KNOWLEDGE INSTITUTE OF TECHNOLOGY 2. Obtain an expression for carrier concentration in p type
DEPARTMENT OF MECHANICAL ENGINEERING semiconductor.
PH3251-MATERIAL SCIENCE 3. Explain carrier transport in semiconductor mobility and explain
drift and diffusion transport.
IAT II – QUESTION BANK
4. Define Hall Effect. Explain Hall Effect in n type semiconductor
and p type semiconductor .Obtain an expression for Hall
PART – A coefficient. Mention its applications.
5. Explain Hall devices.
1. Difference between n type and p type semiconductors. 6. Explain metal semiconductor contact.
2. Define drift current and diffusion current. 7. Describe absorption and emission of light in metal,
3. What are Hall devices? Mention its types. semiconductor and insulator.
4. What are the differences between schottky diode and p-n diode? 8. Explain carrier generation and recombination process.
5. Problems – P.No.3.62-3.1,3.69-3.7 9. Explain optical absorption, loss and gain
6. What are optical materials? 10. Explain optical processes in quantum wells.
7. What are the types of optical materials? 11. Describe the construction and working of photodiode.
8. What is the basic principle in LED? 12. Describe the construction and working of solar cell.
9. What are the applications of laser diodes? 13. Describe the construction and working of LED and OLED.
10. What is Franz-Keldysh effect? 14. Describe the construction and working of laser diodes.
11. Define modulation of light and mention its types. 15. Explain about modulators and its types.
12. What is meant by Quantum confined stark effect? 16. Describe optical switching.
13. What are the types of carrier injection? 17. Explain Plasmonics.
14. Mention some examples of photo conductive materials. 18. Explain quantum confinement and quantum structures in nano
15. Define efficiency of solar cell. materials.
16. Define nano materials. 19. Write a short note on Zener bloch oscillations.
17. What is quantum confinement? 20. Describe Resonant tunnelling
18. What is meant by resonant tunnelling? 21. Explain single electron phenomena and single electron
19. Define single electron phenomena. transistor.
20. What is the condition for coulomb blockade effect? 22. Write a note on mesoscopic effect.
21. What are conductance fluctuations? 23. Describe quantum interference effect.
22. What are the applications of quantum interference effect? 24. Describe Spintronics.
23. Give examples for dilute magnetic semiconductor. 25. Describe Carbon nanotubes with their properties and
24. How carbon nanotubes are classified? applications.
25. Define mesoscopic structure. 26. Explain semiconductor for photonic structures.
27. Explain photo process and the effect in nano materials.
PART-B
1. Obtain an expression for carrier concentration in n type
semiconductor.
DEPARTMENT OF MECHANICAL ENGINEERING semiconductor.
PH3251-MATERIAL SCIENCE 3. Explain carrier transport in semiconductor mobility and explain
drift and diffusion transport.
IAT II – QUESTION BANK
4. Define Hall Effect. Explain Hall Effect in n type semiconductor
and p type semiconductor .Obtain an expression for Hall
PART – A coefficient. Mention its applications.
5. Explain Hall devices.
1. Difference between n type and p type semiconductors. 6. Explain metal semiconductor contact.
2. Define drift current and diffusion current. 7. Describe absorption and emission of light in metal,
3. What are Hall devices? Mention its types. semiconductor and insulator.
4. What are the differences between schottky diode and p-n diode? 8. Explain carrier generation and recombination process.
5. Problems – P.No.3.62-3.1,3.69-3.7 9. Explain optical absorption, loss and gain
6. What are optical materials? 10. Explain optical processes in quantum wells.
7. What are the types of optical materials? 11. Describe the construction and working of photodiode.
8. What is the basic principle in LED? 12. Describe the construction and working of solar cell.
9. What are the applications of laser diodes? 13. Describe the construction and working of LED and OLED.
10. What is Franz-Keldysh effect? 14. Describe the construction and working of laser diodes.
11. Define modulation of light and mention its types. 15. Explain about modulators and its types.
12. What is meant by Quantum confined stark effect? 16. Describe optical switching.
13. What are the types of carrier injection? 17. Explain Plasmonics.
14. Mention some examples of photo conductive materials. 18. Explain quantum confinement and quantum structures in nano
15. Define efficiency of solar cell. materials.
16. Define nano materials. 19. Write a short note on Zener bloch oscillations.
17. What is quantum confinement? 20. Describe Resonant tunnelling
18. What is meant by resonant tunnelling? 21. Explain single electron phenomena and single electron
19. Define single electron phenomena. transistor.
20. What is the condition for coulomb blockade effect? 22. Write a note on mesoscopic effect.
21. What are conductance fluctuations? 23. Describe quantum interference effect.
22. What are the applications of quantum interference effect? 24. Describe Spintronics.
23. Give examples for dilute magnetic semiconductor. 25. Describe Carbon nanotubes with their properties and
24. How carbon nanotubes are classified? applications.
25. Define mesoscopic structure. 26. Explain semiconductor for photonic structures.
27. Explain photo process and the effect in nano materials.
PART-B
1. Obtain an expression for carrier concentration in n type
semiconductor.
