EC6356 OPTO ELECTRONIC DEVICES, Final year, Department of Electronics & Communication Engineering, First and second Units Questions

PART A(10*2=20)
1. Define optoelectronic device.
2. Expression wave nature of light.
3. What is airy disk.
4. What are blackbody and line sources.
5. List out major differences between intrinsic and extrinsic semiconductors.
6. Define diffraction.
7. What are the types of luminescence.
8. What are the LED commercial materials.
9. Define quantum efficiency.
10.What are the three basics types of ordering LCD?

PART B (16*5=80)

11.a) Explain details about interference. (10)
        b) Explain and short notes about polarization. (06)
12. Explain and details about review of quantum mechanical concepts using Schrodinger   equation. (16)
13.  Explain details about review of semiconductor junction devices. (16)
14. a) Explain details about electroluminescence. (10)
       b) Explain details about cathode luminescence. (06)
15. a) Explain details about LED. (10)
       b) Explain and short notes about numerical display. (06)