Which of the following elements is NOT suitable for the fabrication of a light-emitting diode structure?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Germanium.
Other Information-
- Germanium is not used for manufacturing the light-emitting diode structure.
- Light emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it.
- What differentiates this lighting technique from other sources is those that use heated filaments (incandescent and tungsten halogen lamps) or gas discharge (fluorescent lamps).
- Very little voltage and current are enough to drive the LED. Voltage range – 1 to 2 volts, Current – 5 to 20 milliamperes.