Light emitting diodes, lasers 1. Describe what physical property of a semiconductor will deem it good...

Light emitting diodes, lasers

1. Describe what physical property of a semiconductor will deem it good or bad for use in an LED.

2. Describe general operation and configuration of an LED, what determines the emission wavelength (color).

3. Describe the role of defects in emission in terms of an energy band diagram.

4. Define heterojunction, homojunction, epitaxy

5. Describe why lattice matching is important (broadly)

6. Describe why LED emission does not occur at a single wavelength, and how you expect this to change with temperature

7. Describe the general operation of a laser and the concept of population inversion

8. Describe why the linewidth of a laser is more narrow than that of a light emitting diode

Expert Solution

genius_generous answered 1 year ago

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