To provide a method of optimally treating a semiconductor substrate.
A temperature response of a substrate is controlled during a heat-up phase or a cool-down phase, or during both the phases. This reduces the thermal budget of the substrate and improves the quality and performance of the devices formed on the substrate. Particularly, by controlling the rate of heat transfer between the substrate and a thermal reservoir (e.g. water-cooled reflector plate assembly), the temperature response of the substrate can be controlled during the thermal process. The rate of heat transfer can be changed by changing the thermal conductivity between the substrate and the thermal reservoir, by changing the emissivity of a surface of the thermal reservoir, or by changing a distance between the substrate and the thermal reservoir. The thermal conductivity can be changed by changing the characteristics of a thermal transport medium (e.g. purge gas) located between the substrate and the thermal reservoir. Far example, the thermal conductivity may be changed by changing the composition of the purge gas or the pressure of the purge gas between the substrate and the thermal reservoir.
BALAKRISHNA AJIT
BIERMAN BENJAMIN B
HAAS BRIAN L
JENNINGS DEAN
ADERHOLD WOLFGANG R
RAMAMURTHY SUNDAR
MAYAR ABHILASH
JPH0869977A | 1996-03-12 | |||
JPH0997830A | 1997-04-08 | |||
JPH02240923A | 1990-09-25 | |||
JPH10144628A | 1998-05-29 | |||
JPH07307258A | 1995-11-21 |
WO2000016380A1 | 2000-03-23 |
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