Patent ID: 9163327
Filing Date: 2015-10-20
Classification: C30B,F24F,H01L,Y02E,Y02P

Abstract:
1. A silicon wafer, comprising: a silicon wafer body having a flat silicon wafer surface and a silicon wafer boron concentration; and a polycrystal silicon body having a flat polycrystal silicon surface in contact with and connected to the flat silicon wafer surface forming an interface therebetween, the polycrystal silicon body having a thickness commencing at the interface and extending in a thickness direction away from the flat silicon wafer surface, the polycrystal silicon body including a polycrystal silicon boron concentration layer commencing at the interface and extending in the thickness direction at approximately 1 μm, the polycrystal silicon boron concentration layer having a polycrystal silicon boron concentration in a range greater than zero and less than or equal to 1×10