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HL: Fachverband Halbleiterphysik

HL 32: Poster I: Group II - Oxides

HL 32.3: Poster

Dienstag, 23. März 2010, 18:30–20:30, Poster D1

First principles calculation of inter- and intra-band Auger recombination rates in ZnMgO — •Markus Heinemann and Christian Heiliger — I. Physikalisches Institut, Justus Liebig University Giessen, D-35392 Giessen, Germany

Recent theoretical work on GaInN [1] indicates that inter-band Auger recombination causes a resonance in the Auger coefficient in the blue to green spectrum which leads to a loss in quantum efficiency of nitrite based light emitters. We report ab initio investigations on non-radiative loss mechanisms due to band-to-band Auger recombination in wurtzite ZnMgO alloys. We use density functional theory to compute inter- and intra-band Auger recombination rates as a function of the Mg concentration.

[1] K. T. Delaney, P. Rinke, and C. G. Van de Walle, Appl. Phys. Lett. 94, 191109 (2009)