Underline all thecorrect answers. Explain why an answer is correct or why it iswrong. You are supposed to select all of thecorrect answers (1-6) for each roman numeral (I-III)
--Pleasejustify/explain answers thoroughly--
Problem 7. If photons with energy of 1.7 eV was appliedto A Si Wafer is at 300k (Eg for Si =1.12eV), thevalence and conduction band are
(I)
1-Â Â Â Â Â Both are completely empty
2-Â Â Â Â Â Both are completely filled.
3-Â Â Â Â Â Both are partially empty.
4-Â Â Â Â Â Both are partially filled.
5-Â Â Â Â Â None of the above
6-Â Â Â Â Â All of the above 1-4.
(II)
1-Â Â Â Â Â CB band is completely empty andVB is completely filled.
2-Â Â Â Â Â VB band is completely empty andCB is completely filled.
3-Â Â Â Â Â CB band is partially empty andVB is completely filled.
4-Â Â Â Â Â VB band is partially empty andCB is completely filled.
5-Â Â Â Â Â None of the above
6-Â Â Â Â Â All of the above (1-4)
(III)
1-Â Â Â Â Â CB band is partially filled andVB is completely filled.
2-Â Â Â Â Â VB band is partially filled andCB is completely filled.
3-Â Â Â Â Â CB band is partially empty andVB is partially filled.
4-Â Â Â Â Â VB band is partially empty andCB is partially filled.
5-Â Â Â Â Â None of the above
6-Â Â Â Â Â All of the above (1-4)
