(b) repeat this calculation at room temperature (298 k). (c) what is ratio of nv /n(600 k) and nv /n(298 k)

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(b) repeat this calculation at room temperature (298 k). (c) what is ratio of nv /n(600 k) and nv /n(298 k)

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Lệ Thu 3 years 2021-09-05T13:34:06+00:00 1 Answers 120 views 0

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  1. Philomena
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    2021-09-05T13:35:45+00:00
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    We know , vacancy concentration is given by :

    \dfrac{N_v}{N_t}=e^-({\dfrac{Qv}{kT}})

    Here , k=8.62\times 10^{-5}\ eV/atom \ K . ( Boltzmann’s constant )

    T = Absolute temperature in Kelvin .

    Now ,

    \dfrac{(\dfrac{N_v}{N_t})_{1232\ K}}{(\dfrac{N_v}{N_t})_{298\ K}}\\\\\\=\dfrac{2.087\times 10^{-4}}{6.08 \times 10^{-16}}\\\\=3.432\times 10^{11}

    Hence , this is the required solution .

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