Lecture 8.0. Silicon Crystal Growth. Silicon Mfg. - old. Produce Silicon metal bar Zone Refining – n times To get purity Cut off impure end Use pieces to fill crystallization apparatus Grow Mono-Crystal of large size. Zone Refining. 0=x-Ut, k=C S /C L.
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Silicon Crystal Growth
Co=solute concentration in melt or of solid on first pass
Co=0x+L Cs(x)dx - ox-L kCL(x)dx
Melting Point is decreased
Solid produced has a given impurity concentationAdd Dopants to Silicon Grown