Suszeptor und Einrichtung zur Herstellung eines Epitaxie-Wafers

摘要

A susceptor capable of reducing unevenness in a film-thickness of an epitaxial film on an outer surface of a substrate wafer and a manufacturing apparatus of an epitaxial wafer are provided. The susceptor includes a wafer placement and a peripheral portion. The wafer placement is greater in size than the substrate wafer W and substantially disc-shaped. The peripheral portion is substantially in a ring-plate shape and includes: an inner circumference standing in a fashion surrounding a peripheral portion of the wafer placement; and an upper surface outwardly extending from an upper end of the inner circumference in parallel to the placement surface of the wafer placement. In the chemical vapor deposition control unit, an inner circumference has a curvature substantially similar to a curvature of the inner circumference of the peripheral portion, and the upper surface is leveled with the upper surface) of the peripheral portion. The chemical vapor deposition control unit is made of SiO2 which is less reactive with a reaction gas than a SiC film.