Question

the working of LED system is based on which principle

a fluorescent
b phosphorescent
c electroluminescence
d none of the

Answer 1

electroluminescence.......

Answer 2

The answer is phosphorescent.

The LED is usually an organic light emitting diode that works on the phosphorescent principle in order to have higher efficiency.

Earlier, these are used as the organic semiconductor that has the principle as electro luminescence that helps in the current formation.

There are holes and electrons in the whole system that uses the electrodes.

Also, it helps in the bound state.