| Issue |
Photoniques
Number 137, 2026
Manufacturing with short pulse lasers
|
|
|---|---|---|
| Page(s) | 24 - 29 | |
| Section | Pioneering experiment | |
| DOI | https://doi.org/10.1051/photon/202613724 | |
| Published online | 13 mai 2026 | |
How electron emission uncovered the last mystery of nitride LEDs
Centre de Recherche sur l’HétéroEpitaxie et ses Applications (CRHEA) ; Université Côte d'Azur, Valbonne-Sophia-Antipolis, France
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Abstract
The remarkable energy efficiency of GaN-based white LEDs has made them the cornerstone of modern lighting. Yet behind this global commercial triumph lay a lingering mystery: why do these LEDs lose efficiency at high currents? That question has finally been answered, thanks to a groundbreaking physics experiment based on electron emission.
© The authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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