Photonic-crystal GaN light-emitting diodes with tailored guided modes distribution

2006206 citationsJournal Articlebronze Open Access

Authors

Aurélien David · Laboratoire Charles Fabry

Tetsuo Fujii · University of California, Santa Barbara

Rajat Sharma · University of California, Santa Barbara

Kelly McGroddy · University of California, Santa Barbara

Shuji Nakamura · University of California, Santa Barbara

Steven P. DenBaars · University of California, Santa Barbara

Evelyn L. Hu

Abstract

We relate the currently limited efficiency of photonic crystal (PhC)-assisted gallium nitride light-emitting diodes (LEDs) to the existence of unextracted guided modes. To remedy this, we introduce epitaxial structures which modify the distribution of guided modes. LEDs are fabricated according to this concept, and the tailored band structure is determined experimentally. We investigate theoretically the consequences of this improvement, which significantly enhances the potential for efficient light extraction by PhCs.

Topics & Keywords

GaN-based semiconductor devices and materials Photonic Crystals and Applications Optical Coatings and Gratings

UN Sustainable Development Goals

Clean water and sanitation

Publication Details

Published in: Applied Physics Letters

Volume 88, Issue 6

DOI: 10.1063/1.2171475

Field-Weighted Citation Impact: 17.43