Phase transitions in amorphous Si produced by rapid heating

P Baeri, G Foti, JM Poate, AG Cullis - Physical Review Letters, 1980 - APS
P Baeri, G Foti, JM Poate, AG Cullis
Physical Review Letters, 1980APS
Amorphous Si layers have been melted by pulsed electron irradiation. Implanted As has
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 …
Abstract
Amorphous Si layers have been melted by pulsed electron irradiation. Implanted As has 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 compared to 1685 K for crystalline Si.
American Physical Society
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