Accession Number : ADA187591

Title :   Nonmonotonic Evolution and Thermodynamic Trends at Metal/(Hg,Cd)Te Interfaces: Yb/Hg0.78Cd0.22Te.

Descriptive Note : Interim rept. 1 Aug 86-31 Aug 87,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF CHEMICAL ENGINEERING AND MATERIALS SCIENCE

Personal Author(s) : Peterman, D J ; Raisanen, A ; Chang, S ; Philip, P ; Wall, A

PDF Url : ADA187591

Report Date : 23 Oct 1987

Pagination or Media Count : 20

Abstract : The microscopic interaction of cleaved HgO.78Cd0.22Te surfaces with the highly reactive rare-earth Yb was studied by use of photoemission spectroscopy and synchrotron radiation. We compare the results with those of our previous investigation of Sm/(Hg,Cd)Te interface formation. Both overlayers exhibit a dramatic recovery of the Hg concentration at the interface after the first stage of metal-Te reaction. However, differences in valency between Sm and Yb develop during metal deposition and lead to differences in interface morphology. Keywords: Interface reactivity, Metal semiconductor interfaces, Mercury, Cadmium tellurides.

Descriptors :   *CADMIUM TELLURIDES, *MERCURY, *SEMICONDUCTORS, *YTTERBIUM, *SURFACE REACTIONS, DEPOSITION, EVOLUTION(GENERAL), INTERACTIONS, INTERFACES, METALS, MICROSCOPY, MORPHOLOGY, PATTERNS, PHOTOELECTRIC EMISSION, RADIATION, REACTIVITIES, SPECTROSCOPY, SYNCHROTRONS, THERMODYNAMICS, HEAT OF FORMATION, HEAT OF SOLUTION

Subject Categories : Solid State Physics
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE