Hexagonal II-VI Structures by Substrate Bandgap Engineering
Abstract
A synthesis procedure was developed for bulk ZnMgSSe, using metallic Mg and Se. This is done in the growth crucible in the growth system; this reduces contamination from exposure to the laboratory ambient. A growth run with 12% Mg and 8% S (nominal) concentrations was done using our zone melting technique in a non-seeding crucible. A 45 deg cross-section was made by cleaving; it appeared that one grain was about half of the 26 mm (average) diameter boule. No twins were visible at all. It is, of course, desirable to have twin-free material, but, even more importantly, the lack of twins is a strong indication of hexagonal material, a major goal of the program.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 08, 1997
- Accession Number
- ADA330085
Entities
People
- Brian J. Fitzpatrick
- Maria C. Tamargo