Topic: Electronic Devices
Which of the following semiconductor compound is not used in the construction of Light Emitting Diodes?
- A. GaAs
- B. GaP
- C. GaSe
- D. GaN
Answer: C. GaSe
Explanation: Gallium Arsenide (GaAs) is used for infrared LEDs, Gallium Phosphide (GaP) is used for red, yellow, and green LEDs, and Gallium Nitride (GaN) is used for blue LEDs. Gallium Selenide (GaSe) is a layered semiconductor and is not standardly used for the commercial construction of LEDs.