Question

Problem 7 Which of the following statements, related to a P-N junction, are correct? (a) The direction of the built-in electric field in the depletion layer is from the N-type toward the P-type region. (b) At reverse bias, the Fermi level is constant for the entire P-N junction system. (c) The net (effective) charge density at each point of the depletion layer is zero. (d) A nonzero current of minority carriers flows through the junction at zero bias. (e) The current of minority carriers depends on the voltage applied. (f) At reverse bias, the depletion-layer width is saturated (does not depend on the voltage applied). (g) The net charge outside the depletion layer of a reverse-biased P-N junction is zero. (h) At reverse bias, any electron current is fully compensated by corresponding hole current. (i) The voltage drop in the neutral regions can be neglected in comparison to the voltage drop in the depletion layer. (j) The electric field in the neutral regions is not large enough to produce a significant drift current of the majority carriers. (k) The diffusion current of the minority carriers is significant. (l) The number of electrons able to overcome the energy barrier at the P-N junction increases exponentially with the forward bias voltage. (m) The drift current of the minority carriers is significant. (n) Forward bias does not influence the barrier height at the P-N junction, because it does not affect the built-in voltage.

          Problem 7
Which of the following statements, related to a P-N junction, are correct?
(a) The direction of the built-in electric field in the depletion layer is from the N-type toward the P-type region.
(b) At reverse bias, the Fermi level is constant for the entire P-N junction system.
(c) The net (effective) charge density at each point of the depletion layer is zero.
(d) A nonzero current of minority carriers flows through the junction at zero bias.
(e) The current of minority carriers depends on the voltage applied.
(f) At reverse bias, the depletion-layer width is saturated (does not depend on the voltage applied).
(g) The net charge outside the depletion layer of a reverse-biased P-N junction is zero.
(h) At reverse bias, any electron current is fully compensated by corresponding hole current.
(i) The voltage drop in the neutral regions can be neglected in comparison to the voltage drop in the depletion layer.
(j) The electric field in the neutral regions is not large enough to produce a significant drift current of the majority carriers.
(k) The diffusion current of the minority carriers is significant.
(l) The number of electrons able to overcome the energy barrier at the P-N junction increases exponentially with the forward bias voltage.
(m) The drift current of the minority carriers is significant.
(n) Forward bias does not influence the barrier height at the P-N junction, because it does not affect the built-in voltage.

Problem 7
Which of the following statements, related to a P-N junction, are correct?
(a) The direction of the built-in electric field in the depletion layer is from the N-type toward the P-type region.
(b) At reverse bias, the Fermi level is constant for the entire P-N junction system.
(c) The net (effective) charge density at each point of the depletion layer is zero.
(d) A nonzero current of minority carriers flows through the junction at zero bias.
(e) The current of minority carriers depends on the voltage applied.
(f) At reverse bias, the depletion-layer width is saturated (does not depend on the voltage applied).
(g) The net charge outside the depletion layer of a reverse-biased P-N junction is zero.
(h) At reverse bias, any electron current is fully compensated by corresponding hole current.
(i) The voltage drop in the neutral regions can be neglected in comparison to the voltage drop in the depletion layer.
(j) The electric field in the neutral regions is not large enough to produce a significant drift current of the majority carriers.
(k) The diffusion current of the minority carriers is significant.
(l) The number of electrons able to overcome the energy barrier at the P-N junction increases exponentially with the forward bias voltage.
(m) The drift current of the minority carriers is significant.
(n) Forward bias does not influence the barrier height at the P-N junction, because it does not affect the built-in voltage.

Added by Justin G.

Question

Please give Ace some feedback