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Alkali Metals

Suppose a pur...

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Suppose a pure Si crystal 5×10^{28}atoms per m^3. It is doped by 1ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that n_i=1.5×10^{16}per m^3

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Q. Suppose a pure Si crystal has

5 \times 10^{28}

m^{3}

. It is doped by

1

ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that

n_{i} = 1.5 \times 10^{16}

m^{3}

Q. Suppose a pure

S i c r y s t a l

5 \times 10^{28} a t o m s m^{- 3} .

1 p p m

concentration of pentavalent

A s .

Calculate the number of electrons and holes. Given that

n_{i} = 1.5 \times 10^{16} m^{-} 3 .

Q. Suppose a pure Si crystal has

5 \times 10^{28}

m^{- 3}

. it is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that

n_{1} = 1.5 \times 10^{16} m^{- 3}

Q. Suppose a pure Si crystal has

5 \times 10^{28} {atom m}^{- 3}

. It is doped with

1 ppm

concentration of pentavalent Arsenic. Calculate the number of holes

(n_{i} = 2.5 \times 10^{16} m^{- 3})

Q. The number of silicon atoms per

m^{3}

5 \times 10^{28}

. This is doped simultaneously with

5 \times 10^{22}

m^{3}

5 \times 10^{20}

m^{3}

atoms of indium. Calculate the number of electrons and holes. Given that

n_{i} = 1.5 \times 10^{16} / m^{3}

. Is the material n-type or p-type?

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