• Support PF! Buy your school textbooks, materials and every day products Here!

Hole Diffusion Current of a P-N Junction

  • #1

Homework Statement



A p+-n junction with the n-side donor concentration of 1016cm-3. If ni = 1010cm-3, the relative dielectric constant er = 12, Dn = 50cm2/s, Dp = 20cm2/s, tn = 100ns, tp = 50ns. Calculate the hole diffusion current density 2mm from the depletion edge on the n-side under a forward bias of 0.6V.

Homework Equations



J(p) [drift] = -qDpΔp

The Attempt at a Solution



My only understanding of how to solve this problem is by the relevant equation given above, yet i dont know how to find Δp from the given information. Perhaps there is another equation that suites better in solving this problem given the parameters at hand.
 

Answers and Replies

Related Threads on Hole Diffusion Current of a P-N Junction

  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
1
Views
2K
Replies
0
Views
1K
Replies
2
Views
6K
  • Last Post
Replies
5
Views
6K
Replies
2
Views
591
Replies
2
Views
10K
Replies
0
Views
1K
  • Last Post
Replies
5
Views
4K
Top