Media Count:

18.0

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 evenodd 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.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE