Question

J p-region Depletion n-region Majority carrier diffusion and drift current Jelec Jhole Total current Minority carrier diffusion current J = Jelec + Jhole x -Wp Wn Figure 4: Total diffusion current in a pn junction. This is the sum of the electron and hole current and also a drift component due to the electric field. The diffusion current is due to the injection of minority carriers. Adapted from Principles of Electronic Materials - S.O. Kasap.

          J
p-region
Depletion
n-region
Majority carrier
diffusion and drift
current
Jelec
Jhole
Total current
Minority carrier
diffusion current
J = Jelec + Jhole
x
-Wp Wn
Figure 4: Total diffusion current in a pn junction. This is the sum of the
electron and hole current and also a drift component due to the electric field.
The diffusion current is due to the injection of minority carriers. Adapted
from Principles of Electronic Materials - S.O. Kasap.

J
p-region
Depletion
n-region
Majority carrier
diffusion and drift
current
Jelec
Jhole
Total current
Minority carrier
diffusion current
J = Jelec + Jhole
x
-Wp Wn
Figure 4: Total diffusion current in a pn junction. This is the sum of the
electron and hole current and also a drift component due to the electric field.
The diffusion current is due to the injection of minority carriers. Adapted
from Principles of Electronic Materials - S.O. Kasap.

Added by Jeffrey J.

Modern Physics

Randy Harris 2nd Edition

Chapter 10

Instant Answer

Solved by Expert Gokul R Nair

Step 1

The figure shows a pn junction with three distinct regions: p-region (left), depletion region (center), and n-region (right). The x-axis represents position across the junction, and the J-axis represents current density. Show more…

Show all steps

Thanks for your feedback!

Consider a forward-biased ideal (abrupt junction, no recombination or generation in the depletion region) long PN junction diode. This is the diagram of current: Which side, the p- or n-side, has a higher doping level? Why? J p-region Depletion n-region J = Jelec + Jhole Total current Majority carrier diffusion and drift current Jhole Jelec Minority carrier diffusion current -Wp Wn Figure 4: Total diffusion current in a pn junction. This is the sum of the electron and hole current and also a drift component due to the electric field. The diffusion current is due to the injection of minority carriers. Adapted from Principles of Electronic Materials - S.O. Kasap.