Given density of carrier is $$1$$⋅$$6$$×$$1010/cm3$$, carrier mobilities for electron and holes at $$300$$ K are $$1500$$ and $$500$$ $$cm2volt-$$$$sec$$, electronic charge $$=1$$⋅$$602$$×$$10$$−$$19C$$ Then the conductivity at $$300$$ K of pure silicon is

Correct option is 35⋅13×10−6/Ω−cm

Questions

Given density of carrier is ${1⋅6×10}^{10} / {cm}^{3}$ , carrier mobilities for electron and holes at 300 K are 1500 and 500 cm²volt-sec, electronic charge $= 1 \cdot 602 \times 10^{- 19} C$ Then the conductivity at 300 K of pure silicon is

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2⋅18×10−6/Ω−cm

1⋅19×10−6/Ω−cm

5⋅13×10−6/Ω−cm

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detailed solution

Correct option is C

σ=neμe+μh σ=1⋅6×1010×1⋅602×10−19[1500+500] =5.13×10−6/Ω−cm at 300K

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Given density of carrier is 1⋅6×1010/cm3, carrier mobilities for electron and holes at 300 K are 1500 and 500 cm2volt-sec, electronic charge =1⋅602×10−19C Then the conductivity at 300 K of pure silicon is

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Ready to Test Your Skills?

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Given density of carrier is ${1⋅6×10}^{10} / {cm}^{3}$ , carrier mobilities for electron and holes at 300 K are 1500 and 500 cm²volt-sec, electronic charge $= 1 \cdot 602 \times 10^{- 19} C$ Then the conductivity at 300 K of pure silicon is