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A lightly doped Si sample (ND = 1014 cm-3) is heated from 300 K to 400 K. Is its resistivity expected to increase or

A lightly doped Si sample (ND = 1014 cm-3) is heated from 300 K to 400 K. Is its resistivity expected to increase or decrease? Explain your answer including calculation. Repeat for Si with ND 1018 cm-3.

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