A semiconductor has a bandgap of 2.3 eV. You shine a monochromatic light that ha

Question

A semiconductor has a bandgap of 2.3 eV. You shine a monochromatic light that has an energy of 2.4 eV. The light will be

A semiconductor has a bandgap of 2.1 eV. You shine a monochromatic light that has an energy of 1.9 eV. The light will be

D Question 2 2.5 pts A semiconductor has a bandgap of 2.3 eV. You shine a monochromatic light that has an energy of 2.4 eV. The light will be absorbed transmitted Question 3 2.5 pts A semiconductor has a bandgap of 2.1 eV. You shine a monochromatic light that has an energy of 1.9 eV. The light will be transmitted absorbed

Explanation / Answer

Answer 2

Eph > EG - light with energy much greater than the band gap are strongly absorbed

Eph= 2.4 eV         EG = 2.3 eV

Thus light will be absorbed.

Answer 3

Eph < EG light with energy Eph less than the band gap energy EGinteract only weakly with the semiconductor, passing through it as if it were transmitted.

Eph= 1.9 eV         EG = 2.1 eV

thus light will be transmitted.

Metals absorb _ all__wavelengths of visible light because of the continuously available empty electron states

eg gold- blue , copper- orange ,

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