Abstract

Deep traps spectra are compared for GaN/InGaN light emitting diodes with and without a template embedded with SiO2 nanoparticles underlying the active multiple quantum well region. The structures with SiO2 nanoparticles show a higher internal quantum efficiency which correlates with a lower concentration of deep traps with level near Ec-0.6 eV as compared to reference structures. We discuss complications in deep traps analysis coming from the freeze-out of Mg acceptors and the choice of proper biasing conditions for deep traps spectra analysis.

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