Article | REF: E3335 V1

Microwave photonics. Optical control of electronic functions

Author: Charlotte TRIPON-CANSELIET

Publication date: January 10, 2014

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2. Light emission and absorption mechanisms in semiconductors

This section focuses on the generation and recombination of carriers in a semiconductor material.

2.1 Charge density in a semiconductor material

For each type of semiconductor material, extrinsic or intrinsic (i.e., doped or not intentionally doped), in the state of thermodynamic equilibrium, the concentrations of electrons n 0 (1) and holes p 0 (2) are defined from the density of states in the valence band N v and in the conduction band N c...

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Light emission and absorption mechanisms in semiconductors