Frequency limits of high-efficiency non-resonant cavity light-emitting diodes

Paul L. Heremans; Reiner Windisch; Alexander Knobloch; J. Potemans; Barundeb Dutta; Gottfried H. Doehler; Gustaaf Borghs

doi:10.1117/12.344479

14 April 1999 Frequency limits of high-efficiency non-resonant cavity light-emitting diodes

Paul L. Heremans, Reiner Windisch, Alexander Knobloch, J. Potemans, Barundeb Dutta, Gottfried H. Doehler, Gustaaf Borghs

Author Affiliations +

Proceedings Volume 3621, Light-Emitting Diodes: Research, Manufacturing, and Applications III; (1999) https://doi.org/10.1117/12.344479
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

In this paper, we present measurements of the switch-on times and of the switch-off times of non-resonant cavity light-emitting diodes, compared to those of conventional reference diodes. From this comparison, we infer that the high quantum efficiency of NRC-LED's is not achieved by photon recycling, but purely by efficient extraction of generated photons. This is further corroborated by the good matching that is achieved between the measured switch-on times and theoretical predictions of the switch-on times. The latter are calculated with a model that includes only the electrical charging of the active layer and assumes that photon recycling does not occur. It is furthermore shown that the switch-on can be made faster by switching the diode between a non-zero low-state and the required high state. Doing so, an open eye diagram is achieved at 622 Mbit/s for a NRC-LED having an external quantum efficiency of 17%.

Citation Download Citation

Paul L. Heremans, Reiner Windisch, Alexander Knobloch, J. Potemans, Barundeb Dutta, Gottfried H. Doehler, and Gustaaf Borghs "Frequency limits of high-efficiency non-resonant cavity light-emitting diodes", Proc. SPIE 3621, Light-Emitting Diodes: Research, Manufacturing, and Applications III, (14 April 1999); https://doi.org/10.1117/12.344479

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