Doping of {TAIL ~ the evaporated material} is possible by evaporating {HEAD ~ doped source material} such as heavily doped silicon 
Doping of { TAIL ~ the evaporated material } is possible by evaporating { HEAD ~ doped source material } such as heavily doped silicon
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH