MULTILAYER OHMIC CONTACTS ON CDS.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1966
- Accession Number
- AD0636420
Entities
People
- Karl W. Boer
- Robert B. Hall
Organizations
- University of Delaware