Accession Number : AD0284015

Title :   TEMPERATURE DEPENDENCE OF LINE STRUCTURE OF CADMIUM SULFIDE EDGE EMISSION

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : ANDERS,WILLIAM ALISON

Report Date : MAY 1962

Pagination or Media Count : 1

Abstract : The temperature dependence of the line structure in Cds edge emission stimulated by UV light was investigated from 4.2 K to 367 K. The spectral shift of the fine structure observed at 4.2 K was followed to 77 K where the individual lines broadened and merged into groups. The temperature dependence of the primary line groups is a linear function of temperature above 220 K with coefficients of change of 1.27 and 1.8 Angstroms degree K for the lines observed. Below 220 K the dependence departs from linearity and approaches its limiting value more rapidly with decreasing temperature. Striations, due to variations of the luminescent properties over the surface of the crystal, were observed in emission spectra. These striations were used to advantage in the resolution of the various broad overlapping bands found in the emission spectrum at higher temperature. Two individual bands were resolved in the room temperature spectrum with peaks at 5090 and 5275 Angstroms. (Author)

Descriptors :   *CADMIUM COMPOUNDS, *FLUORESCENCE, *SEMICONDUCTORS, *SULFIDES, CRYSTALS, LOW TEMPERATURE RESEARCH, PHOTOCONDUCTIVITY, PHOTOELECTRIC EFFECT, TEMPERATURE, TEST EQUIPMENT, ULTRAVIOLET RADIATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE