Question 4-) The linear electron-concentration profile shown in the figure below has been established in a silicon material. If no = 1017/cm3 and W = 4 um, find the electron-current density. If a...

Extracted text: Question 4-) The linear electron-concentration profile shown in the figure below has been established in a silicon material. If no = 1017/cm3 and W = 4 um, find the electron-current density. If a diffusion current of 1 mA is required, what must the cross-sectional area (in a direction perpendicular to the page) be? Dn = 35cm² /s . n(x) 2no W