Accession Number : AD0684160

Title :   INFRARED MEASUREMENTS ON CdS THIN FILMS DEPOSITED ON ALUMINUM,

Corporate Author : PARIS UNIV (FRANCE) LABORATOIRE DE PHYSIQUE DES SOLIDES

Personal Author(s) : Proix,F. ; Balkanski,M.

Report Date : 1969

Pagination or Media Count : 24

Abstract : The reflectivity spectra of three CdS thin films (thickness = 0.086 and 0.66 micrometers) deposited on aluminium have been determined at room temperature. The measurements were carried out in the spectral range from 180 to 740 cm(-1) at an incidence of 45 deg, for light polarized with the electric field in the plane of incidence. A small absorption peak is observed near omega sub T0 for the thicker samples, and a much stronger absorption peak near omega sub T0 for all samples. The results are analysed in terms of the theory of Fuchs and Kliewer. The frequencies of the peaks and the partial widths associated with the virtual modes are in very good agreement with the theory. It is also found that the anharmonic width of the peaks is much larger than in CdS single crystals. (Author)

Descriptors :   (*SEMICONDUCTING FILMS, CADMIUM SULFIDES), (*CADMIUM SULFIDES, INFRARED RADIATION), PHONONS, REFLECTIVITY, ABSORPTION, FRANCE

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE