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arXiv · 0904.3559

Auger recombination rates in nitrides from first principles

Kris T. Delaney·Patrick Rinke·Chris G. Van de Walle
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Abstract

We report Auger recombination rates for wurtzite InGaN calculated from first principles density-functional and many-body-perturbation theory. Two different mechanisms are examined -- inter- and intra-band recombination -- that affect different parts of the emission spectrum. In the blue to green spectral region and at room temperature the Auger coefficient can be as large as 2x10^-30cm^6s^-1; in the infrared even larger. Since Auger recombination scales with the cubic power of the free-carrier concentration it becomes an important non-radiative loss mechanism at high current densities. Our results indicate that Auger recombination may be responsible for the loss of quantum efficiency that affects InGaN-based light emitters.

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Kris T. Delaney, Patrick Rinke, Chris G. Van de Walle. 2009-04-22. Auger recombination rates in nitrides from first principles. https://doi.org/10.1063/1.3133359

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