Accession Number : ADA188013

Title :   Ytterbium Monolayer Diffusion Barriers at Hg(1-x)CD(x)Te/Al Junctions.

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) : Franciosi, A ; Raisanen, A ; Wall, A ; Chang, S ; Philip, P

PDF Url : ADA188013

Report Date : 23 Oct 1987

Pagination or Media Count : 14

Abstract : Single layers of Yb at the Hg1-xCdxTe(110)/A1 interface prevent A1-Te reaction and dramatically increase the Hg concentration at the interface. The interlayer-induced change in atomic interdiffusion results in an increase of over two orders of magnitude in the Hg/Te ratio in the junction region. Semi-empirical calculations of thermodynamic parameters following Miedema's model suggest that other rare earths should also act as effective diffusion barriers at Hg2-XCdXTe/reactive metal junctions. Keywords: Interface reactivity, Diffusion barriers, Metal semiconductor interfaces, Mercury compounds, Cadmium tellurides.

Descriptors :   *CADMIUM TELLURIDES, *MERCURY COMPOUNDS, *YTTERBIUM, BARRIERS, DIFFUSION, INTERFACES, JUNCTIONS, LAYERS, METALS, RARE EARTH COMPOUNDS, RATIOS, REACTIVITIES, SEMICONDUCTORS

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE