This low resistivity is achieved by doping {HEAD ~ a silicon melt} with {TAIL ~ a phosphorus concentrations} above 1×1018 
This low resistivity is achieved by doping { HEAD ~ a silicon melt } with { TAIL ~ a phosphorus concentrations } above 1×1018
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH