GK QUESTION#3186
Consider the following statements about LED semiconductors.
1. Gallium is a constituent of compound semiconductors such as GaAs and GaN used in LEDs.
2. Copper and zinc are the principal metal constituents of GaAs and GaN.
Which statements are correct?
Show Answer
Answer
A. 1 only
Show Explanation
Explanation
Gallium arsenide and gallium nitride are compound semiconductors used in light-emitting devices. Their chemical identities involve gallium with arsenic or nitrogen, not copper and zinc as their principal constituents. Statement 1 is true; statement 2 is false.