Which of the following equations represent the correct expression for the band diagram of the p-n junction? (E1=difference between the fermi level of material and conduction band of n material and E2=difference between the conduction band of n material and fermi level of n material)

Which of the following equations represent the correct expression for

1.	Which of the following equations represent the correct expression for the band diagram of the p-n junction? (E1=difference between the fermi level of material and conduction band of n material and E2=difference between the conduction band of n material and fermi level of n material)
A.	tE<sub>cn</sub> E <sub>f</sub> = (1/2)*E<sub>G</sub> E<sub>1</sub>
B.	tE<sub>cn</sub> E <sub>f</sub> = (1/2)*E<sub>G</sub> E<sub>2</sub>
C.	tE<sub>f</sub> E<sub>cp</sub> = (1/2)*E<sub>G</sub> E<sub>1</sub>
D.	tE<sub>cn</sub> E<sub>f</sub> = (1/2)*E<sub>G</sub> + E<sub>1</sub>
Answer» B. tE<sub>cn</sub> E <sub>f</sub> = (1/2)*E<sub>G</sub> E<sub>2</sub>