Abstract:
An underlying interconnect level containing underlying W vias embedded in a dielectric material layer are formed on a semiconductor substrate. A metallic layer stack (360L, Figure 5) comprising, from bottom to top, a low-oxygen-reactivity metal layer (10), a bottom transition metal layer (20), a bottom transition metal nitride layer (30), an aluminum-copper layer (40), an optional top transition metal layer (50), and a top transition metal nitride layer (60). The metallic layer stack is lithographically patterned to form at least one aluminum-based metal line, which constitutes a metal interconnect structure. The low-oxygen- reactivity metal layer enhances electromigration resistance of the at least one aluminum-based metal line since formation of compound between the bottom transition metal layer and the dielectric material layer is prevented by the low-oxygen-reactivity metal layer, which does not interact with the dielectric material layer.
Abstract:
The disclosure relates generally to integrated circuits (IC), IC interconnects, and methods of fabricating the same, and more particularly, high performance inductors. The IC (10) includes at least one trench (20) within a dielectric layer (25) disposed on a substrate (30). The trench is conformally coated with a liner and seed layer (35), and includes an interconnect (40) within. The interconnect includes a hard mask (45) on the sidewalls of the interconnect.
Abstract:
Die Offenbarung betrifft allgemein integrierte Schaltungen (ICs), IC-Verbindungen und Verfahren zur Herstellung derselben und insbesondere Hochleistungsinduktoren. Die IC (10) weist mindestens einen Graben (20) innerhalb einer Dielektrikumsschicht (25) auf, die auf einem Substrat (30) angeordnet ist. Der Graben wird formangepasst mit einer Auskleidungs- und Keimschicht (35) beschichtet und weist eine Verbindung (40) darin auf. Die Verbindung weist eine Hartmaske (45) auf den Seitenwänden der Verbindung auf.