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# Acceptor impurity of concentration 1014 cm–3 is added to a pure silicon sample. Which of the...

Acceptor impurity of concentration 1014 cm–3 is added to a pure silicon sample. Which of the following correctly shows the hole concentration (in cm–3) at thermal equilibrium, at 500 K? Assume ?i = 1.45 x 1010 cm–3 at 300 K and neglect the temperature dependence of the band gap.

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