Patent ID: 6468354
Filing Date: 2002-10-22
Classification: C23C,H01L

Abstract:
For use in a rapid thermal process chamber for processing semiconductor wafers, and of the type employing a radiant heat source on one side of said wafer for heating said wafer and sensor means on the opposite side of said wafer for sensing the temperature of said wafer, a rotatable wafer support, comprising:a unitary member having an upper, generally horizontal ring shaped section having a width â€œWâ€ , and including a surface extending radially inward for supporting the outer periphery of said wafer thereon, and a lower, generally vertical ring shaped section having a depth â€œDâ€ , and including a surface extending downwardly from and formed integrally with said upper section, the values of said width â€œWâ€  and said depth â€œDâ€  being within Â±20% of each other, said upper and lower sections being formed of a single, homogeneous piece of silicon carbide having a continuous coating of silicon thereover to cause said member to act as a radiation black body.