{TAIL ~ The silicon melt} is also doped with {HEAD ~ a germanium concentration} that is 1.5 to 2.5 times that of the phosphorus concentration and a stress and dislocation free crystalline boule is grown 
{ TAIL ~ The silicon melt } is also doped with { HEAD ~ a germanium concentration } that is 1.5 to 2.5 times that of the phosphorus concentration and a stress and dislocation free crystalline boule is grown
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH