Cross-reference collection directed to materials which supply a foreign substance for incorporation, in very minor, "impurity" amounts, in an element, compound or composition to impart a desired property thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62.3, for barrier layer device compositions and processes for making them, which processes usually include doping.
SEE OR SEARCH CLASS
206, Special Receptacle or Package,
524+, for a package containing a chemical.
420, Alloys or Metallic Compositions,
590, for general processes of preparing alloys. 438, Semiconductor Device Manufacturing: Process,
542+, for processes of diffusing a conductivity modifying dopant into a semiconductor region.
