SEMICONDUCTOR DEVICE MANUFACTURING METHOD AND SEMICONDUCTOR DEVICE

摘要

A semiconductor device manufacturing method capable of preventing characteristic degradation caused by surface roughness of a wafer by fully preventing the surface roughness in a heat treatment process, and a semiconductor device whose characteristic degradation caused by surface roughness is prevented. A method for manufacturing a MOSFET as a semiconductor device comprises a step of preparing a wafer (3) made of silicon carbide, and an activation annealing step of performing activation annealing by heating the wafer (3). In the activation annealing step, the wafer (3) is heated in an atmosphere containing silicon carbide vapor generated from a SiC piece (61) that is a generation source different from the wafer (3).