New World Vistas: Theory of Anion-Substituted Nitrogen Bearing III-V Alloys.
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1997
- Accession Number
- ADA339169
Entities
People
- Van Schilfgaarde
Organizations
- SRI International