Transition energy refers to the specific amount of energy required for an electron in a semiconductor to move from one energy state to another, typically from the valence band to the conduction band. This concept is crucial for understanding optical transitions, as it determines how materials interact with light and how they can be used in various optoelectronic applications. Transition energy is often associated with the band gap of a semiconductor, which defines the energy levels available for electron excitation and influences the optical properties of the material.
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