Accession Number : AD0617923

Title :   OPTICAL PROPERTIES OF CDSE AND ZNO SINGLE CRYSTALS.

Descriptive Note : Master's thesis,

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

Personal Author(s) : DeWitt,John Sherman

Report Date : MAY 1965

Pagination or Media Count : 104

Abstract : The optical properties of CdSe and ZnO single crystals have been determined from reflectivity measurements in the range of photon energies 2.5 - 14 electron volts. The measurements were made in a one meter vacuum monochromator using a hydrogen emission source. The crystals were grown from the vapor phase and consisted of platelets (CdSe) and bulk prisms (ZnO). The optical constants, n and k, and the real and imaginary parts of the dielectric constant were derived from the reflectivity measurements by a Kramers-Kronig analysis. The observed spectrum of CdSe is in good agreement with previously reported results of Cardona. The observed ZnO spectrum corressponds with similar results reported for other II-VI wurtzite semiconductors. The peaks have been interpreted as direct interband transitions in terms of an analogous zinc-blende energy band structure. (Author)

Descriptors :   (*SEMICONDUCTORS, SINGLE CRYSTALS), (*CADMIUM ALLOYS, SELENIUM ALLOYS), (*ZINC COMPOUNDS, OXIDES), (*SINGLE CRYSTALS, OPTICAL PROPERTIES), REFLECTION, DIELECTRIC PROPERTIES, ELECTRON TRANSITIONS, ATOMIC ENERGY LEVELS

Distribution Statement : APPROVED FOR PUBLIC RELEASE