When a sample of germanium and silicon having same impurity density are kept at room temperature then Resistivity of silicon will be higher than that of germanium, Why?

vicky

• Jan 8th, 2017

Si-50*10^3ohm-cm and ge-50ohm-cm

vmshankar20

 Profile Answers by vmshankar20 Questions by vmshankar20

• Apr 30th, 2009

The answer is simple. Consider the PN diode for Ge 0.3eV is the breakdown voltage and in the case of Si its 0.7eV since the impurities are added in the same amount the bond due to the other atoms of the Si makes it resistive compared to the Ge.. thats all!

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