Abstract:
Implementations of the disclosure generally provide an improved pedestal heater for a processing chamber. The pedestal heater includes a temperature-controlled plate having a first surface and a second surface opposing the first surface. The temperature-controlled plate includes an inner zone comprising a first set of heating elements, an outer zone comprising a second set of heating elements, the outer zone surrounding the inner zone, and a continuous thermal choke disposed between the inner zone and the outer zone, and a substrate receiving plate having a first surface and a second surface opposing the first surface, the second surface of the substrate receiving plate is coupled to the first surface of the temperature-controlled plate. The continuous thermal choke enables a very small temperature gradient to be created and manipulated between the inner zone and the outer zone, allowing center-fast or edge-fast etching profile to achieve on a surface of the substrate.
Abstract:
A method and apparatus for processing a substrate are provided. The apparatus includes a pedestal and rotation member, both of which are moveably disposed within a processing chamber. The rotation member is adapted to rotate a substrate disposed in the chamber. The substrate may be supported by an edge ring during processing. The edge ring may selectively engage either the pedestal or the rotation member. In one embodiment, the edge ring engages the pedestal during a deposition process and the edge ring engages the rotation member during rotation of the substrate. The rotation of the substrate during processing may be discrete or continuous.