14.8 The number of silicon atoms per m3 is 5 × 1028. This is doped simultaneously with 5 × 1022 atoms per m3 of Arsenic and 5 × 1020 per m3 atoms of Indium. Calculate the number of electrons and holes. Given that ni = 1.5 × 1016 m–3. Is the material n type or p type?
14.8 The number of silicon atoms per m3 is 5 × 1028. This is doped simultaneously with 5 × 1022 atoms per m3 of Arsenic and 5 × 1020 per m3 atoms of Indium. Calculate the number of electrons and holes. Given that ni = 1.5 × 1016 m–3. Is the material n type or p type?
-
1 Answer
-
14.8 Number of silicone atoms, = 5 /
Number of arsenic atoms, = 5 /
Number of indium atoms, = 5 /
Number of thermally generated atoms, = 1.5 /
Hence number of electrons, = 5 1.5 = 4.99
Number of holes =
In thermal equilibrium, the concentration of electrons and holes in a semiconductor are related as:
=
Therefore, = = = 4.51
Since the number of electrons are more (4.99 than the number of holes (4.51 , the material is a
...more
Similar Questions for you
ibattery=
i2kW =
iz = (7 – 1.5) mA
= 5.5mA
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers