Patent ID: 6269765
Filing Date: 2001-08-07
Classification: C23C,H01J

Abstract:
A plasma treatment system for implantation, said system comprising:a chamber in which a plasma is generated in;a susceptor having a susceptor face disposed in said chamber to support a substrate comprising a substrate face;a perforated shield disposed adjacent to and coplanar with said susceptor for modifying an electric field for accelerating particles toward said substrate face, said perforated shield tending to linearize electric field lines along said substrate face to create a more uniform distribution of particles to be implanted into a depth of said substrate; anda collection device disposed underlying said perforated shield to collect particles that traverse through said perforated shield, said collection device being at a potential to attract said particles without substantially influencing said linearized electric field, said collection device also preventing a portion of said particles from depositing onto said substrate face.