Accession Number : AD0267944

Title :   Study of the Edge Emission of Cadmium Sulphide and Silicon Bombarded by Electrons.

Corporate Author : LABORATOIRE D'INFRA ROUGE TECHNIQUE ET APPLIQUE GIF-SUR-YVETTE (FRANCE)

Report Date : 30 SEP 1961

Pagination or Media Count : 1

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)

Descriptors :   CADMIUM COMPOUNDS, CRYSTALS, ELECTRON IRRADIATION, ELECTRON TRANSITIONS, INFRARED SPECTROPHOTOMETERS, PHOTOELECTRIC EFFECT, PHOTOMULTIPLIER TUBES, POTENTIOMETERS, RADIATION EFFECTS, SECONDARY EMISSION, SEMICONDUCTORS, SILICON, SOLID STATE PHYSICS, SULFIDES, TEST EQUIPMENT, THEORY, ZINC COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE