Question

Underline all the correct answers. Explain why an answer is correct or why it is wrong. You are supposed to select all of the correct answers (1-6) for each roman numeral (I-III)

--Please justify/explain answers thoroughly--

Problem 5. If photons with energy of 0.7 eV was applied to A Si Wafer is at 300k (E_g for Si =1.12eV), the valence and conduction band are

(I)

1-      Both are completely empty

2-      Both are completely filled.

3-      Both are partially empty.

4-      Both are partially filled.

5-      None of the above

6-      All of the above 1-4.

(II)

1-      CB band is completely empty and VB is completely filled.

2-      VB band is completely empty and CB is completely filled.

3-      CB band is partially empty and VB is completely filled.

4-      VB band is partially empty and CB is completely filled.

5-      None of the above

6-      All of the above (1-4)

(III)

1-      CB band is partially filled and VB is completely filled.

2-      VB band is partially filled and CB is completely filled.

3-      CB band is partially empty and VB is partially filled.

4-      VB band is partially empty and CB is partially filled.

5-      None of the above

6-      All of the above (1-4)

Answer 1