In an attempt to form a heavily doped p-type boule of silicon, a CZ process is run in which the initial melt concentration of boron was 0.5%. Assume that the solidification temperature was 1400C, and that the boule cooled rapidly after solidification. (a) What is the solid solubility of boron at this temperature? (b) What fraction of the boule must be pulled (i.e. solidified) before the concentration of the boron in the solid will begin to exceed the solid solubility of boron in silicon? (c) What is the concentration (in percent) of boron in the liquid at this point, assuming that the liquid has a uniform concentration? Expert Answer This solution was written by a subject matter expert. It's designed to help students like you learn core concepts. Anonymous answered this 152 answers fovs (a) Fa the graph of solid solubility of boron in Si as a function of T uve get Solubility=1.41021cm3