been used as a marker for determining melt duration. Systematic differences between As
diffusion in initially amorphous or crystalline Si are interpreted in terms of different enthalpies
of melting between amorphous (1220 J/g) and crystalline (1790 J/g) Si. The implanted
amorphous layers melt and crystallize at significantly lower electron energies than those
required to melt and recrystallize crystalline Si, indicating that amorphous Si melts at 1170 K …