Question

what are LED bulbs made up of​

Answer 1

Answer:

LEDs are comprised of compound semiconductor materials, which are made up of elements from group III and group V of the periodic table (these are known as III-V materials). Examples of III-V materials commonly used to make LEDs are gallium arsenide (GaAs) and gallium phosphide (GaP).

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Answer 2

Answer:

made up of element from group 3 and group 5 of the periodic table