Phosphorus in high concentrations will induce {TAIL ~ stress} in the crystal lattice due to the difference in {HEAD ~ the atomic radius} of silicon atoms versus phosphorus atoms 
Phosphorus in high concentrations will induce { TAIL ~ stress } in the crystal lattice due to the difference in { HEAD ~ the atomic radius } of silicon atoms versus phosphorus atoms
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH