Patent ID: 7816765

Claim:
A silicon epitaxial wafer, obtained by growing a silicon epitaxial layer on a surface of a silicon wafer having a diameter of at least 300 mm produced by slicing a silicon single crystal ingot doped with boron and germanium grown by the Czochralski method, wherein boron is doped to be at a concentration of 8.5×10 18 (atoms/cm 3 ) or higher, and germanium is doped to satisfy a relational expression (formula 1) below:  3 × ( 4.64 × 10 - 24 · [ Ge ] - 2.69 × 10 - 23 · [ B ] ) 5.43 × r 2 × t epi ( t sub ) 2  ≤ 26. [ Formula ⁢ ⁢ 1 ]