Accession Number : AD0636420

Title :   MULTILAYER OHMIC CONTACTS ON CDS.

Descriptive Note : Technical rept.

Corporate Author : DELAWARE UNIV NEWARK DEPT OF PHYSICS

Personal Author(s) : Boer, Karl W. ; Hall,Robert B.

Report Date : JUL 1966

Pagination or Media Count : 22

Abstract : A multilayer technique is proposed for evaporation of ohmic contacts onto CdS which does not change their electrical properties after heat treatment up to 350C. This technique consists of a sequential evaporation of a preparative layer, an active metal and possible a covering metal. The Ti (preparative)-A1 (active)-Pt (cover) sequence was found most successful. All of the more than forty evaporations investigated -on CdS single crystals, or on evaporated recrystallized layers- showed ohmic characteristics between 2 mV and 200 V and showed generation-recombination noise above (at most) 500 Hz. The electrical properties of the contacts did not markedly change after vacuum heat treatment up to 350C. (Author)

Descriptors :   (*SEMICONDUCTOR DEVICES, *ELECTRIC TERMINALS), (*CADMIUM COMPOUNDS, SULFIDES), CIRCUIT INTERCONNECTIONS, ELECTRODES, VAPOR PLATING, TITANIUM, ALUMINUM, PLATINUM, EVAPORATION, ELECTRICAL PROPERTIES, LAMINATES

Subject Categories : Electrical and Electronic Equipment
      Laminates and Composite Materials
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE