An n-type semiconductor has impurity level $20 m e V$ below the conduction band. In a thermal collision, transferable energy is $k T$ . The value of $T$ for which electrons start to jump in conduction band is

232 K

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348 K

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400 K

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600 K

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Solution

The correct option is A $232 K$
We have:

$k T = 20 \times 10^{- 3} e V$
$T = \frac{20 \times 10^{- 3} e V}{8.62 \times 10^{- 5} e V / K}$
$T = 232 K$

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An n-type semiconductor has impurity level 20meV below the conduction band. In a thermal collision, transferable energy is kT. The value of T for which electrons start to jump in conduction band is

The correct option is A 232KWe have:kT=20×10−3eVT=20×10−3eV8.62×10−5eV/KT=232K

An n-type semiconductor has impurity level $20 m e V$ below the conduction band. In a thermal collision, transferable energy is $k T$ . The value of $T$ for which electrons start to jump in conduction band is

The correct option is A $232 K$
We have:

$k T = 20 \times 10^{- 3} e V$
$T = \frac{20 \times 10^{- 3} e V}{8.62 \times 10^{- 5} e V / K}$
$T = 232 K$