Abstract
Metallic impurities in Si will decrease solar cell efficiency to a large extent. To discuss the possibility and efficiency of impurity elimination process, evaluation of thermodynamic properties of impurities in molten silicon are crucial. In the present work, thermodynamic properties of Fe in molten Si were investigated by Knudsen effusion method. The activity coefficients of Fe in molten Si for infinitely dilute solution relative to pure liquid, and self-interaction parameters at 1723-1823 K were determined.
