Patent ID: 8703580

Claim:
A manufacturing method for manufacturing a silicon on insulator (SOI) wafer by bonding a single crystal silicon wafer to a transparent insulation substrate, and thereafter making the single crystal silicon wafer to be thinned to form an SOI layer on the transparent insulation substrate, the manufacturing method comprising: forming an ion injection layer within the single crystal silicon wafer, by injecting at least one of a hydrogen ion and a rare gas ion from a surface of the single crystal silicon wafer; placing the single crystal silicon wafer and/or the transparent insulation substrate in a chamber to which atmospheric air is introduced; introducing a plasma gas in the chamber; generating high frequency plasma to convert the oxygen in the atmospheric air into ozone, so as to process a surface of the single crystal silicon wafer and/or a surface of the transparent insulation substrate with ozone; bonding the ion injection surface of the single crystal silicon wafer to a surface of the transparent insulation substrate, by bringing them into close contact with each other at room temperature, with the processed surface(s) as bonding surface(s); raising a bonding strength by performing thermal processing to the bonded wafer under a temperature of 100-300° C.; and forming an SOI layer on the transparent insulation substrate, by mechanically peeling the single crystal silicon wafer by giving an impact to the ion injection layer.