Accession Number:

ADA339169

Title:

New World Vistas: Theory of Anion-Substituted Nitrogen Bearing III-V Alloys.

Descriptive Note:

Final rept. 1 Jul-31 Dec 97

Corporate Author:

SRI INTERNATIONAL MENLO PARK CA

Personal Author(s):

Report Date:

1997-12-31

Pagination or Media Count:

12.0

Abstract:

Band structure calculations of dilute alloys of nitrogen-rich GaNP and GaNAs were performed. Because of the large bond-length mismatch between nitrogen N and phosphorous P or arsenic As, enormous internal strains strongly inhibit the miscibility of the latter into the anion lattice. This report discusses the thermodynamic behavior of incorporation of P or As into the III-N lattice by calculating the miscibility gaps in the regular solution model. The band states show some remarkable behavior when small amounts of P or As are substituted for N resonances at the valence band edge exhibit characteristics which are somewhere between that of a hydrogenic defect and a propagating state one usually finds at the band edge of an alloy.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE