MULTICATHODE PVD SYSTEM FOR HIGH ASPECT RATIO BARRIER SEED DEPOSITION

• Main Authors: LI, Ming-Jui, PENMETHSA, Harish V
• Format: Patent
• Language: English
• Published: 25.07.2024
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Apparatus and methods for multi-cathode barrier seed deposition for high aspect ratio features in a physical vapor deposition (PVD) process are provided herein. In some embodiments, a PVD chamber includes a pedestal disposed within a processing region of the PVD chamber. The pedestal rotates with a workpiece on it. The PVD chamber includes a lid assembly includes a first target and a second target of a same target material, where a first surface of the first target defines a first zone of the processing region a first distance from the upper surface of the pedestal, and a second surface of the second target defines a second zone of the processing region a second distance from the plane of the upper surface of the pedestal. A system controller is configured to simultaneously control a first voltage bias for the first target and a second voltage bias for the second target.