TY - JOUR
T1 - Thermodynamic properties of Si-Al, -Ca, -Mg binary and Si-Ca-Al, -Ti, -Fe ternary alloys
AU - Miki, Takahiro
AU - Morita, Kazuki
AU - Sano, Nobuo
PY - 1999/10
Y1 - 1999/10
N2 - Metallic impurities such as Al, Ca, Mg, Ti, and Fe in Si deteriorate solar cell efficiency to a large extent. To discuss the possibility and efficiency of impurity elimination process, the evaluation of their thermodynamic properties in molten Si are crucial. In the present work, the self-interaction parameters of Al, Ca, and Mg and interaction parameters between Ca-M (M: Al, Ti, Fe) in molten Si at 1723 K were investigated by applying a chemical equilibration technique for Si based alloys with Pb. The activity coefficients of Al and Ca in molten Si at 1723-1823 K were also determined by the Knudsen effusion method.
AB - Metallic impurities such as Al, Ca, Mg, Ti, and Fe in Si deteriorate solar cell efficiency to a large extent. To discuss the possibility and efficiency of impurity elimination process, the evaluation of their thermodynamic properties in molten Si are crucial. In the present work, the self-interaction parameters of Al, Ca, and Mg and interaction parameters between Ca-M (M: Al, Ti, Fe) in molten Si at 1723 K were investigated by applying a chemical equilibration technique for Si based alloys with Pb. The activity coefficients of Al and Ca in molten Si at 1723-1823 K were also determined by the Knudsen effusion method.
KW - Activity
KW - Aluminum
KW - Calcium
KW - Interaction parameter
KW - Iron
KW - Knudsen effusion
KW - Magnesium
KW - Silicon
KW - Thermodynamics
KW - Titanium
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U2 - 10.2320/matertrans1989.40.1108
DO - 10.2320/matertrans1989.40.1108
M3 - Article
AN - SCOPUS:0033204203
SN - 0916-1821
VL - 40
SP - 1108
EP - 1116
JO - materials transactions, jim
JF - materials transactions, jim
IS - 10
ER -