Find the extrinsic conductivity of germanium doped with indium to a concentration of 2xx10^(22)m^(-3), with antimony to a concentration of 5xx10^(21)m^(-3).

Find the extrinsic conductivity of germanium doped with indium to a co

1.	Find the extrinsic conductivity of germanium doped with indium to a concentration of 2xx10^(22)m^(-3), with antimony to a concentration of 5xx10^(21)m^(-3).
Answer» SOLUTION :Since indium is a trivalent element, the indium impurity acts as an acceptor and produces hole-type conductivity. Knowing the CONCENTRATION of holes and their MOBILITY, we obtain `gamma=en_(+)b_(+)`. Antimony is a pentavalent element, so the antimony impurity acts as a DONOR. The electric conductivity is `gamma=en_(-)b_(-)`.

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Find the extrinsic conductivity of germanium doped with indium to a concentration of 2xx10^(22)m^(-3), with antimony to a concentration of 5xx10^(21)m^(-3).

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