Light emitting diodes consists of both n-type and p-type semiconductors joined a

Question

Light emitting diodes consists of both n-type and p-type semiconductors joined at a junction. When the voltage of enough energy is applied across the junction, electrons from the n-doped conduction band layer are forced through the junction where they meet holes from the p-doped layer. Because this involves electron transitions from the higher energy conduction band to the lower energy valence band, energy is released in the form of light. Each electron transition results in the emission of a photon with an energy equal to the band gap energy.

Explanation / Answer

We are given with GaP(1-x) Asx, we can get value of x by comparing this to watever is given in (1) (2) (3) (4), so th value of x are as follows

1. 0.60

2. 0.15

3. 0.15

4. 0

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