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← ScienceWhich outcome occurs when rapidly cooling crystalline silicon?
A)Formation of micro-cracks propagates quickly✓
B)Complete transformation into amorphous state
C)Improved electron-phonon scattering occurs
D)Dopant atoms diffuse more effectively
💡 Explanation
Micro-cracks propagate due to unequal thermal contraction because the thermal expansion anisotropy generates localized stresses exceeding tensile strength, therefore cracking is promoted rather than amorphous transition because recrystallization is kinetically limited and dopant diffusion slows down.
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