Question

Radiative recombination and nonradiative recombination

Answer 1

Explanation:

During the non-radiative recombination, the electron energy is converted to vibrational energy of lattice atoms, i.e. phonons. Trap-assisted recombination occurs when an electron falls into a ”trap”, this is an energy level within the bandgap caused by the presence of a foreign atom or a structural defect.

Answer 2

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Recombination mechanisms can in general be classified into two groups, radiative and nonradiative. Radiative recombination occurs when an electron in the conduction band recombines with a hole in the valence band and the excess energy is emitted in the form of a photon.