Question

hi. i have a question about deriving a equation.

i know that its about differential equations, but i am having trouble deriving it.

ng & Application Laboratoryp Eqs. (3.63) or (3.66) Ot t OX d (An)_An @ steady-state condition and no const. dhe2 Using boundar/conditionsAn 1m(0) @ x-0 and Δn-0 @ x 00, Here z" = 19,tn electron diffusion lung before it recombines. L-De hole diffusion length : average distance an e diffuses before it recombines. : average distance an li diffuses before it recombines.

i wanna get lower one from upper one. i am waiting your help. thanks.

Answer 1

2 d (An) 2 てn Dn 2. chaecteu세c equation : 0 다) Hence general aludim is given ams' ing boundary Con So, we

Same derivation can be done for hole diffusion (p).

If you have further doubt ask in comments.