Patent ID: 6277501
Filing Date: 2001-08-21
Classification: C30B,H01L,Y10S,Y10T

Abstract:
A silicon epitaxial wafer, which is a silicon single crystal grown via the CZ method, and doped with either boron or phosphorous; which has an oxygen concentration in the range of 12.about.27.times.10.sup.17 atoms/cm.sup.3 (OLD ASTM method), and a carbon concentration in the range of 0.5.about.32.times.10.sup.16 atoms/cm.sup.3 (NEW ASTM 80 method); and which is polished to a mirror finish on one side or two sides, and has an epitaxial layer grown on a surface of the wafer, which has not been subjected to any process from which an EG effect can be anticipated.