Electrical and Optical Properties of Amorphous Materials
Abstract
A very significant finding was that the standard method of preparing the amorphous forms of the Group V-VI compounds by vacuum evaporation from the compound is very unreliable from the compositional viewpoint. It appears probable that no data has ever been reported on truly 'Sb2Se3' amorphous films, despite considerable literature on the subject. Several approaches have been taken, or are under development, which have yielded amorphous Sb2Se3 films. Initial Mossbauer studies have shown that the Sb atoms in amorphous SbxSey (x < 2, y > 3) films differ in environment from the single crystal form and therefore appear to be amorphous rather than microcrystalline. Kramers-Kronig analysis of optical reflectivity data has been used extensively to analyze optical reflectivity data on single crystals and thin films. Highlights in the optical studies to date are: the band gap in Sb2Se3 appears to be due to a direct transition; plasma resonance frequencies can be accurately determined by thermoreflectance data; photon counter techniques show great promise in determining the critical points in band structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1970
- Accession Number
- AD0714029
Entities
People
- Charles Wood
Organizations
- Northern Illinois University