The contribution in the total current flowing through a semiconductor due to electrons and holes are 3 4 and 1 4 respectively. If the drift velocity of electrons is 5 2 times that of holes at this tem

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The contribution in the total current flowing through a semiconductor due to electrons and holes are 3 4 and 1 4 respectively. If the drift velocity of electrons is 5 2 times that of holes at this temperature, then the ratio of the concentration of electrons and holes is

TestHub · Accepted Answer

As we know, current density J = n q v ⇒ j e = n e q v e and j h = n h q v h j e J h = n e n h × v e v n ⇒ 3 / 4 1 / 4 = n e n h × 5 2 ⇒ n e n h = 6 5

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