Remember this sequence in real research: find: Charge q and charge density 

Remember this sequence in real research: find:

• Charge Q and charge density 

• Electric field E

• Potential 

• Energy barrier q 

• Depletion region WD or equivalent local region

• C-V

• I-V

Realistic experimental result:

What is LD: the Debye length:

Steps 1-3:

E –field = E (x), and E max:

Potential i(x), and bi: