To suppress contamination and secondary contamination in a semiconductor device due to a group IV element Si, which becomes a contaminant in a manufacturing method of the semiconductor device including Si and the group IV element except Si.
A Si/SiGe film formed on the rear face of a semiconductor wafer is removed by wet etching right after the Si/SiGe film including contaminants is formed by epitaxial growth, or dummy run using a container is performed after the Si/SiGe film is heated in the container. Secondary contamination via a stage where the wafer is treated, a robot arm or a pair of vacuum tweezers and the contamination of the container also used in a manufacturing process of the semiconductor device which does not include the group IV element except Si can be suppressed.
ONISHI TERUTO
ASAI AKIRA
AOKI NARITSUYO
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