Study of the Edge Emission of Cadmium Sulphide and Silicon Bombarded by Electrons.
Abstract
Mixed cadmium and zinc sulfides were obtained with a view to testing whether a coincidence is still observed between the absorption edge of the spectrum and the wavelength of the light emitted. The main results are those obtained from studies at liquid air temperature. On certain samples a complex light is obtained, containing a yellow band, a green band and a blue band at about 4900 angstroms, this wavelength corresponding to that of the absorption edge at the same temperature. On other crystals however, this band is very weak or disappears completely. In these cases only the green band, fairly complex in structure, and the yellow band appear. All the characteristics of the phenomenon appear to indicate that the light observed is due to a direct return from the conduction band to the valence band, or to a return from a level very close to the conduction band to the valence band. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1961
- Accession Number
- AD0267944