EC > GATE 2020 > Semiconductor Devices
Consider the recombination process via bulk traps in a forward biased pn homojunction diode. The maximum recombination rate is Umax. If the electron and the hole capture cross-sections are equal, which one of the following is FALSE?
A
With all other parameters unchanged, Umax decreases if the intrinsic carrier density is reduced.
B
Umax occurs at the edges of the depletion region in the device.
C
Umax depends exponentially on the applied bias.
D
With all other parameters unchanged, Umax increases if the thermal velocity of the carriers increases.

Correct : b

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