Direct Determination of the Internal Quantum Efficiency of Light-Emitting Diodes

The maximum internal quantum efficiency (IQE) of light-emitting diodes (LEDs) can be obtained using the so-called ABC model. Since the ABC model is based on the experimentally not directly accessible carrier density, the light over current data is usually fitted as a function of the light output to yield the maximum IQE. This article shows a method to directly obtain the IQE from experimental data without fitting, which also reflects changes of the A, B, or C parameters over the current range.

Automated summary

This article presents a method for directly obtaining the maximum internal quantum efficiency (IQE) of light-emitting diodes (LEDs) from experimental data without the need for fitting. This method also allows for the observation of changes in the A, B, or C parameters over the current range.