Patent ID: 6599816
Filing Date: 2003-07-29
Classification: C30B,H01L

Abstract:
A method of manufacturing a silicon epitaxial wafer comprising the steps of: producing a silicon single crystal having a nitrogen concentration of at least 1Ã—1012 atoms/cm3 and an oxygen concentration in a range of 10-18Ã—1017 atoms/cm3 (old ASTM);slicing a silicon wafer from said silicon single crystal; growing an epitaxial film on the surface of the silicon wafer; and conducting an isothermal annealing at a temperature in a range of 800-1,100Â° C. after growing said epitaxial film, so as to satisfy the following equation (a), t&gE;33âˆ’((Tâˆ’800)/100)â€ƒâ€ƒ(a) â€ƒwherein T(Â° C.) is temperature, and t(hr) is time.