Abstract
Auger recombination (AR) is usually assumed to depend on the electron density n and the hole density p like n2p (or np2). But, there are deviations from these rules, mainly in degenerate semiconductors. Studying this case the following results were obtained: 1. Normal AR which is only possible in narrow-gap semiconductors goes approximately as np. 2. Phonon-assisted AR which predominates in “normal” gap semiconductors (Eg ≈ 1 eV) has the “usual” density dependence n2p. 3. Second order AR with two Auger electrons goes with n73p (instead of an expected dependence n3p). Moreover, the density dependence may be influenced by the screening of the Coulomb interaction and by the strength of the excitation.
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