申論題

2. The electron concentration in a semiconductor material is given by

for 0≤x≤L 

The length of the material L is 100 um. The electron mobility is 1500 cm²/V-s at 300 K. An electric field is applied such that the total electron current density is a constant over the given range of x and is Jn = -95 A/cm². Determine the required electric field versus distance function. (20%)